在我的windows机器上,每次调用git stash的开销约为3.5秒,这为我的git钩子增加了大约7秒。
在linux (同一台机器)下,相同的命令大约需要0.01秒。性能问题也适用于空存储库。
core.fscache设置为truecore.preloadindex设置为truegc.auto设置为256运行GIT_TRACE=true git stash list
16:58:16.844591 git.c:563 trace: exec: 'git-stash' 'list'
16:58:16.844591 run-command.c:336 trace: run_command: 'git-stash' 'list'
16:58:19.699591 git.c:350 trace: built-in: git 'rev-parse' '--git-dir'
16:58:19.859591 git.c:350 trace: built-in: git 'rev-parse' '--git-path' 'objects'
16:58:20.069591 git.c:350 trace: built-in: git 'rev-parse' '--show-toplevel'
16:58:20.154591 git.c:350 trace: built-in: git 'rev-parse' '--git-path' 'index'
16:58:20.244591 git.c:350 trace: built-in: git 'config' '--get-colorbool' 'color.interactive'
16:58:20.334591 git.c:350 trace: built-in: git 'config' '--get-color' 'color.interactive.help' 'red bold'
16:58:20.424591 git.c:350 trace: built-in: git 'config' '--get-color' '' 'reset'
16:58:20.514591 git.c:350 trace: built-in: git 'rev-parse' '--verify' '--quiet' 'refs/stash'
real 0m3.845s
user 0m0.000s
sys 0m0.047s运行GIT_TRACE_PERFORMANCE=true git stash list
16:59:18.414591 trace.c:420 performance: 0.001078046 s: git command: 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' 'rev-parse' '--git-dir'
16:59:18.569591 trace.c:420 performance: 0.000947184 s: git command: 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' 'rev-parse' '--git-path' 'objects'
16:59:18.779591 trace.c:420 performance: 0.001253627 s: git command: 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' 'rev-parse' '--show-toplevel'
16:59:18.869591 trace.c:420 performance: 0.001285517 s: git command: 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' 'rev-parse' '--git-path' 'index'
16:59:18.955591 trace.c:420 performance: 0.001139994 s: git command: 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' 'config' '--get-colorbool' 'color.interactive'
16:59:19.040591 trace.c:420 performance: 0.001182881 s: git command: 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' 'config' '--get-color' 'color.interactive.help' 'red bold'
16:59:19.125591 trace.c:420 performance: 0.001128997 s: git command: 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' 'config' '--get-color' '' 'reset'
16:59:19.215591 trace.c:420 performance: 0.001567766 s: git command: 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' 'rev-parse' '--verify' '--quiet' 'refs/stash'
16:59:19.295591 trace.c:420 performance: 3.730583540 s: git command: 'C:\Program Files\Git\mingw64\bin\git.exe' 'stash' 'list'
real 0m3.819s
user 0m0.000s
sys 0m0.062s 从日志中我们看到,在运行git-stash命令和运行git-rev-解析之间需要大约3秒的时间。还有其他的标志我可以跑找到瓶颈吗?
发布于 2017-03-07 13:04:55
git-stash是一个脚本,而不是在git.exe二进制文件中编译的命令。
在linux上:我可以在git-stash上找到/usr/lib/git-core/git-stash -我会让你在windows上寻找正确的路径.
这个脚本使用#!/bin/sh来运行,我不知道在windows上运行它时使用的是什么shell实现。
您可以尝试使用另一个兼容的shell (此处: bash)运行它:
# the git-core/ dir needs to be in the PATH,
# obviously you will need to provide the correct path for your git-core dir
$ PATH=/usr/lib/git-core:$PATH bash /usr/lib/git-core/git-stash您还可以打开-x标志,它将打印执行的所有命令的跟踪,并直观地检查其中一个子命令是否似乎是挂起的:
$ PATH=/usr/lib/git-core:$PATH bash -x /usr/lib/git-core/git-stashhttps://stackoverflow.com/questions/37529016
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