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The Go programming language
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The move from 4kB to 8kB in Go 1.2 was to eliminate many stack split hot spots. The move back to 4kB was predicated on copying stacks eliminating the potential for hot spots. Unfortunately, the fact that stacks do not copy 100% of the time means that hot spots can still happen under the right conditions, and the slowdown is worse now than it was in Go 1.2. There is a real program in issue 8030 that sees about a 30x slowdown: it has a reflect call near the top of the stack which inhibits any stack copying on that segment. Go back to 8kB until stack copying can be used 100% of the time. Fixes #8030. LGTM=khr, dave, iant R=iant, khr, r, bradfitz, dave CC=golang-codereviews https://golang.org/cl/92540043 |
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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-source.html
in your web browser.
After installing Go, you can view a nicely formatted
doc/install-source.html by running godoc --http=:6060
and then visiting http://localhost:6060/doc/install/source.
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.