try876

Profiling performance

Using perf:

$ perf record -g binary
$ perf script | stackcollapse-perf.pl | rust-unmangle | flamegraph.pl > flame.svg

NOTE: See @GabrielMajeri's comments below about the -g option.

	进命令行，设置代理到ss
	set http_proxy=http://127.0.0.1:1080
	set https_proxy=https://127.0.0.1:1080

	mkdir -p $GOPATH/src/golang.org/x
	cd $GOPATH/src/golang.org/x
	git clone https://github.com/golang/tools.git

	Cloning into 'tools'...
	remote: Counting objects: 19439, done.