mirror of
https://github.com/golang/go
synced 2024-11-19 08:44:39 -07:00
The Go programming language
ab636b899c
ARMv8 defines crc32 instruction. Comparing to the original crc32 calculation, this patch makes use of crc32 instructions to do crc32 calculation instead of the multiple lookup table algorithms. ARMv8 provides IEEE and Castagnoli polynomials for crc32 calculation so that the perfomance of these two types of crc32 get significant improved. name old time/op new time/op delta CRC32/poly=IEEE/size=15/align=0-32 117ns ± 0% 38ns ± 0% -67.44% CRC32/poly=IEEE/size=15/align=1-32 117ns ± 0% 38ns ± 0% -67.52% CRC32/poly=IEEE/size=40/align=0-32 129ns ± 0% 41ns ± 0% -68.37% CRC32/poly=IEEE/size=40/align=1-32 129ns ± 0% 41ns ± 0% -68.29% CRC32/poly=IEEE/size=512/align=0-32 828ns ± 0% 246ns ± 0% -70.29% CRC32/poly=IEEE/size=512/align=1-32 828ns ± 0% 132ns ± 0% -84.06% CRC32/poly=IEEE/size=1kB/align=0-32 1.58µs ± 0% 0.46µs ± 0% -70.98% CRC32/poly=IEEE/size=1kB/align=1-32 1.58µs ± 0% 0.46µs ± 0% -70.92% CRC32/poly=IEEE/size=4kB/align=0-32 6.06µs ± 0% 1.74µs ± 0% -71.27% CRC32/poly=IEEE/size=4kB/align=1-32 6.10µs ± 0% 1.74µs ± 0% -71.44% CRC32/poly=IEEE/size=32kB/align=0-32 48.3µs ± 0% 13.7µs ± 0% -71.61% CRC32/poly=IEEE/size=32kB/align=1-32 48.3µs ± 0% 13.7µs ± 0% -71.60% CRC32/poly=Castagnoli/size=15/align=0-32 116ns ± 0% 38ns ± 0% -67.07% CRC32/poly=Castagnoli/size=15/align=1-32 116ns ± 0% 38ns ± 0% -66.90% CRC32/poly=Castagnoli/size=40/align=0-32 127ns ± 0% 40ns ± 0% -68.11% CRC32/poly=Castagnoli/size=40/align=1-32 127ns ± 0% 40ns ± 0% -68.11% CRC32/poly=Castagnoli/size=512/align=0-32 828ns ± 0% 132ns ± 0% -84.06% CRC32/poly=Castagnoli/size=512/align=1-32 827ns ± 0% 132ns ± 0% -84.04% CRC32/poly=Castagnoli/size=1kB/align=0-32 1.59µs ± 0% 0.22µs ± 0% -85.89% CRC32/poly=Castagnoli/size=1kB/align=1-32 1.58µs ± 0% 0.22µs ± 0% -85.79% CRC32/poly=Castagnoli/size=4kB/align=0-32 6.14µs ± 0% 0.77µs ± 0% -87.40% CRC32/poly=Castagnoli/size=4kB/align=1-32 6.06µs ± 0% 0.77µs ± 0% -87.25% CRC32/poly=Castagnoli/size=32kB/align=0-32 48.3µs ± 0% 5.9µs ± 0% -87.71% CRC32/poly=Castagnoli/size=32kB/align=1-32 48.4µs ± 0% 6.0µs ± 0% -87.69% CRC32/poly=Koopman/size=15/align=0-32 104ns ± 0% 104ns ± 0% +0.00% CRC32/poly=Koopman/size=15/align=1-32 104ns ± 0% 104ns ± 0% +0.00% CRC32/poly=Koopman/size=40/align=0-32 235ns ± 0% 235ns ± 0% +0.00% CRC32/poly=Koopman/size=40/align=1-32 235ns ± 0% 235ns ± 0% +0.00% CRC32/poly=Koopman/size=512/align=0-32 2.71µs ± 0% 2.71µs ± 0% -0.07% CRC32/poly=Koopman/size=512/align=1-32 2.71µs ± 0% 2.71µs ± 0% -0.04% CRC32/poly=Koopman/size=1kB/align=0-32 5.40µs ± 0% 5.39µs ± 0% -0.06% CRC32/poly=Koopman/size=1kB/align=1-32 5.40µs ± 0% 5.40µs ± 0% +0.02% CRC32/poly=Koopman/size=4kB/align=0-32 21.5µs ± 0% 21.5µs ± 0% -0.16% CRC32/poly=Koopman/size=4kB/align=1-32 21.5µs ± 0% 21.5µs ± 0% -0.05% CRC32/poly=Koopman/size=32kB/align=0-32 172µs ± 0% 172µs ± 0% -0.07% CRC32/poly=Koopman/size=32kB/align=1-32 172µs ± 0% 172µs ± 0% -0.01% name old speed new speed delta CRC32/poly=IEEE/size=15/align=0-32 128MB/s ± 0% 394MB/s ± 0% +207.95% CRC32/poly=IEEE/size=15/align=1-32 128MB/s ± 0% 394MB/s ± 0% +208.09% CRC32/poly=IEEE/size=40/align=0-32 310MB/s ± 0% 979MB/s ± 0% +216.07% CRC32/poly=IEEE/size=40/align=1-32 310MB/s ± 0% 979MB/s ± 0% +216.16% CRC32/poly=IEEE/size=512/align=0-32 618MB/s ± 0% 2074MB/s ± 0% +235.72% CRC32/poly=IEEE/size=512/align=1-32 618MB/s ± 0% 3852MB/s ± 0% +523.55% CRC32/poly=IEEE/size=1kB/align=0-32 646MB/s ± 0% 2225MB/s ± 0% +244.57% CRC32/poly=IEEE/size=1kB/align=1-32 647MB/s ± 0% 2225MB/s ± 0% +243.87% CRC32/poly=IEEE/size=4kB/align=0-32 676MB/s ± 0% 2352MB/s ± 0% +248.02% CRC32/poly=IEEE/size=4kB/align=1-32 672MB/s ± 0% 2352MB/s ± 0% +250.15% CRC32/poly=IEEE/size=32kB/align=0-32 678MB/s ± 0% 2387MB/s ± 0% +252.17% CRC32/poly=IEEE/size=32kB/align=1-32 678MB/s ± 0% 2388MB/s ± 0% +252.11% CRC32/poly=Castagnoli/size=15/align=0-32 129MB/s ± 0% 393MB/s ± 0% +205.51% CRC32/poly=Castagnoli/size=15/align=1-32 129MB/s ± 0% 390MB/s ± 0% +203.41% CRC32/poly=Castagnoli/size=40/align=0-32 314MB/s ± 0% 988MB/s ± 0% +215.04% CRC32/poly=Castagnoli/size=40/align=1-32 314MB/s ± 0% 987MB/s ± 0% +214.68% CRC32/poly=Castagnoli/size=512/align=0-32 618MB/s ± 0% 3860MB/s ± 0% +524.32% CRC32/poly=Castagnoli/size=512/align=1-32 619MB/s ± 0% 3859MB/s ± 0% +523.66% CRC32/poly=Castagnoli/size=1kB/align=0-32 645MB/s ± 0% 4568MB/s ± 0% +608.56% CRC32/poly=Castagnoli/size=1kB/align=1-32 650MB/s ± 0% 4567MB/s ± 0% +602.94% CRC32/poly=Castagnoli/size=4kB/align=0-32 667MB/s ± 0% 5297MB/s ± 0% +693.81% CRC32/poly=Castagnoli/size=4kB/align=1-32 676MB/s ± 0% 5297MB/s ± 0% +684.00% CRC32/poly=Castagnoli/size=32kB/align=0-32 678MB/s ± 0% 5519MB/s ± 0% +713.83% CRC32/poly=Castagnoli/size=32kB/align=1-32 677MB/s ± 0% 5497MB/s ± 0% +712.04% CRC32/poly=Koopman/size=15/align=0-32 143MB/s ± 0% 144MB/s ± 0% +0.27% CRC32/poly=Koopman/size=15/align=1-32 143MB/s ± 0% 144MB/s ± 0% +0.33% CRC32/poly=Koopman/size=40/align=0-32 169MB/s ± 0% 170MB/s ± 0% +0.12% CRC32/poly=Koopman/size=40/align=1-32 170MB/s ± 0% 170MB/s ± 0% +0.08% CRC32/poly=Koopman/size=512/align=0-32 189MB/s ± 0% 189MB/s ± 0% +0.07% CRC32/poly=Koopman/size=512/align=1-32 189MB/s ± 0% 189MB/s ± 0% +0.04% CRC32/poly=Koopman/size=1kB/align=0-32 190MB/s ± 0% 190MB/s ± 0% +0.05% CRC32/poly=Koopman/size=1kB/align=1-32 190MB/s ± 0% 190MB/s ± 0% -0.01% CRC32/poly=Koopman/size=4kB/align=0-32 190MB/s ± 0% 190MB/s ± 0% +0.15% CRC32/poly=Koopman/size=4kB/align=1-32 190MB/s ± 0% 191MB/s ± 0% +0.05% CRC32/poly=Koopman/size=32kB/align=0-32 191MB/s ± 0% 191MB/s ± 0% +0.06% CRC32/poly=Koopman/size=32kB/align=1-32 191MB/s ± 0% 191MB/s ± 0% +0.02% Also fix a bug of arm64 assembler The optimization is mainly contributed by Fangming.Fang <fangming.fang@arm.com> Change-Id: I900678c2e445d7e8ad9e2a9ab3305d649230905f Reviewed-on: https://go-review.googlesource.com/40074 Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
||
|---|---|---|
| .github | ||
| api | ||
| doc | ||
| lib/time | ||
| misc | ||
| src | ||
| test | ||
| .gitattributes | ||
| .gitignore | ||
| AUTHORS | ||
| CONTRIBUTING.md | ||
| CONTRIBUTORS | ||
| favicon.ico | ||
| LICENSE | ||
| PATENTS | ||
| README.md | ||
| robots.txt | ||
The Go Programming Language
Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.
Gopher image by Renee French, licensed under Creative Commons 3.0 Attributions license.
Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.
Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.
Download and Install
Binary Distributions
Official binary distributions are available at https://golang.org/dl/.
After downloading a binary release, visit https://golang.org/doc/install or load doc/install.html in your web browser for installation instructions.
Install From Source
If a binary distribution is not available for your combination of operating system and architecture, visit https://golang.org/doc/install/source or load doc/install-source.html in your web browser for source installation instructions.
Contributing
Go is the work of hundreds of contributors. We appreciate your help!
To contribute, please read the contribution guidelines: https://golang.org/doc/contribute.html
Note that the Go project does not use GitHub pull requests, and that we use the issue tracker for bug reports and proposals only. See https://golang.org/wiki/Questions for a list of places to ask questions about the Go language.