mirror of https://github.com/golang/go.git
1af960802a
-- amd64 -- On a MacBookPro10,2 (Core i5): benchmark old ns/op new ns/op delta BenchmarkRC4_128 470 421 -10.43% BenchmarkRC4_1K 3123 3275 +4.87% BenchmarkRC4_8K 26351 25866 -1.84% benchmark old MB/s new MB/s speedup BenchmarkRC4_128 272.22 303.40 1.11x BenchmarkRC4_1K 327.80 312.58 0.95x BenchmarkRC4_8K 307.24 313.00 1.02x For comparison, on the same machine, openssl 0.9.8r reports its rc4 speed as somewhat under 350 MB/s for both 1K and 8K. The Core i5 performance can be boosted another 20%, but only by making the Xeon performance significantly slower. On an Intel Xeon E5520: benchmark old ns/op new ns/op delta BenchmarkRC4_128 774 417 -46.12% BenchmarkRC4_1K 6121 3200 -47.72% BenchmarkRC4_8K 48394 25151 -48.03% benchmark old MB/s new MB/s speedup BenchmarkRC4_128 165.18 306.84 1.86x BenchmarkRC4_1K 167.28 319.92 1.91x BenchmarkRC4_8K 167.29 321.89 1.92x For comparison, on the same machine, openssl 1.0.1 (which uses a different implementation than 0.9.8r) reports its rc4 speed as 587 MB/s for 1K and 601 MB/s for 8K. It is using SIMD instructions to do more in parallel. So there's still some improvement to be had, but even so, this is almost 2x faster than what it replaced. -- 386 -- On a MacBookPro10,2 (Core i5): benchmark old ns/op new ns/op delta BenchmarkRC4_128 3491 421 -87.94% BenchmarkRC4_1K 28063 3205 -88.58% BenchmarkRC4_8K 220392 25228 -88.55% benchmark old MB/s new MB/s speedup BenchmarkRC4_128 36.66 303.81 8.29x BenchmarkRC4_1K 36.49 319.42 8.75x BenchmarkRC4_8K 36.73 320.90 8.74x On an Intel Xeon E5520: benchmark old ns/op new ns/op delta BenchmarkRC4_128 2268 524 -76.90% BenchmarkRC4_1K 18161 4137 -77.22% BenchmarkRC4_8K 142396 32350 -77.28% benchmark old MB/s new MB/s speedup BenchmarkRC4_128 56.42 244.13 4.33x BenchmarkRC4_1K 56.38 247.46 4.39x BenchmarkRC4_8K 56.86 250.26 4.40x R=agl CC=golang-dev https://golang.org/cl/7547050 |
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| doc | ||
| include | ||
| lib | ||
| misc | ||
| src | ||
| test | ||
| .hgignore | ||
| .hgtags | ||
| AUTHORS | ||
| CONTRIBUTORS | ||
| LICENSE | ||
| PATENTS | ||
| README | ||
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| robots.txt | ||
README
This is the source code repository for the Go programming language.
For documentation about how to install and use Go,
visit http://golang.org/ or load doc/install.html in your web browser.
After installing Go, you can view a nicely formatted
doc/install.html by running godoc --http=:6060
and then visiting http://localhost:6060/doc/install.html.
Unless otherwise noted, the Go source files are distributed
under the BSD-style license found in the LICENSE file.
--
Binary Distribution Notes
If you have just untarred a binary Go distribution, you need to set
the environment variable $GOROOT to the full path of the go
directory (the one containing this README). You can omit the
variable if you unpack it into /usr/local/go, or if you rebuild
from sources by running all.bash (see doc/install.html).
You should also add the Go binary directory $GOROOT/bin
to your shell's path.
For example, if you extracted the tar file into $HOME/go, you might
put the following in your .profile:
export GOROOT=$HOME/go
export PATH=$PATH:$GOROOT/bin
See doc/install.html for more details.