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# v1.9.0
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## Features
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- The new `--parameter-list <VAR> <VALUES>` option can be used to run
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a parametrized benchmark on a user-specified list of values.
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This is similar to `--parameter-scan <VAR> <MIN> <MAX>`, but doesn't
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necessarily required numeric arguments.
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``` bash
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hyperfine --parameter-list compiler "gcc,clang" \
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"{compiler} -O2 main.cpp"
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```
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See: #227, #234 (@JuanPotato)
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- Added `none` as a possible choice for the `--style` option to
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run `hyperfine` without any output, see #193 (@knidarkness)
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- Added a few new scripts for plotting various types of benchmark
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results (https://github.com/sharkdp/hyperfine/tree/master/scripts)
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## Changes
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- The `--prepare` command is now also run during the warmup
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phase, see #182 (@sseemayer)
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- Better estimation of the remaining benchmark time due to an update
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of the `indicatif` crate.
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## Other
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- `hyperfine` is now available on NixOS, see #240 (@tuxinaut)
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# v1.8.0
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## Features
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- The `--prepare <CMD>` option can now be specified multiple times to
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run specific preparation commands for each of the benchmarked programs:
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``` bash
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hyperfine --prepare "make clean; git checkout master" "make" \
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--prepare "make clean; git checkout feature" "make"
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```
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See: #216, #218 (@iamsauravsharma)
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- Added a new [`welch_ttest.py`](https://github.com/sharkdp/hyperfine/blob/master/scripts/welch_ttest.py) script to test whether or not the two benchmark
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results are the same, see #222 (@uetchy)
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- The Markdown export has been improved. The relative speed is now exported
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with a higher precision (see #208) and includes the standard deviation
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(see #225).
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## Other
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- Improved documentation for [`scripts`](https://github.com/sharkdp/hyperfine/tree/master/scripts) folder (@matthieusb)
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# v1.7.0
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## Features
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- Added a new `-D`,`--parameter-step-size` option that can be used to control
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the step size for `--parameter-scan` benchmarks. In addition, decimal numbers
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are now allowed for parameter scans. For example, the following command runs
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`sleep 0.3`, `sleep 0.5` and `sleep 0.7`:
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``` bash
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hyperfine --parameter-scan delay 0.3 0.7 -D 0.2 'sleep {delay}'
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```
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For more details, see #184 (@piyushrungta25)
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## Other
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- hyperfine is now in the official Alpine repositories, see #177 (@maxice8, @5paceToast)
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- hyperfine is now in the official Fedora repositories, see #196 (@ignatenkobrain)
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- hyperfine is now in the official Arch Linux repositories
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- hyperfine can be installed on FreeBSD, see #204 (@0mp)
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- Enabled LTO for slightly smaller binary sizes, see #179 (@Calinou)
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- Various small improvements all over the code base, see #194 (@phimuemue)
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# v1.6.0
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## Features
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- Added a `-c, --cleanup <CMD>` option to execute `CMD` after the completion of all benchmarking runs for a given command. This is useful if the commands to be benchmarked produce artifacts that need to be cleaned up. See #91 (@RalfJung and @colinwahl)
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- Add parameter values (for `--parameter-scan` benchmarks) to exported CSV and JSON files. See #131 (@bbannier)
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- Added AsciiDoc export option, see #137 (@5paceToast)
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- The relative speed is now part of the Markdown export, see #127 (@mathiasrw and @sharkdp).
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- The *median* run time is now exported via CSV and JSON, see #171 (@hosewiejacke and @sharkdp).
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## Other
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- Hyperfine has been updated to Rust 2018 (@AnderEnder). The minimum supported Rust version is now 1.31.
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# v1.5.0
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## Features
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- Show the number of runs in `hyperfine`s output (@tcmal)
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- Added two Python scripts to post-process exported benchmark results (see [`scripts/`](https://github.com/sharkdp/hyperfine/tree/master/scripts) folder)
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## Other
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- Refined `--help` text for the `--export-*` flags (@psteinb)
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- Added Snapcraft file (@popey)
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- Small improvements in the progress bar "experience".
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# v1.4.0
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## Features
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- Added `-S`/`--shell` option to override the default shell, see #61 (@mqudsi and @jasonpeacock)
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- Added `-u`/`--time-unit` option to change the unit of time (`second` or `millisecond`), see #80 (@jasonpeacock)
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- Markdown export auto-selects time unit, see #71 (@jasonpeacock)
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# v1.3.0
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## Feature
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- Compute and print standard deviation of the speed ratio, see #83 (@Shnatsel)
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- More compact output format, see #70 (@jasonpeacock)
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- Added `--style=color`, see #70 (@jasonpeacock)
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- Added options to specify the max/exact numbers of runs, see #77 (@orium)
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## Bugfixes
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- Change Windows `cmd` interpreter to `cmd.exe` to prevent accidentally calling other programs, see #74 (@tathanhdinh)
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## Other
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- Binary releases for Windows are now available, see #87
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# v1.2.0
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- Support parameters in preparation commands, see #68 (@siiptuo)
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- Updated dependencies, see #69. The minimum required Rust version is now 1.24.
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# v1.1.0
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* Added `--show-output` option (@chrisduerr and @sevagh)
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* Refactoring work (@stevepentland)
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# v1.0.0
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## Features
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* Support for various export-formats like CSV, JSON and Markdown - see #38, #44, #49, #42 (@stevepentland)
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* Summary output that compares the different benchmarks, see #6 (@stevepentland)
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* Parameterized benchmarks via `-P`, `--parameter-scan <VAR> <MIN> <MAX>`, see #19
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## Thanks
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I'd like to say a big THANK YOU to @stevepentland for implementing new features,
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for reviewing pull requests and for giving very valuable feedback.
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# v0.5.0
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* Proper Windows support (@stevepentland)
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* Added `--style auto/basic/nocolor/full` option (@stevepentland)
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* Correctly estimate the full execution time, see #27 (@rleungx)
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* Added Void Linux install instructions (@wpbirney)
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# v0.4.0
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- New `--style` option to disable output coloring and interactive CLI features, see #24 (@stevepentland)
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- Statistical outlier detection, see #23 #18
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# v0.3.0
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## Features
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- In addition to 'real' (wall clock) time, Hyperfine can now also measure 'user' and 'system' time (see #5).
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- Added `--prepare` option that can be used to clear up disk caches before timing runs, for example (see #8).
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## Other
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- [Arch Linux package](https://aur.archlinux.org/packages/hyperfine) for Hyperfine (@jD91mZM2).
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- Ubuntu/Debian packages are now are available.
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# v0.2.0
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Initial public release
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