PyPI · #5086 most downloaded on PyPI

tensorboard-plugin-profile

2.23.2598K downloads/moopenxla/xprof ↗New releases in your daily digest, changelog included.

XProf Profiler Plugin

Last release 22 days ago
16 Sep 2026
Ships fairly regularly
a new release about every 4 weeks
Rarely documented
notes for 9 of 47 stable releases
2 versions withdrawn
withdrawn after publishing
7 years old
58 releases · first in 2020

Release timeline

58 releases since 2020

2020202120222023202420252026

20202026

One column per quarter.

Releases

2.23.216 Sept 2026
Enable selection syncing on hover from buffer allocation timeline to other charts. by @copybara-service [bot] in #3102
What's Changed

Enable selection syncing on hover from buffer allocation timeline to other charts. by @copybara-service[bot] in #3102

Highlight overlapping buffer allocation timeline nodes when selecting a program order step. by @copybara-service[bot] in #3118

Add detailed timing metrics for performance tracking in detect_unfused_reshapes_tool by @copybara-service[bot] in #3120

Updates get_top_hlo_ops_tool to fetch and parse protobuf data instead of JSON for "hlo_op_profile.json" tool.. Change xprof_client to support "pb" format. by @copybara-service[bot] in #3119

Added support for displaying baseline values and diffs for key performance indicators in the Performance Summary card of the Overview Page. by @copybara-service[bot] in #3049

The bars are no longer colour coded red/green. by @copybara-service[bot] in #3084

Handle omitted proto3 default values in buffer allocation timeline. by @copybara-service[bot] in #3124

Fix reactivity of diagnostic dismissal and accumulate multiple request errors by @copybara-service[bot] in #3127

The diff between baseline and active is shown through concentric circles in HLO Op Stats now. by @copybara-service[bot] in #3085

[XProf] Loosen conditions for recommendation: Fold reshapes and transposes into compute operations HLO trigger pattern by @copybara-service[bot] in #3048

Add search bar focus keyboard shortcut ('/') to TraceViewer container. by @copybara-service[bot] in #3117

Improve error logging in profile CLI tools by including session IDs. by @copybara-service[bot] in #3139

[ROCm] Make roofline GPU detection vendor-neutral by @clarkechong in #3086

Make XProf pywrap dlopen flags sanitizer-safe by omitting RTLD_DEEPBIND under sanitizer runtimes. by @copybara-service[bot] in #3140

Add Help Menu dialog for Trace Viewer V2. by @copybara-service[bot] in #3141

Set memory viewer component and sidenav container to full height to allow detached vertical placement. by @copybara-service[bot] in #3146

Preserve effective scale and center offsets during canvas resize, to avoid viewport scaling jumps when nodes are being selected/de-selected. by @copybara-service[bot] in #3132

Project import generated by Copybara by @copybara-service[bot] in #3135

Project import generated by Copybara by @copybara-service[bot] in #3133

Project import generated by Copybara by @copybara-service[bot] in #3134

Add missing transitive dependency on protobuf/any.proto by @copybara-service[bot] in #3129

Project import generated by Copybara by @copybara-service[bot] in #3136

Fix exit code capture in run_quiet and reuse requirements.in in setup.py in XProf. by @copybara-service[bot] in #3149

Sort Trace Viewer Event Track to Avoid Key Collision by @copybara-service[bot] in #2836

Add Monaco-based source code editor component by @copybara-service[bot] in #3142

[XProf: Frontend] Fix double-hyphen typos in Material 3 CSS variable definitions and references. by @copybara-service[bot] in #3156

Add unified perf_counters tool to the XProf profiler. by @copybara-service[bot] in #3109

Replace HTML-based source code viewer with Monaco editor by @copybara-service[bot] in #3145

Introduce Framework Op Stats tool to unified workflow by @copybara-service[bot] in #3114

Rollback Replacement of HTML-based source code viewer with Monaco editor by @copybara-service[bot] in #3162

Synchronize process and thread sort indices across protobuf converter and data provider. by @copybara-service[bot] in #3122

Suppress pyrefly errors by @copybara-service[bot] in #3150

Optimize HLO proto traversal and profile lookup in detect_unfused_updates_tool. by @copybara-service[bot] in #3144

Propagate mpmd_pipeline_view parameter across backend collector, converter, and frontend. by @copybara-service[bot] in #3164

Create initial XProf skill by @copybara-service[bot] in #3153

Rollback to fix build errors by @copybara-service[bot] in #3168

Add a screenshot test that scrolls the track list vertically and compares the by @copybara-service[bot] in #3169

Resolve canvas resize crash in Trace Viewer WASM to prepare for Angular 18/Zone.js and be backward compatible with Angular 15. by @copybara-service[bot] in #3158

Upgrade XProf frontend to Angular 18 and aspect_rules_js. by @copybara-service[bot] in #3148

Internal change by @copybara-service[bot] in #3175

[XProf] Minimize unnecessary data type conversions: Implement FP8 dynamic-scale double-upcast detection. by @copybara-service[bot] in #3125

Fix Python import path in llo_report_generator.py. by @copybara-service[bot] in #3176

Preserve primary MPMD tracks and suppress non-MPMD threads in MPMD mode. by @copybara-service[bot] in #3171

UX Improvements to Trace Viewer V2: by @copybara-service[bot] in #3064

Introduces an end-to-end numerical parity verification framework for TPU/accelerator by @copybara-service[bot] in #3174

Add find_hlo tool, unit tests, and evaluation datasets for locating HLO dumps. by @copybara-service[bot] in #3179

Fix hloModule ReferenceError in tf-trace-viewer.html by @copybara-service[bot] in #3185

Fix missing _onViewportChanged function and hloModule reference error by @copybara-service[bot] in #3186

Emit eventhovered from trace_viewer_v2 WASM backend. by @copybara-service[bot] in #3182

Render program order chart when unpadded heap sizes are missing. by @copybara-service[bot] in #3160

Extends the XProf numerical verification framework to support discrete, integer, by @copybara-service[bot] in #3180

Internal change. by @copybara-service[bot] in #3196

Add utilities to aggregate Device FlatOpMetrics into Framework (TF/JAX) Op Metrics. by @copybara-service[bot] in #2870

Bypass ImGui key translation and keyboard capture when Cmd or Ctrl modifier keys are pressed in HandleKeyDown/HandleKeyUp (input_handler.cc). by @copybara-service[bot] in #3198

Harden OpenXLA XProf CLI tools, argument parsing, and diagnostic fallbacks. by @copybara-service[bot] in #3193

Modernize Angular dependency injection and harden test coverage in MainPage. by @copybara-service[bot] in #3205

[ROCm] Fix the Roofline Analysis peak FLOP rate and LDS bandwidth models for AMD GPUs by @clarkechong in #3163

Add Graph Viewer Skill by @copybara-service[bot] in #3154

Add reference skills for xprof CLI tools, workflows, and diagnostics. by @copybara-service[bot] in #3213

Internal Change by @copybara-service[bot] in #3207

Update 3p kernel profiling doc with new default settings. by @copybara-service[bot] in #3214

Bypass WASM keyboard capture in HandleKeyDown/HandleKeyUp (input_handler.cc) when DOM text selection is active (window.getSelection()). by @copybara-service[bot] in #3199

No-op by @copybara-service[bot] in #3212

Harden the OpenXLA XProf CLI profiling suite and caching backend: by @copybara-service[bot] in #3216

Internal Change by @copybara-service[bot] in #3209

Add xprof::ThreadSafeLazy utility to //third_party/xprof/utils. by @copybara-service[bot] in #3217

Add core record conversion logic for FlatOpMetricsDb roofline calculations. by @copybara-service[bot] in #2871

Add trackByProperty to *ngFor loops in the Trace Viewer v2 event details drawer (trace_viewer_container.ng.html). by @copybara-service[bot] in #3191

Fix buildozer compatible_with stripping in xprof/utils BUILD rules for GitHub export. by @copybara-service[bot] in #3222

Introduce check_host_boundness diagnostic tool in TensorBoard Profile Plugin CLI. by @copybara-service[bot] in #3223

Export standardized check_host_boundness and get_kernel_stats tools across CLI and MCP endpoints in TensorBoard Profile Plugin CLI. by @copybara-service[bot] in #3058

Wire ConvertXSpaceToOpStats with use_flat_op_metrics_db and update FlatOpMetricsDb proto schema. by @copybara-service[bot] in #2874

Internal change by @copybara-service[bot] in #3203

Update pinned OpenXLA commit in WORKSPACE.bazel to match d36bdf5550766a16a3444287ac2b975a4fd65d04. by @copybara-service[bot] in #3229

TPU Duty Cycle High Confidence Duty Cycle Backend implementation and combiner aggregation. by @copybara-service[bot] in #3017

Add InputTensors, OutputTensors, and Fingerprint methods to HloInstructionInterface and HloInstructionWrapper. by @copybara-service[bot] in #3218

Fallback to UnifiedProfileProcessorFactory when tools lack legacy ProfileProcessor. by @copybara-service[bot] in #3211

[XProf: trace viewer] Add feature flag for GM3 update by @copybara-service[bot] in #3239

Provide structural fix for Xprof tools routing with graceful legacy fallback. by @copybara-service[bot] in #3228

Introduce Graph Viewer tool to unified workflow by @copybara-service[bot] in #3157

Fix data race in UnifiedUtilizationViewerProcessor by explicitly copying the shared XSpace before executing in-place mutations during preprocessing. by @copybara-service[bot] in #3240

Fix section title capitalization. by @copybara-service[bot] in #3242

Introduce ExecutorFactoryRef and helper factory functions in xprof/convert. by @copybara-service[bot] in #3231

Fix invalid --top_n flag in the xprof get_top_hlo_ops diff-session guide. by @copybara-service[bot] in #3248

Add analyze_step_dispersion tool and references to canonical XProf CLI and skills. by @copybara-service[bot] in #3241

Add Events DB Schema. by @copybara-service[bot] in #3233

Explicitly mark LLO and Custom Call Profiling as experimental and mandate using xprof-nightly in agent skills and documentation. by @copybara-service[bot] in #3245

Refactor Roofline Model generation to use RooflineModelOptions. by @copybara-service[bot] in #3225

[XProf: trace viewer] Fix crash on DPR change and enable HiDPI fonts for OSS. by @copybara-service[bot] in #3220

[XProf: trace viewer] Rollback Fix crash on DPR change and enable HiDPI fonts for OSS. by @copybara-service[bot] in #3251

Fix and enhance the interest range shortcut ('m') behavior: by @copybara-service[bot] in #3247

[XProf: trace viewer] Fix crash on DPR change and enable HiDPI fonts for OSS. by @copybara-service[bot] in #3252

Add Events DB Record and FieldValue data structures by @copybara-service[bot] in #3235

Introduce TimeRangeDiff and switch Animated to affine interpolation to accurately model interval displacements and eliminate spurious "Invalid TimeRange" warnings: by @copybara-service[bot] in #3250

Add Events DB field indices and event utility functions. by @copybara-service[bot] in #3236

Add common and DCN event extraction helpers for Events DB. by @copybara-service[bot] in #3232

Refine the OpenXLA XProf smart suggestions reference documentation for 3P accuracy: by @copybara-service[bot] in #3255

Add custom trace parser for Events DB. by @copybara-service[bot] in #3259

Add host CPU trace parser for Events DB. by @copybara-service[bot] in #3261

Refine the OpenXLA XProf smart suggestions reference documentation to remove 1P vs 3P wording. by @copybara-service[bot] in #3260

Fix get_llo_analysis opcode resolution and multi-module event mapping. by @copybara-service[bot] in #3253

Add GPU device trace parser for Events DB. by @copybara-service[bot] in #3262

Sync MemoryViewer module selection to router and normalize URL query parameters. by @copybara-service[bot] in #3161

Add Events DB parent event tracker utility by @copybara-service[bot] in #3264

Internal Changes by @copybara-service[bot] in #3237

Converts data storage to use a tree-like structure for tracking data organization in the UI. by @copybara-service[bot] in #3201

Internal Changes by @copybara-service[bot] in #3238

Add TPU Component enum. by @copybara-service[bot] in #3266

Internal change by @copybara-service[bot] in #3265

Add TPU device trace parser for Events DB. by @copybara-service[bot] in #3267

Introduce XSpaceParser to orchestrate multi-plane trace parsing into Events DB: by @copybara-service[bot] in #3272

Add a convenience overload for ParseXSpace that automatically groups TensorFlow/XLA events and builds GroupMetadataMap from the provided XSpace. by @copybara-service[bot] in #3273

Standardize XProf CLI error handling and exit codes. by @copybara-service[bot] in #3275

Fix upstream routing, chart rendering, stream lifecycle, and error handling defects. by @copybara-service[bot] in #3274

Fix and simplify get_hlo_stats to pure JSON by @copybara-service[bot] in
Note truncated.

2.23.031 Jul 2026Deprecated

[XProf: trace viewer] Centralize localStorage cleanup of deprecated keys by @lilysjtu2011 in #2676

What's Changed

Update version to 2.23.0 by @Matt-Hurd in #3077
Refactor backend to decouple buffer allocation data from rendering. by @zzzaries in #3087
Reland cl/956308795: make detect_layout_mismatch_copies_tool pure Python. by Profiler Team in #3080
[XProf: trace viewer] Add C++ WASM binding for custom trace colors by @lilysjtu2011 in #3069
Add open-source protobuf storage fields for High Confidence TPU Duty Cycle and Program Goodput. by Profiler Team in #3016
Add labels to timeline view. by @cliveverghese in #3076
UX Improvements to Trace Viewer V2: by Profiler Team in #3025
Add some deduplication info for lite events. by Profiler Team in #2943
Optimize XProf layout mismatch copy detection tool. by @subhamsoni-google in #3075
Show HLO instruction names in peak memory chart tooltips. by @zzzaries in #3072
Introduce standardized kernel stats and step timing tools across 1P and 3P endpoints in TensorBoard Profile Plugin CLI. by Profiler Team in #3059
Enhance core tracing infrastructure, decorators, and top HLO ops utilities in TensorBoard Profile Plugin CLI. by Profiler Team in #3057
Integrated Utilization Viewer with the diff service. by Profiler Team in #2861
Add a new memory_profile tool to xprof. by @Pani122 in #2946
Add UnifiedUtilizationViewerProcessor. by @Pani122 in #2826
Fix request-level analysis for Orbax Serving profiles in XProf. by @youchunni in #2851
[XProf: trace viewer] Add screenshot test and CUJ menu tests for trace viewer by @lilysjtu2011 in #3045
[XProf: trace viewer] Add Preferences GM3 panel and enable_customization feature flag by @lilysjtu2011 in #3051
[XProf] Rework how convert-reduce detection decides whether an f32 upcast is unnecessary. by @xianglan010 in #3063
Add XProf Summit 2026 annoucement & Events Page by @Becker-ZH in #3056
Project import generated by Copybara by Profiler Team in #3047
Add alignTable, a generic utility to align active and baseline session data for all tools. by Profiler Team in #2842
Add a generic diff service that each tool can use to implement its own version of diff by Profiler Team in #2841
[XProf: trace viewer] Add more colors to the Trace Viewer's default palette. by @lilysjtu2011 in #3043
[XProf: trace viewer] Add speed configuration APIs to Trace Viewer v2 WASM by @lilysjtu2011 in #3050
[XProf: trace viewer] Adjust zoom/pan acceleration in Trace Viewer v2 to match v1 ratios by @lilysjtu2011 in #3044
Project import generated by Copybara by Profiler Team in #3046
- Add baseSessionId to 1P and 3P navigation event: by Profiler Team in #2837
Move drawing functionality into a separate helper file to clean timeline.cc by Profiler Team in #3030
Add internal profiler utilities and memory performance definitions. by Profiler Team in #2774
Support extracting custom call cost estimates for JAX Triton kernels. by Profiler Team in #2857
Optimize memory copy mismatch detection performance. by Profiler Team in #2993
Add baseSessionID handling to DataServiceV2: by Profiler Team in #2821
Update custom call profiling with new LLO tracing docs by Profiler Team in #2998
Add support for simultaneous multi-message callout rendering, per-message dismissal, and message accumulation in DiagnosticsView. by Profiler Team in #3034
Refine Memory Analysis UX by Profiler Team in #3032
Maintain ImGui invariants by pushing an empty ImDrawCmd after CmdBuffer.resize(0). This prevents _OnChangedClipRect from reading out-of-bounds memory when it attempts to peek at the last command in the buffer. by Profiler Team in #3031
Prevent hiding the last visible process in Trace Viewer. by Profiler Team in #3012
Add Pin/Unpin functionality to track management. by Profiler Team in #2864
Add a field to store a deterministic, unique op ID. by Profiler Team in #3029
XProf: Document previously undocumented server CLI flags by @subhamsoni-google in #3027
XProf: Fix incorrect CLI shorthand flags in documentation by @subhamsoni-google in #3028
[XProf: trace viewer] Ensure delete button is always visible on tracks by @lilysjtu2011 in #2999
[XProf: trace viewer] Add resizing visual indicator and snap-to-edge support by @lilysjtu2011 in #3001
Add pin UI functions and constants to setup Pin/Unpin functionality. by Profiler Team in #3011
Adding GPU Metrics Support for FlatOpMetricsDb by Profiler Team in #3023
Add FlatOpMetricsDb support to OpStats and StepDetails. by Profiler Team in #2869
Internal change by Profiler Team in #2844
[XProf: trace viewer] Update Timeline Snapping behavior by @lilysjtu2011 in #3000
Project import generated by Copybara by Profiler Team in #3010
Migrate remaining Sass code to the module system by Profiler Team in #3009
Migrate to the Sass module system by @copybara-github in #2957
Establish event selection parity between 1P and 3P Trace Viewer V2. by Profiler Team in #3002
Enable compressed protobuf format in 3P Trace Viewer UI. by Profiler Team in #2995
[XProf: trace viewer] Add fullscreen mode for Trace Viewer by @lilysjtu2011 in #2988
Create graph viewer screenshot test by Profiler Team in #2876
Refactor timeline rendering to include "All" and "Hidden" headers. by Profiler Team in #2856
Create LLO Analysis CLI tools by @Matt-Hurd in #2879
Add guard for default and NO_MODULE HLO modules in Trace Viewer v2. by Profiler Team in #2991
Separate track drawing into separate function to keep code clean, and to prepare for adding the DrawHeaderRow function introduced for the experimental Hide/Pin features. by Profiler Team in #2992
Fix XProf Memory Analysis layout spacing, bar heights, and table text wrapping. by Profiler Team in #2987
Update test nesting level constants, tests and fonts to prepare for refactoring timeline rendering to include "All" and "Hidden" headers. by Profiler Team in #2952
Add "Capture Kernel" button to generate kernel profiling commands. by Profiler Team in #2955
Exact match toggle for string filter component. by Profiler Team in #2958
Add LLO analysis and query tools to xprof_cli. by Profiler Team in #2941
Refactor Timeline search, event handling, and optimize reserve capacity. by Profiler Team in #2948
Fix missing copybara stripping for internal profiling tools in xprof CLI. by @subhamsoni-google in #2986
Internal change by Profiler Team in #2954
Extract fallback logic for framework operation type parsing into utils by @zzzaries in #2893
[XProf] Refactor convert-reduce tracer to iterative DFS to prevent stack overflow. by @xianglan010 in #2953
hlo_proto_to_memory_visualization_utils: Rely on buffer_assignment to compute unpadded sizes and indefinite allocations. by @matthiaskramm in #2488
Enhance frontend search input, navigation handling, and test deduplication. by Profiler Team in #2889
Add Emscripten WASM binding for setting search results by Profiler Team in #2947
Add counter extraction to get counter names from files. by Profiler Team in #2865
Fix Trace Viewer V2 Self Time calculation for selected events by @sannidhyachauhan in #2919
Remove SparseCoreOffloadRule from smart suggestions by @xiongbolu-mineral in #2910
Fix Missing Events in Trace Viewer V2 due to Overlapping Timestamp by @Becker-ZH in #2939
Fix VMEM peak memory allocation in XProf memory viewer by Profiler Team in #2949
Add internal profiler utilities and memory performance definitions. by Profiler Team in #2773
Fix unified tool registrations to execute conditionally and reliably by @Pani122 in #2918
Enhance C++ timeline search navigation and zoom calculations. by Profiler Team in #2895
Project import generated by Copybara by Profiler Team in #2934
Do not mutate const CompilerMetadata protos. by @rickyz in #2940
Update pinned OpenXLA commit in WORKSPACE.bazel to resolve dependency skew. by Profiler Team in #2932
Fix Dear ImGui buffer management in timeline unit tests. by Profiler Team in #2931
Revert: Update CustomCall off-duty logic to check both flops and model_flops. by @Becker-ZH in #2942
Optimizes detect_layout_mismatch_copies_tool to O(N) by precomputing HLO graph connectivity maps. Replaces slow xla_data_pb2 dependency with a hardcoded type dictionary to drastically reduce startup time. by Profiler Team in #2923
Fixes Xprof duty cycle tracking for custom-call collective operations. Custom calls using ICI communication are now correctly categorized as "on-duty" , preventing underestimation of chip utilization. by Profiler Team in #2894
Optimizes detect_layout_mismatch_copies_tool to O(N) by precomputing HLO graph connectivity maps. Replaces slow xla_data_pb2 dependency with a hardcoded type dictionary to drastically reduce startup time. by Profiler Team in #2914
Consolidate unified tool registrations into a single file. by @Pani122 in #2902
Refactor ProfileProcessorTest for readability and idiomatic C++ style by @Pani122 in #2901
Improve visual representation and hover interaction for instant events. by @harsh2201 in #2912
Fix: Trigger redraw after timeline selection. by @harsh2201 in #2913
[XProf] Minimize unnecessary data type conversions: Implement context-aware reduce-centric unnecessary upcast detection. by @xianglan010 in #2831
Adjust styling for trace viewer container and drawer. by Profiler Team in #2706
Internal change by Profiler Team in #2832
Refactor ProfileProcessorTestParam and add missing processors to test suite by @Pani122 in #2886
Roofline Metric Support Using FlatOpMetric DB: Source information helper utilities. by Profiler Team in #2898
Add internal profiler utilities and memory performance definitions. by Profiler Team in #2771
Standardize createToolUrl implementation and support deep linking by Profiler Team in #2899
Add XProf profile plugin support for compressed protobuf traces. by Profiler Team in #2891
No op. 1P specific change to TraceEventLiteContainer. by Profiler Team in #2897
Introduce Unified Memory Viewer. by @Pani122 in #2780
Introduce Base HLO Processor. by @Pani122 in #2867
Optimize trace event ID stability in trace parser by Profiler Team in #2815
Implement Material 3 UI layout, filter chips, and interactive playground for XProf Labs component. by Profiler Team in #2892
[XProf: trace viewer] Add resizing feature for selected time ranges. by @lilysjtu2011 in #2846
Refactor tool_list type annotation in profile_plugin.py to Sequence. by Profiler Team in #2890
[XProf: graph viewer] Fix recursive iframe loading and improve layout robustness by @lilysjtu2011 in #2887
[XProf: graph viewer] Add screenshot tests for layout fix and download button position by @lilysjtu2011 in #2829
Visualize rectangle-selected counter points and improve deselection. by @harsh2201 in #2877
Add ConvertDeviceTraceXPlaneToFlatOpMetricsDb to parse GPU XPlanes natively into FlatOpMetricsDb using XEventsFlatOpMetricsDbBuilder. by Profiler Team in #2840
Implement hiding of process tracks in Trace Viewer v2. by Profiler Team in #2855
Restore autospec and remove noisy comments in profile_io tests. by @subhamsoni-google in #2863
Project import generated by Copybara by @jmr in #2880
Deduplicate event argument and adjacent node network requests in Trace Viewer. by Profiler Team in #2814
Display two decimal for perf counter utilization by @Becker-ZH in #2818
Add track hiding icons to Trace Viewer V2 experimental features. by Profiler Team in #2853
[XProf: trace viewer] Add bookmarking infrastructure and UI markers by @lilysjtu2011 in #2845
Adjust timeline event and selection calculations. by @harsh2201 in #2866
Fix WebAssembly memory leak in wrapper component and optimize string transfers. by Profiler Team in #2753
Fix display issues with long text in category filters in perf counters tool by @sannidhyachauhan in #2652
Add event_stats to CounterEvent and CounterData. by @harsh2201 in #2860
- This CL introduces the detect_layout_mismatch_copies tool, a new automated graph analysis tool for identifying copy operations causing physical layout mismatch, HBM materialization, and TPU lane boundary alignment overhead. by Profiler Team in #2813
Fix GCS bucket path crash caused by mTLS/pyOpenSSL incompatibility. by @subhamsoni-google in #2862
Remove protobuf runtime version checks by @Matt-Hurd in #2854
Validate selective binary loading in builds by @Matt-Hurd in #2479
Add more counter ids for TPU v7x. by Profiler Team in #2858
Make the height at least 1px for 0 values in trace viewer by Profiler Team in #2850
Add enable_continuous_profiling option by @sannidhyachauhan in #2782
Introduce LiteTraceEvents for optimized trace viewer data processing. by Profiler Team in #2852
Introduce UnifiedOverviewPageProcessor for xprof. by @Pani122 in #2683
Support Orbax Serving batch-level analysis in XProf inference profile by @youchunni in #2778
Update XLA Commit to include updates in xplane_schema by @youchunni in #2849
Update CustomCall off-duty logic to check both flops and model_flops. by Profiler Team in #2022
Minor nits in HLO memory analysis backend. by Profiler Team in #2839
Fix GCS exception handling and remove pyOpenSSL dependency in XProf by @subhamsoni-google in #2823
Add internal profiler utilities and memory performance definitions. by Profiler Team in #2768
Fix zero-index search count display formatting in trace viewer container by Profiler Team in #2812
[XProf: trace viewer] Refactor FEATURE_FLAGS to ensure ID uniqueness by @lilysjtu2011 in #2733
[XProf: trace viewer] Fix Op Profile and Graph Viewer sidebar height truncation by @lilysjtu2011 in #2825
'Internal Change' by Profiler Team in #2817
Fix graph viewer scrolling issue by removing height: max-content; from mat-sidenav. This ensures the sidenav respects the container's height and displays a scrollbar when content overflows. by Profiler Team in #2833
Introduce Unified workflow for OpProfile tool. by @Pani122 in #2607
Remove --> from OSS xprof by Profiler Team in

Note truncated.

Open source →

2.22.314 May 2026

[XProf: trace viewer] Move search result count inside search box by @copybara-service [bot] in #2511

What's Changed

[XProf: trace viewer] Move search result count inside search box by @copybara-service[bot] in #2511
[XProf: trace viewer] Fix keyboard navigation for search and controls by @copybara-service[bot] in #2512
[XProf: trace viewer] Add GM3 CSS tokens to global stylesheets by @copybara-service[bot] in #2525
Detect and prevent loops in derived timeline by @copybara-service[bot] in #2518
Add logic to convert trace events to compressed TraceDataResponse. by @copybara-service[bot] in #2437
Add logic to parse Compressed Trace Data Response within the trace viewer WASM layer. by @copybara-service[bot] in #2444
[XProf: trace viewer] Transform search container into full-width capsule by @copybara-service[bot] in #2526
[XProf: trace viewer] Refine search container and tool buttons to GM3 design by @copybara-service[bot] in #2528
[XProf: trace viewer] Update page background and canvas styles by @copybara-service[bot] in #2529
Enable dynamic browser tab titles in XProf. by @copybara-service[bot] in #2519
Move details dropdown icon to the right side. by @copybara-service[bot] in #2537
Redesign details panel in Trace Viewer v2 for richer layout. by @copybara-service[bot] in #2543
Migrate to new string version of send_channel_id and recv_channel_id event args. by @copybara-service[bot] in #2545
[XProf: trace viewer] Improve accessibility in trace viewer by @copybara-service[bot] in #2546
Internal code cleanup and refactoring. by @copybara-service[bot] in #2541
[XProf: trace viewer] Improve keyboard navigation and a11y for trace viewer v2 by @copybara-service[bot] in #2555
Migrate overview page test mock data to constants testing file by @copybara-service[bot] in #2539
Remove extra InitializeProfiler function as it's no longer needed by @copybara-service[bot] in #2507
Use minification-safe property access in trace_viewer utils. by @copybara-service[bot] in #2561
Introduce the UnifiedProfileProcessor interface and factory. by @copybara-service[bot] in #2538
Add screenshot tests for the overview page to catch UI regressions by @copybara-service[bot] in #2540
Put notes on inference profile page about correctness issue with multi-host sessions by @copybara-service[bot] in #2571
[XProf: trace viewer] Always show track even with no events by @copybara-service[bot] in #2573
[XProf: trace viewer] Optimize thread name lookups and ensure all PIDs from named threads are registered. by @copybara-service[bot] in #2575
Fix Trace Viewer reload on profile switch. by @copybara-service[bot] in #2577
Fix missing flow events and categories in 3P Trace Viewer V1 by @copybara-service[bot] in #2583
Fix Invalid Op Name Check in Graph Viewer by @copybara-service[bot] in #2590
Migrate tests to newer test fixtures. by @copybara-service[bot] in #2568
Add Sparse Core ops to HLO Op Stats tool. by @copybara-service[bot] in #2549
Add support for links in Sparse Core Ops. by @copybara-service[bot] in #2550
Surface Operands and Consumers in Trace Viewer 2.0 bottom panel. by @copybara-service[bot] in #2594
[XProf: trace viewer] Add trace_lite.proto by @copybara-service[bot] in #2579
Add details field to TraceDataResponse proto for compressed traces. by @copybara-service[bot] in #2551
Plumb 'details' through TraceViewer.pb and improve Async Event parsing in WASM. by @copybara-service[bot] in #2552
Streamline Trace Viewer V2 loader pipeline and fix potential precision loss on large unique identifiers. by @copybara-service[bot] in #2553
Reformatting for op profile ts files. by @copybara-service[bot] in #2599
Decouple Trace Relations unmarshalling from Boundary Shell for Host Testing by @copybara-service[bot] in #2598
[XProf: trace viewer] Add skeleton for Perfetto proto parser by @copybara-service[bot] in #2582
[XProf: trace viewer] Implement Perfetto trace support in frontend and add tests by @copybara-service[bot] in #2581
[XProf: trace viewer] Implement incremental timestamp tracking in Perfetto parser by @copybara-service[bot] in #2584
[XProf: trace viewer] Add fallback for pid/tid in Perfetto parser by @copybara-service[bot] in #2585
[XProf: trace viewer] Add optional timestamp normalization in Perfetto parser by @copybara-service[bot] in #2586
Fix xla ops naming scheme. by @copybara-service[bot] in #2602
Fix negative start time issues in Trace Viewer 2.0. by @copybara-service[bot] in #2592
Improve trace event details with a two-pane split layout. by @copybara-service[bot] in #2605
[XProf: trace viewer] Do not overwrite visible range with URL params during incremental loads. by @copybara-service[bot] in #2606
Restore Async Events unmarshalling in trace_event_parser_core.cc to fix trace_viewer.pb path by @copybara-service[bot] in #2609
[XProf: trace viewer] Add gzip support for Perfetto trace in frontend by @copybara-service[bot] in #2588
Add source info in HLO op stats for sparse core table. by @copybara-service[bot] in #2595
Added subprocess host traces to trace viewer. by @copybara-service[bot] in #2600
fix: Add pyOpenSSL to dependencies to fix MutualTLSChannelError by @copybara-service[bot] in #2608
Link gcs_file_system into ctypes Profiler C API by @copybara-service[bot] in #2610
Fix keyboard input trap in Xprof Trace viewer 2.0 when navigating via WASM. by @copybara-service[bot] in #2616
[XProf: trace viewer] Fix trace ruler overlap with event names by @copybara-service[bot] in #2613
[XProf: trace viewer] Support counter event multi-selection in wasm by @copybara-service[bot] in #2619
Add screenshot tests for Op Profile. by @copybara-service[bot] in #2587
[XProf: trace viewer] Implement counter event multi-selection by @copybara-service[bot] in #2620
[XProf: trace viewer] Optimize selection logic with binary search by @copybara-service[bot] in #2625
[XProf: trace viewer] Fix BindingError in Application::Initialize by @copybara-service[bot] in #2628
[XProf: trace viewer] Separate counter and complete events into tabs by @copybara-service[bot] in #2622
[XProf: trace viewer] Support instant events by @copybara-service[bot] in #2591
[XProf: trace viewer] Change instant event representation to up arrow by @copybara-service[bot] in #2603
Display a loading spinner in the smart suggestion view while fetching smart suggestions by @copybara-service[bot] in #2621
Update op profile data bandwidth utilization with the dvfs multiplier. by @copybara-service[bot] in #2601
Add additional parameters field for CSV export. by @copybara-service[bot] in #2566
[XProf: trace viewer] Change counter track visualization from lines to bars. by @copybara-service[bot] in #2629
Allow float-formatted numbers for integer options in xprof trace viewer. by @copybara-service[bot] in #2627
[XProf: trace viewer] Add Catapult color palette preset by @copybara-service[bot] in #2630
[XProf: trace viewer] Support contrast-aware text color for readability by @copybara-service[bot] in #2631
[XProf: trace viewer] Apply color palette changes immediately by @copybara-service[bot] in #2632
[XProf: trace viewer] Move search arrows inside search bar and add clear button by @copybara-service[bot] in #2633
Fix error message in megascale viewer when a host is not specified. by @copybara-service[bot] in #2637
Minor format fixes to trace viewer html. by @copybara-service[bot] in #2638
Project import generated by Copybara by @copybara-service[bot] in #2634
Parallelize trace events level assignments. by @copybara-service[bot] in #2532
Optimize Parallel Trace Serialization for LevelDB Writes by @copybara-service[bot] in #2533
[XProf: trace viewer] Refine hover effect and selected time range UI by @copybara-service[bot] in #2640
Util Function for Combination of FlatOpMetricsDb instances. by @copybara-service[bot] in #2641
Expose Pull APIs fetching tokenized PID mappings (Tokens split space delimitations). Ensures Parity Lookups. by @copybara-service[bot] in #2635
Add unit tests for FlatOpMetricsDbCombiner. by @copybara-service[bot] in #2642
Fix missing event arguments when reading traces. by @copybara-service[bot] in #2567
[XProf: trace viewer] Preserve scroll position across incremental updates and clean up unused scroll reset logic by @copybara-service[bot] in #2639
Add graph viewer html for setting up the graph viewer screenshot test. by @copybara-service[bot] in #2548
Project import generated by Copybara by @copybara-service[bot] in #2645
Add changes to use trace compression within 3P backend. by @copybara-service[bot] in #2636
Add Trace Viewer Performance Benchmarks within 3P. by @copybara-service[bot] in #2646
Update README.md by @copybara-service[bot] in #2650
Update xplane_to_flat_op_metrics_db to support converting TensorCore device traces. by @copybara-service[bot] in #2654
Addition of Flat Device Op Metric Db to OpStats by @copybara-service[bot] in #2655
Adding Functionality : ConvertXSpaceToFlatOpMetricsDb by @copybara-service[bot] in #2656
Add public docs for profiling JAX on GPUs with ML Diagnostics by @copybara-service[bot] in #2649
Refactor profile processors for unified 1P/3P architecture. by @copybara-service[bot] in #2542
[XProf: trace viewer] Implement Feature Flag system with Local Storage by @copybara-service[bot] in #2658
Introduce a unified Xprof workflow. by @copybara-service[bot] in #2576
Patch @material/theme/_keys.scss to resolve build issues with duplicate links. by @copybara-service[bot] in #2653
Project import generated by Copybara by @copybara-service[bot] in #2657
Render smart suggestions independently of overview page data loading by @copybara-service[bot] in #2624
Purely formatting change, no functional changes. by @copybara-service[bot] in #2667
[XProf: trace viewer] Add onboarding for Measure mode shortcuts by @copybara-service[bot] in #2668
Bump xprof version to 2.22.3. by @copybara-service[bot] in #2669

Full Changelog: xprof-v2.22.2...xprof-v2.22.3

Open source →

2.22.213 Apr 2026

In this release, we've moved from Python+Platform specific builds to Platform-only specific builds. Now, rather than only supporting Python 3.10-3.13,

In this release, we've moved from Python+Platform specific builds to Platform-only specific builds. Now, rather than only supporting Python 3.10-3.13, we support all Python versions greater than 3.10 and all of their variants (3.14t).

Release Notes

Highlights

Trace Viewer V2 Enhancements: Significant UI/UX improvements, including a new mouse mode toolbar, area selection, static search, and persistent UI states.
Performance Optimizations: Faster trace processing by avoiding unnecessary memory copies, using proto arenas, and optimizing compression levels.
Build & Packaging: Improved multi-Python version build support and resolved various OSS build and macOS compatibility issues.

Detailed Changes

Trace Viewer V2 & Frontend

New Features:
- Implemented Static Search in Trace Viewer V2 with a Material 3 pill-shaped search box.
- Added a Mouse Mode Toolbar, keyboard shortcuts, and zoom interactions.
- Added support for Area Selection and drag-and-drop for JSON files.
- Added a feature to click to copy track names.
- Displayed an area chart for top-level process utilization in the timeline preview.
UI/UX Improvements:
- Updated fonts and styling to Material 3 specifications.
- Added vertical scrolling and automatic track expansion when navigating to an event.
- Made the detail drawer resizable and preserved its size across sessions.
- Preserved group expanded states across trace data updates.
- Improved counter event hover visual effects.
Bug Fixes & Stability:
- Fixed canvas resize flickering.
- Fixed mouse wheel shortcuts and multi-host selection.
- Prevented layout shifts by reserving scrollbar width.
- Stabilized Trace Viewer URL generation.
Internal Refactoring:
- Introduced a scheduler to manage redraws.
- Refactored timeline navigation and drawing logic.
- Renamed Emscripten bindings for better TypeScript readability.

Core Profiler & Backend

Performance Optimizations:
- Sped up trace processing by avoiding unnecessary memory copies of Perfetto output.
- Used Proto Arenas to speed up LoadFromFile and WriteToCord.
- Changed default gzip compression level from 6 to 1 for faster processing.
- Reduced memory allocation during the creation of the prefix trie search index.
- Optimized TraceEvent serialization for LevelDB storage.
Features & Protocol Updates:
- Added TraceDataResponse proto to significantly reduce payload size over the wire.
- Enabled async full DMA feature in 3P Trace Viewer.
- Added counter lines for megascale collective count and in-flight bytes.
Smart Suggestions:
- Optimized EventTimeFractionAnalyzer to process all events at once.
- Added caching and prevented redundant fetches for smart suggestions.
Bug Fixes:
- Fixed SparseCore busy and idle time calculations.
- Synchronized viewport initialized ranges and locked concurrent fetches.

Graph Viewer

Fixed HLO download bug.
Added fallback to find HloProto by node name.
Added an HLO metadata fixer.

Build, Infrastructure & Packaging

Created a custom CustomBdistWheel class to enable multi-Python version builds.
Fixed Kokoro build failures by forcing platlib in setup.py.
Limited macOS linkopts to exclude Linux-exclusive flags.
Included Trace Viewer V2 assets in the pip package and fixed OSS build issues.
Decoupled heavy google-cloud-cpp dependencies.

Documentation & Tests

Added documentation for Custom Call Profiling and CPU Perf Counters support.
Updated the demo trace to a modern MaxText workload.
Added automated load performance benchmarks and various unit tests to improve coverage.

Individual Commits

Fix Kokoro build failure by forcing platlib in setup.py. by Profiler Team in #2513
Synchronize mouse mode changes from keyboard shortcuts to UI. by Profiler Team in #2502
Stabilize Trace Viewer URL generation and remove redundant caches. by Profiler Team in #2492
[XProf: trace viewer] Code cleanup: Refactor timeline_test.cc by grouping and sorting tests by @lilysjtu2011 in #2505
[XProf: trace viewer] Extract GetNextGroupStartLevel helper function. by @lilysjtu2011 in #2510
[XProf: trace viewer] Go to next search result on Enter by @lilysjtu2011 in #2506
[XProf: trace viewer] Expand related tracks when revealing an event by @lilysjtu2011 in #2498
[XProf: trace viewer] Add vertical scrolling when navigating to an event by @lilysjtu2011 in #2497
[XProf: trace viewer] Implement static search in Trace Viewer V2 by @lilysjtu2011 in #2496
Create custom CustomBdistWheel class to enable multi-Python version builds by @Matt-Hurd in #2504
[XProf: trace viewer] Fix canvas resize flickering by @lilysjtu2011 in #2500
[XProf: trace viewer] Refactor timeline navigation to reveal by @lilysjtu2011 in #2494
[XProf: trace viewer] Use stable hash function for event color generation by @lilysjtu2011 in #2499
[XProf: trace viewer] Keep visualization visible when unfolded for process tracks by @lilysjtu2011 in #2487
Add mouse mode toolbar and fix cursor sync in Trace Viewer v2. by Profiler Team in #2484
Add mouse mode shortcuts and zoom interaction to Trace Viewer v2. by Profiler Team in #2474
Limit macos linkopts to exclude linux-exclusive ones. by @Matt-Hurd in #2486
Replace broken sed command with a patch file by @Matt-Hurd in #2475
[XProf: trace viewer] Add automated load performance benchmark by @lilysjtu2011 in #2473
Enable async full DMA feature in 3P Trace Viewer. by Profiler Team in #2459
[XProf: trace viewer] Add JSON drag-and-drop support by @lilysjtu2011 in #2461
Add HLO metadata fixer by @subhamsoni-google in #2468
Implement Details Selector in Trace Viewer v2 UI by Profiler Team in #2460
Implement area selection and migrate click selection to MouseReleased in Trace Viewer. by Profiler Team in #2464
[XProf: trace viewer] Introduce a scheduler to manage redraws in Trace Viewer v2. by @lilysjtu2011 in #2067
Fix SparseCore busy and idle time calculations. by @bmass02 in #2465
Add TraceDataResponse proto definition. This would be used for transferring trace data over the wire significantly reducing the payload size from the current JSON baseline. by Profiler Team in #2436
Support uint32_t, int64_t, and uint64_t types when converting absl::any to emscripten::val for WASM bindings. Also add styling for .single-event-table and .selection-info to make single-event tables more compact. by Profiler Team in #2454
This test verifies that performance counters are successfully collected and can be processed by the xprof plugin when using jax.profiler.trace. The test runs a simple matrix multiplication and addition, then checks for the presence of 'perf_counters' data in the generated xplane file. by Profiler Team in #2453
Optimize TraceEvent serialization for LevelDB storage. by Profiler Team in #2382
Fix HLO Download Bug in Graph Viewer. by @smit-hinsu in #2455
Synchronize viewport initialized ranges and lock concurrent fetches. by Profiler Team in #2451
Enable option to not use cached smart suggestion results in 3P by @RuiyangZhu in #2440
SS Optimization: Make EventTimeFractionAnalyzer to process all events at once by @RuiyangZhu in #2406
Fix Build Error in 3P Xprof Build Script by @RuiyangZhu in #2439
[XProf: trace viewer] Merge Timeline Level Y Positions into precalculated relative offsets by @lilysjtu2011 in #2435
[XProf: trace viewer] Cleanup ImGui Table Flags and Extract Pixel Constants by @lilysjtu2011 in #2434
[XProf: trace viewer] Make trace viewer v2 search box a GM3 pill shape by @lilysjtu2011 in #2432
[XProf: trace viewer] Refactor Timeline logic by @lilysjtu2011 in #2433
[XProf: trace viewer] Display an area chart for the top-level process utilization in the timeline preview. by @lilysjtu2011 in #2431
[XProf: trace viewer] Improve counter event hover visual effect by @lilysjtu2011 in #2430
Resolve rest of formatting and lint warnings in ts files. by @zzzaries in #2425
[XProf: trace viewer] Add click to copy track name feature by @lilysjtu2011 in #2429
[XProf: trace viewer] Format Process Track Name in Two Lines by @lilysjtu2011 in #2428
[XProf: trace viewer] Update Trace Viewer fonts to Material 3 specifications by @lilysjtu2011 in #2427
[XProf: trace viewer] UI styling and track alignment improvements. by @lilysjtu2011 in #2426
Add docs for upcoming cpu perf counters support by @Matt-Hurd in #2419
Add fallback to find HloProto by node name in Graph Viewer. by @subhamsoni-google in #2391
[XProf: trace viewer] Separate drawing logic for ruler and vertical lines by @lilysjtu2011 in #2421
Create EventFractionAnalyzerResults Proto by @RuiyangZhu in #2387
[XProf: trace viewer] Add secondary container color and fix process track color collision by @lilysjtu2011 in #2420
[XProf: trace viewer] Add aggregated event preview for collapsed groups. by @lilysjtu2011 in #2395
[XProf: trace viewer] Rename Emscripten bindings for TypeScript readability. by @lilysjtu2011 in #2388
Add an option to not use cached smart suggestion results in 1P by @RuiyangZhu in #2394
Project import generated by Copybara by Profiler Team in #2418
Don't show legacy DCN view in Trace Viewer by default. Users should use the new by @bbadawi1 in #2404
[XProf: trace viewer] Fix mouse wheel shortcuts and add input handler tests. by @lilysjtu2011 in #2414
Change gzip compression level from 6 (default) to 1. by @bbadawi1 in #2412
Apply code formatting to TypeScript files. by @zzzaries in #2415
Speed up trace processing by avoiding unnecessary memory copy of perfetto output. by @bbadawi1 in #2410
Switch EventForest to use new XPlaneVisitor factory. by @bmass02 in #2401
Use SmartSuggestionProcessor in ConvertMultiXSpacesToSmartSuggestion in xplane_to_tools_data by @xiongbolu-mineral in #2372
Use proto arenas to speed up LoadFromFile and WriteToCord. by @bbadawi1 in #2409
Add documentation for Custom Call Profiling in XProf. by @cliveverghese in #2408
Update demo trace to modern MaxText workload. by @Matt-Hurd in #2407
[XProf: trace viewer] Add tests to improve test coverage and fix regressions. by @lilysjtu2011 in #2402
Fix multi-host selection in trace viewer by @muditgokhale2 in #2403
Use channel_id instead of rendezvous for connecting megascale events. by @bbadawi1 in #2392
Refractor AddHloProto to get module_id from module by @cliveverghese in #2304
Switch EventForest to use new XPlaneVisitor factory. by @muditgokhale2 in #2384
Add counter lines for megascale collective count and in-flight bytes. by @bbadawi1 in #2381
Use public targets from google_cloud_cpp by @ethanluoyc in #2376
Add default constructors to hlo_proto_map by @cliveverghese in #2349
[XProf: trace viewer] Making one-line threads not collapsible. by @lilysjtu2011 in #2370
[XProf: trace viewer] Preserve group expanded states across trace data updates. by @lilysjtu2011 in #2367
Only render the timeline graph if the allocation timeline is not empty. by @muditgokhale2 in #2378
Reduce memory allocation while creation of prefix trie trace events search index. by Profiler Team in #2379
Switch EventForest to use new XPlaneVisitor factory. by @bmass02 in #2371
Register BarrierCoresRule for 3P XProf by @xiongbolu-mineral in #2353
Update xprof WORKSPACE.BAZEL with patch commands for emsdk by Profiler Team in #2374
Cache smart suggestion result for 3P XProf by @RuiyangZhu in #2366
Fix missing overview page contents after smart suggestion request by @xiongbolu-mineral in #2359
Remove unused function ConvertMultiXSpacesToTfDataBottleneckAnalysis from xplane_to_tools_data by @xiongbolu-mineral in #2365
Include trace viewer v2 assets in the pip package, and fix OSS build issues by Profiler Team in #2351
[XProf: trace viewer] Make the trace viewer drawer size persistent. by @lilysjtu2011 in #2343
[XProf: trace viewer] Reserve scrollbar width to avoid layout shift. by @lilysjtu2011 in #2356
Refactor: Convert recursive event tree traversal to iterative by Profiler Team in #2360
Refactor: Abstract smart suggestion check in DataServiceV2 by @xiongbolu-mineral in #2354
Don't populate disaggregated serving latency for irrelevant sessions by Profiler Team in #2358
Prevent redundant smart suggestion fetches for the same session. by @xiongbolu-mineral in #2352
Decouple third_party/xprof/convert:repository from heavy google-cloud-cpp dependencies. by Profiler Team in #2344
Register 3P specific rules in smart suggestion processor and disable it from profile processor framework by @xiongbolu-mineral in #2348
When a module already has a run_id, use it instead of creating a new one. by @bbadawi1 in #2350
[XProf: trace viewer] Add angular-split to make the detail drawer resizable. by @lilysjtu2011 in #2341
Update XProf documentation and README. by Profiler Team in #2346
Fix documentation typo in OpMetrics proto by @charlesalaras in #2347

Full Changelog: xprof-v2.22.0...xprof-v2.22.2

Open source →

2.22.02 Mar 2026

Update XProf version to 2.22.0 by @subhamsoni-google in #2345

What's Changed

Update XProf version to 2.22.0 by @subhamsoni-google in #2345
Implement the Trace Viewer V2 by Profiler Team in #2279
Add unit tests to megascale_perfetto directory. by @bbadawi1 in #2340
[XProf: trace viewer] Update consstants by Profiler Team in #2338
[XProf: trace viewer] Integrate ruler into the timeline table. by Profiler Team in #2331
Defer smart suggestions view rendering in overview page by @xiongbolu-mineral in #2326
Preserve session_path and run_path query parameters in Trace Viewer links. by Profiler Team in #2337
Add support for reading XSpace protos from Google Cloud Storage in xprof. by Profiler Team in #2325
Disables the smart suggestions feature in the XProf frontend. by Profiler Team in #2336
Add timing logs to TraceViewerProcessors. by @subhamsoni-google in #2335
Combine program ID map and source stats in OpStats, and generate HLO protos from XPlanes if needed. by @Pani122 in #2334
Refactor: Add detailed logging for XProf by @subhamsoni-google in #2333
Update Copybara configurations to support Google Cloud C++ and JSON third-party mappings, and add corresponding external dependencies to the OSS Bazel WORKSPACE. Add transform rules for TSL and Storage Client include paths. by Profiler Team in #2321
Optimize step alignment computation. by @subhamsoni-google in #2322
[XProf: trace viewer] Always show delete button for selected time ranges by Profiler Team in #2317
Create Input Bound Rule for Smart Suggestion to Cover High Infeed Op Ratio by Profiler Team in #2308
Fix timeline link in memory viewer by @muditgokhale2 in #2328
Extract file I/O operations into profile_io.py by Profiler Team in #2323
Display disaggregated serving avg decoding step time on TPU in the XProf overview page by Profiler Team in #2195
Skip redundant xspace preprocessing in streaming trace viewer by @muditgokhale2 in #2306
[Code cleanup] Reformat timeline.cc and timeline_test.cc. by Profiler Team in #2318
Improve handling of DMA events and clean up the code. by @bbadawi1 in #2311
Refactor: Optimize StepIntersection by pre-calculating step timespans by @subhamsoni-google in #2284
Add a Jax Profiler Test by @Becker-ZH in #2298
Register separate smart suggestion rules for 3P by Profiler Team in #2297
Add mandatory device and resource regexes to TraceFilterConfig by Profiler Team in #2300
Fix HLO Stats UI misalignment by @muditgokhale2 in #2305
Fix CSV export filename to be human-readable in XProf by @muditgokhale2 in #2294
Fix metadata collection issue for HLO. by @cliveverghese in #2303
Fix redundant double data requests on page reload in hlo_stats, input_pipeline, memory_profile, op_profile and roofline_model by @muditgokhale2 in #2261
Remove duplicate description push in performance summary. by @bmass02 in #2296
Fix XStat retrieval issues in DutyCycle calculations that resulted in off-duty ops being considered on-duty. by @bmass02 in #2295
Refactor: Improve error propagation for ConvertXSpaceToOpStats by @subhamsoni-google in #2283
Fix SVG export in XProf Graph Viewer by removing invalid .outerHTML access. by @muditgokhale2 in #2293
Implement graph viewer crosslinks in the Trace Viewer V2 by Profiler Team in #2278
Support Helical MPMD Pipelining in Trace Viewer. by Profiler Team in #2201

Full Changelog: xprof-v2.21.6...xprof-v2.22.0

Open source →

2.21.69 Feb 2026

Add view_start/end to shareable Trace Viewer V2 deeplink, allowing for sharing viewport by Profiler Team in #2257

What's Changed

Add view_start/end to shareable Trace Viewer V2 deeplink, allowing for sharing viewport by Profiler Team in #2257
Add unit tests and refactor trace_events_to_json to use absl::btree_map. by Profiler Team in #2246
Preserve session parameters in Memory Viewer timeline URL. by Profiler Team in #2236
Remove trace_viewer_container files from copybara excludes. by Profiler Team in #2269
Make Emscripten/WASM build support compatible with the trace viewer v2 by Profiler Team in #2256
Add group preview drawing and separators in Timeline. by Profiler Team in #2264
Preserve session parameters in Graph Viewer and Overview Page URLs. by Profiler Team in #2238
Ensure session and run parameters are preserved across tool navigations and link generation. by Profiler Team in #2233
Fix redundant double data requests on page reload in Overview Page by @muditgokhale2 in #2260
Refactor ProfileWorkerServiceImpl and improve logging. by @subhamsoni-google in #2244
Project import generated by Copybara by @h-joo in #2254
[XProf: trace viewer] Add collapse/expand feature to timeline groups. by Profiler Team in #2251
Add Emscripten/WASM build support for open-source xprof. by Profiler Team in #2253
Create docs for Utilization Viewer and Perf Counters tools by @Matt-Hurd in #2248
Reset tool context on navigation. by Profiler Team in #2235
Re-enable counter events visibility criteria per zoom level. by Profiler Team in #2234
Fix multi-host selection persistence in Trace Viewer shared URLs by @muditgokhale2 in #2247
Implement EventTimeFractionAnalyzerProcessor for Suggestion processing by Profiler Team in #2242
Add ArrayRecord to Tf.Data's file read categorization. by @bmass02 in #2232
Stop showing recv-done stats and debug tracks at start-up in megascale perfetto. by @bbadawi1 in #2241
Implement deep search in trace_viewer v2 UI by Profiler Team in #2218
Patch the modified Z-Score straggler detection with Minimum Variance Threshold by Profiler Team in #2220
Fix potential null dereference. by @cliveverghese in #2230
Add utilization viewer by @cliveverghese in #2229
Add convert to utilization viewer function from xplane by @cliveverghese in #2228
Add tpuv7 Utilization Viewer logic by @cliveverghese in #2225
UI plumbing to add a new button to hlo op profile for viewing reg utilization by Profiler Team in #2108
Add "Perf Counters" tool to xprof. by @zzzaries in #2219
Add TPU v7 counter IDs to xprof. by @cliveverghese in #2217
Update XLA dependency in xprof WORKSPACE.bazel to include xplane_schema changes for perf counter stat. by @zzzaries in #2221
Implement GetMemoryProfile in ToolDataProviderImpl for smart suggestion by Profiler Team in #2208
Use the new RBE pool in ml-oss-rbe-general for Windows RBE builds by @nitins17 in #2215
Add log to time the xplane_to_tools_data_with_profile_processor method by @muditgokhale2 in #2216
[XProf: trace viewer] Refactor magic numbers in timeline/. by Profiler Team in #2210
Add event search bar to Trace Viewer v2 by Profiler Team in #2026
Add Tpu Counter Utility class by @cliveverghese in #2200
Update benchy test to include larger xplanes by @muditgokhale2 in #2213

Full Changelog: xprof-v2.21.5...xprof-v2.21.6

Open source →

2.21.528 Jan 2026

Update XProf version to 2.21.5 by @subhamsoni-google in #2212

What's Changed

Update XProf version to 2.21.5 by @subhamsoni-google in #2212
Use xspace from CNS for the benchy test by @muditgokhale2 in #2209
Change flow line colors to be based on flow category in Trace Viewer 2.0 by Profiler Team in #2160
Refactor ProfileProcessor-based tool data conversion by Profiler Team in #2199
Make Megascale Perfetto tool available in OSS xprof. by Profiler Team in #2177
This change introduces multi-selection for flow event categories in Trace Viewer v2, replacing the single-select dropdown with a multi-select menu. Users can now toggle visibility for multiple flow categories at once. Flow event lines are now colored based on their category for easier identification. by Profiler Team in #2197
[XProf: trace viewer] Replace polling CanvasState::Update with ResizeObserver. by Profiler Team in #2190
Implement GetEventTimeFractionAnalyzerResult() in tool_data_provider_impl.h for smart suggestion by Profiler Team in #2187
Implement cross link functionality with roofline model and stack trace. by Profiler Team in #2014
Add Tpu Performance Counters for SparseCore and HBM by @cliveverghese in #2192
[XProf: trace viewer] Clean up Emscripten related code. by Profiler Team in #2193
[XProf: trace viewer] Support canceling selection with Escape key. by Profiler Team in #2191
[XProf: trace viewer] Defer data fetching until active interactions (keyboard/mouse) is done. by Profiler Team in #2189
[XProf: trace viewer] Improve trackpad scrolling and add Shift-key modifier. by Profiler Team in #2188
[DOCS] Update docker build command by @copybara-github in #2081
Initial proto for Disaggregared Serving Latency by Profiler Team in #2183
Refactor ProfilePlugin to support dependency injection. by @subhamsoni-google in #2170
Remove the disable wrong arg types linter exception by @muditgokhale2 in #2186
Remove Python 3.9 support from xprof. by @subhamsoni-google in #2181
Fix text overlap issues in memory_viewer tool by @muditgokhale2 in #2185
Fix graph viewer loading issue while retain trace viewer loading efficiency with multi-host session. by @zzzaries in #2178
[Code cleanup] Reorder function definitions in timeline.cc. by Profiler Team in #2180
[XProf: trace viewer] Switch to Google Sans Code font. by Profiler Team in #2179
Retrieve and display extra event data by Profiler Team in #2012
Add build configs for linux aarch64 by @Matt-Hurd in #2175
Implement GetOpStats() in tool_data_provider_impl.h for smart suggestion by Profiler Team in #2172
[XProf: trace viewer] Implement Zoom-to-Cursor in v2 by Profiler Team in #2174
[XProf: trace viewer] Refine fetch resolution and suppression logic. by Profiler Team in #2168
[XProf: trace viewer] Optimize MaybeRequestData with early exit and zoom fix. by Profiler Team in #2167
[XProf: trace viewer] Add tolerance to TimeRange::Contains to handle floating point inaccuracies. by Profiler Team in #2161
Fix the version route API by @muditgokhale2 in #2173
prioritize the legacy source info now for correctness. by @zzzaries in #2131
Add SparseCore offload rule to Smart Suggestion. by Profiler Team in #2124
Add flow category filtering UI to Trace Viewer v2. by Profiler Team in #2147
Avoid repetitive onPlot call in Graph Viewer. by @zzzaries in #2148
Improve Graph Viewer functionality with graph type change - should be no-op now as hlo graph is the only graph type. by @zzzaries in #2138
Added timing logs while saving leveldb files. by Profiler Team in #2149
[XProf: trace viewer] Change selected time range text color to black. by Profiler Team in #2146
Refactor SourceCodeService.isAvailable to return an Observable to rely on profiler configuration. by @zzzaries in #2137
Enable circular buffer tracing for TPU by @sannidhyachauhan in #2105
Add flow event visualization to Trace Viewer v2. by Profiler Team in #2083

Full Changelog: xprof-v2.21.4...xprof-v2.21.5

Open source →

2.21.415 Jan 2026Deprecated

Deprecate usage of op.metadata.source_file and source_line according to xla changes. by @zzzaries in #2024

What's Changed

Update xprof version to 2.21.4 by @subhamsoni-google in #2143
Wrap diagnostic messages in unordered lists and add styling for scrollable lists. by @zzzaries in #2144
Update openxla/xla dependency version. by @subhamsoni-google in #2142
Project import generated by Copybara by Profiler Team in #2140
Add terminology page by @copybara-github in #2080
Add GetMemoryProfile to smart suggestion ToolDataProvider interface. by Profiler Team in #2129
[DOCS] Overview page by @copybara-github in #2077
Enhance HloModuleUtilsTest to cover multi-level stack frames. by @zzzaries in #2125
Update EntrySelectedEventDetail to use microsecond-based formatted strings, and remove unnecessary start/end time event detail data by Profiler Team in #2118
Add Python binding for continuous profiling and snapshot. by @sannidhyachauhan in #2049
Default to showing all hosts when enabling MPMD Pipeline View. by Profiler Team in #2106
Revert trace viewer param changes by @muditgokhale2 in #2127
Update k8s and Docker deployment by @copybara-github in #2086
Allow loading HLO protos by program ID in addition to module name. by @zzzaries in #2084
Skip intersecting empty step event sets. by @bmass02 in #2090
Add Capturing Profiles and individual library guides by @copybara-github in #2052
Enhance Trace Viewer v2 drawer to display event start time and duration. by Profiler Team in #2011
[XProf: trace viewer] Add loading status updates to Trace Viewer V2 incremental loading. by Profiler Team in #2111
[XProf: trace viewer] Preserve the visible time range by Profiler Team in #2110
[XProf: trace viewer] Allow setting the initial visible time range from URL parameters. by Profiler Team in #2107
[XProf: trace viewer] Add event listener to handle data re-fetching in Trace Viewer V2. by Profiler Team in #2089
[XProf: trace viewer] Rename data_time_range_ to fetched_data_time_range_. by Profiler Team in #2092
[XProf: trace viewer] Adjust horizontal separator line start position in Trace Viewer. by Profiler Team in #2113
[XProf: trace viewer] Update mouse cursor for delete button in selected time range by Profiler Team in #2095
[XProf: trace viewer] Add a close button to selected time ranges in the timeline. by Profiler Team in #2094
Add MPMD Pipeline View toggle and process sorting in Trace Viewer V2. by Profiler Team in #2071
Propagate session_path and run_path in DataServiceV2 to all API calls by Profiler Team in #2078
The BufferDetails component now uses the injected DataServiceV2Interface to generate the graph viewer link. Tests are updated to provide a mock for DATA_SERVICE_INTERFACE_TOKEN. by Profiler Team in #2103
Add unit tests for stub_factory. by @subhamsoni-google in #2100
Add multi-threading to trace viewer Reduce by @muditgokhale2 in #2096
Cost Accumulation Updates For Custom Call by Profiler Team in #2097
Fix negative resolution calculation in tf-trace-viewer when clientWidth is 0 by @subhamsoni-google in #2087
Removes the ImGui-based loading indicator within the WASM module by Profiler Team in #2037
Add OpProfile data fetching to smart suggestion ToolDataProvider interface. by Profiler Team in #2065
Add support in trace_viewer to leverage the aggregator-worker setup by @muditgokhale2 in #1963
[XProf: trace viewer] Add resolution parameter to trace viewer data requests. by Profiler Team in #2082
Add warning tooltip to common for use across modules. by Profiler Team in #2074
Implement Straggler detection in barrier-cores rule using Modified Z-Score method. by Profiler Team in #2054
Disable MPMD pipeline view button by Profiler Team in #2072
Standardize import guards, visibility, imports by @Matt-Hurd in #1980
reproduce bug which introduces syntax not present in 3.9 by @subhamsoni-google in #2062
Include per-host event fraction for each step in EventTimeFractionAnalyzer proto. by Profiler Team in #2042
Remove window.open and use windowOpen directly by @zzzaries in #1967
Allow selecting host in Megascale Perfetto tool. by Profiler Team in #2036
Add hover tooltip and marker to counter tracks. by Profiler Team in #2043
Updates to the run environment data processing in op stats. No-op for now. by @zzzaries in #2050
Add support for Counter event in Trace Viewer v2. (2/2) by Profiler Team in #2041
Add support for Counter events in Trace Viewer v2. (1/2) by Profiler Team in #2040
Add a benchy benchmark for the ConvertXSpaceToOpStats function by @muditgokhale2 in #2030
Integrate SparseCore offloading metadata into grouping logic to accurately group SparseCore execution with TensorCore. by @bmass02 in #1981
Project import generated by Copybara by @cliveverghese in #2038
Added unit test for the type change of OpSourceInfo::source_file from string_view to std::string which was done to avoid dangling references potentially avoiding use-after-free crashes. by Profiler Team in #2029
Add scrollbar in the trace viewer timeline tracks. by Profiler Team in #2032
Use XLA's ComputeTotalAllocationBytes in xprof. by @zacmustin in #2009
Remove unnecessary log statement. by @subhamsoni-google in #2028
Deprecate usage of op.metadata.source_file and source_line according to xla changes. by @zzzaries in #2024
Move smart suggestion thresholds used by rules to constants.h. by Profiler Team in #1999
Implemented SS data shuffle bound rule that checks the average time percentage spent on collective operators. by Profiler Team in #1990
Hide capture button from empty page for fully managed by @muditgokhale2 in #1996
Refine the logic for selecting off-screen time range drawing. by Profiler Team in #2007
Move selected time range drawing to be under 'tooltip' by Profiler Team in #1987
Add re2 dependency to WORKSPACE.bazel and update xprof copy.bara.sky to handle re2 for OSS builds. by Profiler Team in #2005
Deprecate usage of op.metadata.source_file and source_line according to xla changes. by @zzzaries in #1992
Fix unused and missing include in barrier_cores_rule by Profiler Team in #1991
Update openxla/xla dependency in WORKSPACE.bazel. by @subhamsoni-google in #1995
Use tsl::Stat to calculate average event time fraction. by Profiler Team in #1988
Implemented SS collective bound rule that checks the average time percentage spent on collective operators. by Profiler Team in #1985
Add the time measurement feature (1/4) by Profiler Team in #1968

Full Changelog: xprof-v2.21.3...xprof-v2.21.4

Open source →