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833529fd6f
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Nigel Tao 833529fd6f compress/lzw: reduce decoder buffer size from 3*4096 to 2*4096. 
This happens to speed up the decoder benchmarks by 50% on my computer
(GOARCH=amd64 GOOS=linux), but I don't have a good intuition as to why.
For example, just adding an unused [4096]byte field to the decoder
struct doesn't significantly change the numbers.

Before:

lzw.BenchmarkDecoder1e4	    5000	    488057 ns/op	  20.49 MB/s
lzw.BenchmarkDecoder1e5	     500	   4613638 ns/op	  21.67 MB/s
lzw.BenchmarkDecoder1e6	      50	  45672260 ns/op	  21.90 MB/s
lzw.BenchmarkEncoder1e4	    5000	    353563 ns/op	  28.28 MB/s
lzw.BenchmarkEncoder1e5	     500	   3431618 ns/op	  29.14 MB/s
lzw.BenchmarkEncoder1e6	      50	  34009640 ns/op	  29.40 MB/s

After:

lzw.BenchmarkDecoder1e4	    5000	    339725 ns/op	  29.44 MB/s
lzw.BenchmarkDecoder1e5	     500	   3166894 ns/op	  31.58 MB/s
lzw.BenchmarkDecoder1e6	      50	  31317260 ns/op	  31.93 MB/s
lzw.BenchmarkEncoder1e4	    5000	    354909 ns/op	  28.18 MB/s
lzw.BenchmarkEncoder1e5	     500	   3432710 ns/op	  29.13 MB/s
lzw.BenchmarkEncoder1e6	      50	  34010500 ns/op	  29.40 MB/s

R=rsc, r
CC=golang-dev
https://golang.org/cl/4535123
2011-06-09 09:50:38 +10:00
doc go spec: handle a corner case of a special case for shifts... 2011-06-08 09:11:18 -07:00
include windows: replace remaining __MINGW32__ instances with _WIN32 2011-02-08 15:42:52 -05:00
lib godoc: display advert for the package dashboard on package list page 2011-05-24 15:45:08 +10:00
misc http: change most map[string][]string types to new Values type 2011-06-08 13:38:20 -07:00
src compress/lzw: reduce decoder buffer size from 3*4096 to 2*4096. 2011-06-09 09:50:38 +10:00
test gc: fix m[x], _ = y.(T) 2011-05-31 15:52:04 -04:00
.hgignore go/build: exclude cgo test from arm 2011-06-06 09:25:30 +10:00
.hgtags tag weekly.2011-06-02 2011-06-03 11:20:02 +10:00
AUTHORS A+C: Jonathan Mark (individual CLA) 2011-06-07 21:49:24 -07:00
CONTRIBUTORS A+C: Jonathan Mark (individual CLA) 2011-06-07 21:49:24 -07:00
favicon.ico add a favicon plus a couple of hi-res versions of gordon 2009-10-26 10:13:07 -07:00
LICENSE LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
README build: update, streamline documentation for new $GOBIN 2010-08-24 20:00:50 -04:00
robots.txt godoc: serve robots.txt raw 2011-02-19 05:46:20 +11:00

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.