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The Go programming language
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1. SudoG always contains a pointer to the element (thus no variable size, and less copying). 2. chansend/chanrecv allocate SudoG on the stack. 3. Copying of elements and gorotuine notifications are moved out of critical sections. benchmark old ns/op new ns/op delta BenchmarkSelectUncontended 515.00 514.00 -0.19% BenchmarkSelectUncontended-2 291.00 281.00 -3.44% BenchmarkSelectUncontended-4 213.00 189.00 -11.27% BenchmarkSelectUncontended-8 78.30 79.00 +0.89% BenchmarkSelectContended 518.00 514.00 -0.77% BenchmarkSelectContended-2 655.00 631.00 -3.66% BenchmarkSelectContended-4 1026.00 1051.00 +2.44% BenchmarkSelectContended-8 2026.00 2128.00 +5.03% BenchmarkSelectNonblock 175.00 173.00 -1.14% BenchmarkSelectNonblock-2 85.10 87.70 +3.06% BenchmarkSelectNonblock-4 60.10 43.30 -27.95% BenchmarkSelectNonblock-8 37.60 25.50 -32.18% BenchmarkChanUncontended 109.00 114.00 +4.59% BenchmarkChanUncontended-2 54.60 57.20 +4.76% BenchmarkChanUncontended-4 27.40 28.70 +4.74% BenchmarkChanUncontended-8 14.60 15.10 +3.42% BenchmarkChanContended 108.00 114.00 +5.56% BenchmarkChanContended-2 621.00 617.00 -0.64% BenchmarkChanContended-4 759.00 677.00 -10.80% BenchmarkChanContended-8 1635.00 1517.00 -7.22% BenchmarkChanSync 299.00 256.00 -14.38% BenchmarkChanSync-2 5055.00 4624.00 -8.53% BenchmarkChanSync-4 4998.00 4680.00 -6.36% BenchmarkChanSync-8 5019.00 4760.00 -5.16% BenchmarkChanProdCons0 316.00 274.00 -13.29% BenchmarkChanProdCons0-2 1280.00 617.00 -51.80% BenchmarkChanProdCons0-4 2433.00 1332.00 -45.25% BenchmarkChanProdCons0-8 3651.00 1934.00 -47.03% BenchmarkChanProdCons10 153.00 152.00 -0.65% BenchmarkChanProdCons10-2 626.00 581.00 -7.19% BenchmarkChanProdCons10-4 1440.00 1323.00 -8.12% BenchmarkChanProdCons10-8 2036.00 2017.00 -0.93% R=rsc, ken CC=golang-dev https://golang.org/cl/4790042 |
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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.