mirror of https://github.com/golang/go.git
bb4a817a92
50% fewer mallocs in HTML tokenization, resulting in 25% fewer mallocs
in parsing go1.html.
Making the parser use integer comparisons instead of string comparisons
will be a follow-up CL, to be co-ordinated with Andy Balholm's work.
exp/html benchmarks before/after:
BenchmarkParser 500 4754294 ns/op 16.44 MB/s
parse_test.go:409: 500 iterations, 14651 mallocs per iteration
BenchmarkRawLevelTokenizer 2000 903481 ns/op 86.51 MB/s
token_test.go:678: 2000 iterations, 28 mallocs per iteration
BenchmarkLowLevelTokenizer 2000 1260485 ns/op 62.01 MB/s
token_test.go:678: 2000 iterations, 41 mallocs per iteration
BenchmarkHighLevelTokenizer 1000 2165964 ns/op 36.09 MB/s
token_test.go:678: 1000 iterations, 6616 mallocs per iteration
BenchmarkParser 500 4664912 ns/op 16.76 MB/s
parse_test.go:409: 500 iterations, 11266 mallocs per iteration
BenchmarkRawLevelTokenizer 2000 903065 ns/op 86.55 MB/s
token_test.go:678: 2000 iterations, 28 mallocs per iteration
BenchmarkLowLevelTokenizer 2000 1260032 ns/op 62.03 MB/s
token_test.go:678: 2000 iterations, 41 mallocs per iteration
BenchmarkHighLevelTokenizer 1000 2143356 ns/op 36.47 MB/s
token_test.go:678: 1000 iterations, 3231 mallocs per iteration
R=r, rsc, rogpeppe
CC=andybalholm, golang-dev
https://golang.org/cl/6255062
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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.