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Dmitriy Vyukov 0ad2cd004c bufio: fix benchmarks behavior 
Currently the benchmarks lie to testing package by doing O(N)
work under StopTimer. And that hidden O(N) actually consitutes
the bulk of benchmark work (e.g includes GC per iteration).
This behavior accounts for windows-amd64-race builder hangs.

Before:
BenchmarkReaderCopyOptimal-4	 1000000	      1861 ns/op
BenchmarkReaderCopyUnoptimal-4	  500000	      3327 ns/op
BenchmarkReaderCopyNoWriteTo-4	   50000	     34549 ns/op
BenchmarkWriterCopyOptimal-4	  100000	     16849 ns/op
BenchmarkWriterCopyUnoptimal-4	  500000	      3126 ns/op
BenchmarkWriterCopyNoReadFrom-4	   50000	     34609 ns/op
ok  	bufio	65.273s

After:
BenchmarkReaderCopyOptimal-4	10000000	       172 ns/op
BenchmarkReaderCopyUnoptimal-4	10000000	       267 ns/op
BenchmarkReaderCopyNoWriteTo-4	  100000	     22905 ns/op
BenchmarkWriterCopyOptimal-4	10000000	       170 ns/op
BenchmarkWriterCopyUnoptimal-4	10000000	       226 ns/op
BenchmarkWriterCopyNoReadFrom-4	  100000	     20575 ns/op
ok  	bufio	14.074s

Note the change in total time.

LGTM=alex.brainman, rsc
R=golang-codereviews, alex.brainman, rsc
CC=golang-codereviews
https://golang.org/cl/51360046
2014-01-23 15:13:21 -05:00
api api: update next.txt 2014-01-22 10:54:51 -08:00
doc testing: diagnose buggy tests that panic(nil) 2014-01-22 16:04:50 -05:00
include liblink: include missing pragmas for plan9 formatter 2014-01-22 06:23:19 +01:00
lib lib/codereview: add LGTM= line to commit messages 2014-01-23 15:10:38 -05:00
misc misc/cgo/testtls: make test less flaky 2014-01-21 19:44:51 -05:00
src bufio: fix benchmarks behavior 2014-01-23 15:13:21 -05:00
test cmd/gc: preserve qualified names of unexported methods in imports. 2014-01-21 22:55:50 -05:00
.hgignore .hgignore: remove duplicate entry 2013-12-12 19:01:50 -08:00
.hgtags tag go1.2 2013-12-02 09:06:41 +11:00
AUTHORS A+C: Maxim Khitrov (individual CLA) 2014-01-17 11:26:42 -05:00
CONTRIBUTORS A+C: Maxim Khitrov (individual CLA) 2014-01-17 11:26:42 -05:00
favicon.ico godoc: update favicon 2012-10-11 17:02:36 +11:00
LICENSE doc: update licensing text one more time 2012-03-27 15:09:13 +11:00
PATENTS
README README: Fix installation instructions 2013-11-20 13:47:37 -08:00
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-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.