A fast and combinable Rust logging crate, inspired by the C++ logging library [spdlog].
The documentation of this crate is hosted on [docs.rs], and you can find examples under [./examples] directory.
If you have any questions or need help while using this crate, feel free to [open a discussion]. For feature requests or bug reports, please [open an issue].
Run cargo +nightly bench in the root directory of this repository for benchmarking.
The following results are generated with Windows 10 64 bit and Intel i9-10900KF CPU @ 3.70GHz.
Disclaimer, I'm not entirely familiar with using the other Rust crates below, so if you find a bug or something worth improving in the benchmark code, feel free to open an issue to let me know.
spdlog-rs (0.1.0)Default features (corresponds to C++ spdlog using standard <format>)
[info] **********************************************************************
[info] Multi threaded: 1 threads, 250000 messages
[info] **********************************************************************
[info] basic_mt Elapsed: 0.13 secs 1940870/sec
[info] rotating_mt Elapsed: 0.13 secs 1894612/sec
[info] daily_mt Elapsed: 0.13 secs 1920024/sec
[info] level-off Elapsed: 0.00 secs 444919024/sec
[info] **********************************************************************
[info] Multi threaded: 4 threads, 250000 messages
[info] **********************************************************************
[info] basic_mt Elapsed: 0.14 secs 1825379/sec
[info] rotating_mt Elapsed: 0.14 secs 1845651/sec
[info] daily_mt Elapsed: 0.13 secs 1854885/sec
[info] level-off Elapsed: 0.00 secs 485625485/sec
test bench_file ... bench: 376 ns/iter (+/- 12)
test bench_level_off ... bench: 1 ns/iter (+/- 0)
test bench_rotating_daily ... bench: 380 ns/iter (+/- 12)
test bench_rotating_file_size ... bench: 379 ns/iter (+/- 50)
Enable flexible-string feature (corresponds to C++ spdlog using fmt library)
[info] **********************************************************************
[info] Multi threaded: 1 threads, 250000 messages
[info] **********************************************************************
[info] basic_mt Elapsed: 0.08 secs 3003511/sec
[info] rotating_mt Elapsed: 0.08 secs 3006090/sec
[info] daily_mt Elapsed: 0.08 secs 3032813/sec
[info] level-off Elapsed: 0.00 secs 484871993/sec
[info] **********************************************************************
[info] Multi threaded: 4 threads, 250000 messages
[info] **********************************************************************
[info] basic_mt Elapsed: 0.06 secs 4266393/sec
[info] rotating_mt Elapsed: 0.06 secs 4271496/sec
[info] daily_mt Elapsed: 0.06 secs 4164993/sec
[info] level-off Elapsed: 0.00 secs 462962962/sec
test bench_file ... bench: 166 ns/iter (+/- 10)
test bench_level_off ... bench: 1 ns/iter (+/- 0)
test bench_rotating_daily ... bench: 172 ns/iter (+/- 7)
test bench_rotating_file_size ... bench: 176 ns/iter (+/- 20)
spdlog ([4cfdc8c])Compiled with cmake -G "Visual Studio 16 2019" -A x64 -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_STANDARD=20 -DCMAKE_CXX_STANDARD_REQUIRED=ON -DSPDLOG_BUILD_BENCH=ON -DSPDLOG_BUILD_EXAMPLE=OFF -DSPDLOG_USE_STD_FORMAT=ON
[info] **************************************************************
[info] Multi threaded: 1 threads, 250,000 messages
[info] **************************************************************
[info] basic_mt Elapsed: 0.15 secs 1,654,676/sec
[info] rotating_mt Elapsed: 0.16 secs 1,576,156/sec
[info] daily_mt Elapsed: 0.15 secs 1,671,424/sec
[info] level-off Elapsed: 0.00 secs 132,597,857/sec
[info] **************************************************************
[info] Multi threaded: 4 threads, 250,000 messages
[info] **************************************************************
[info] basic_mt Elapsed: 0.26 secs 965,885/sec
[info] rotating_mt Elapsed: 0.26 secs 964,368/sec
[info] daily_mt Elapsed: 0.25 secs 981,449/sec
[info] level-off Elapsed: 0.00 secs 135,310,673/sec
Compiled with cmake -G "Visual Studio 16 2019" -A x64 -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_STANDARD=20 -DCMAKE_CXX_STANDARD_REQUIRED=ON -DSPDLOG_BUILD_BENCH=ON -DSPDLOG_BUILD_EXAMPLE=OFF
[info] **************************************************************
[info] Multi threaded: 1 threads, 250,000 messages
[info] **************************************************************
[info] basic_mt Elapsed: 0.06 secs 3,917,304/sec
[info] rotating_mt Elapsed: 0.06 secs 3,942,073/sec
[info] daily_mt Elapsed: 0.07 secs 3,784,707/sec
[info] level-off Elapsed: 0.00 secs 148,174,490/sec
[info] **************************************************************
[info] Multi threaded: 4 threads, 250,000 messages
[info] **************************************************************
[info] basic_mt Elapsed: 0.11 secs 2,356,303/sec
[info] rotating_mt Elapsed: 0.12 secs 2,138,911/sec
[info] daily_mt Elapsed: 0.12 secs 2,163,183/sec
[info] level-off Elapsed: 0.00 secs 148,060,408/sec
slog (2.7.0)
test bench_file ... bench: 469 ns/iter (+/- 19)
test bench_level_off ... bench: 2 ns/iter (+/- 0)
test bench_rotating_daily ... bench: unavailable
test bench_rotating_file_size ... bench: 480 ns/iter (+/- 13)
flexi_logger (0.22.2)
test bench_file ... bench: 673 ns/iter (+/- 11)
test bench_level_off ... bench: 0 ns/iter (+/- 0)
test bench_rotating_daily ... bench: 746 ns/iter (+/- 40)
test bench_rotating_file_size ... bench: 676 ns/iter (+/- 38)
log4rs (1.0.0)
test bench_file ... bench: 3,769 ns/iter (+/- 95)
test bench_level_off ... bench: 0 ns/iter (+/- 0)
test bench_rotating_daily ... bench: unavailable
test bench_rotating_file_size ... bench: 3,773 ns/iter (+/- 117)
fern (0.6.0)
test bench_file ... bench: 3,687 ns/iter (+/- 101)
test bench_level_off ... bench: unavailable
test bench_rotating_daily ... bench: unavailable
test bench_rotating_file_size ... bench: unavailable
Licensed under either of
at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.