hdrhistogram

Note that this release bumps MSRV to 1.88 because it uses a few newer Rust features like use<> and []::as_chunks.

Added

• HdrHistogram::value_at_quantiles and HdrHistogram::value_at_percentiles for faster lookup of multiple quantiles/percentiles (#138).

Changed

• HdrHistogram::value_at_quantile and HdrHistogram::value_at_percentile now use vectorized operations so that they should be significantly faster on larger histograms (#140).
• All usages of unsafe are removed, causing serialization to be slightly slower, but safe.

Changed

• base64 dependency was bumped to 0.21
• clap dependency was bumped to major version 4
• MSRV was bumped to 1.64.0 (due to clap)

Changed

• Fix record iteration when recording only zeros (#125)

Changed

• Optimize Histogram::clone ([#113])
• Optimize Histogram::add when the histogram parameters are equivalent and the target histogram is empty ([#113])

Changed

• Significantly optimized quantile_below (#112)

Added

• Histogram::is_auto_resize (#106)

Changed

• Minimum supported Rust version bumped to 1.48 (due to nom 7)
• nom dependency was bumped to 7.0.0 (#102)

Added

• Implementations of Add and Sub for Histogram<T>.

Changed

• Fixed benchmarks, which didn't compile.

Changed

• Minimum supported Rust version bumped to 1.44 (due to nom 6)
• crossbeam-channel dependency was bumped to 0.5
• nom dependency was bumped to 6.0.1
• base64 dependency was bumped to 0.13

Changed

• Minimal rust version was increased to 1.37.0
• base64 dependency was bumped to 0.12

Added

• std::error:Error implementation for internal Error types: CreationError, AdditionError, SubtractionError, RecordError, UsizeTypeTooSmall, DeserializeError, IntervalLogWriterError, V2DeflateSerializeError, V2SerializeError
• Changelog

Changed

• DeserializeError and V2DeflateSerializeError lost derived traits: PartialEq, Eq, Clone, Copy
• Inner error type from std::io::ErrorKind to std::io::Error in types: DeserializeError, V2DeflateSerializeError, V2SerializeError, IntervalLogWriterError to support Display.