Find a file
Daniel Martí a1925076fe cmd/go: add benchmark that execs 'go env GOARCH'
'go env' is used for many quick operations, such as in go/packages to
query GOARCH and GOMOD. It often is a bottleneck; for example,
go/packages doesn't know whether or not to use Go modules until it has
queried GOMOD.

As such, this go command should be fast. Right now it's slower than it
should be. This commit adds a simple benchmark with os/exec, since we're
particularly interested in the cost of cmd/go's large init function.

Updates #29382.

Change-Id: Ifee6fb9997b9b89565fbfc2739a00c86117b1d37
Reviewed-on: https://go-review.googlesource.com/c/155961
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2019-02-27 16:18:23 +00:00
.github .github: don't render author-facing text in ISSUE_TEMPLATE 2018-11-02 04:47:34 +00:00
api text/scanner: don't liberally consume (invalid) floats or underbars 2019-02-20 20:23:28 +00:00
doc doc: add 1.12 to the project history 2019-02-26 17:31:55 +00:00
lib/time time: read 64-bit data if available 2019-02-26 23:10:35 +00:00
misc misc/android: copy testdata directories to device before running 2019-02-26 18:01:15 +00:00
src cmd/go: add benchmark that execs 'go env GOARCH' 2019-02-27 16:18:23 +00:00
test cmd/compile: optimize math/bits Len32 intrinsic on arm64 2019-02-27 16:09:33 +00:00
.gitattributes .gitattributes: prevent all magic line ending changes 2014-12-12 23:14:54 +00:00
.gitignore .gitignore: ignore src/cmd/dist/dist 2017-10-28 21:55:49 +00:00
AUTHORS A+C: change email address for Elias Naur 2019-01-23 15:05:26 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS CONTRIBUTORS: second round of updates for Go 1.12 2019-01-30 18:01:19 +00:00
favicon.ico website: recreate 16px and 32px favicon 2016-08-25 15:43:32 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
README.md README: linkify some paths 2018-06-06 18:07:01 +00:00
robots.txt godoc: serve robots.txt raw 2011-02-19 05:46:20 +11:00

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

Gopher image Gopher image by Renee French, licensed under Creative Commons 3.0 Attributions license.

Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.

Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.

Download and Install

Binary Distributions

Official binary distributions are available at https://golang.org/dl/.

After downloading a binary release, visit https://golang.org/doc/install or load doc/install.html in your web browser for installation instructions.

Install From Source

If a binary distribution is not available for your combination of operating system and architecture, visit https://golang.org/doc/install/source or load doc/install-source.html in your web browser for source installation instructions.

Contributing

Go is the work of thousands of contributors. We appreciate your help!

To contribute, please read the contribution guidelines: https://golang.org/doc/contribute.html

Note that the Go project uses the issue tracker for bug reports and proposals only. See https://golang.org/wiki/Questions for a list of places to ask questions about the Go language.