git藏匿在窗户上很慢 [英] git stash is slow on windows
问题描述
在我的Windows机器上，每个调用都有大约3.5秒的时间开销，这为我的git commit钩子增加了大约7秒。
在linux（同一台机器）下的相同命令大约需要0.01秒。性能问题也适用于空存储库。
我从此主题和 this thread ：
-
core.fscache设为true -
core.preloadindex设置为true -
gc.auto设置为256 - 设置PS1 ='$'
- 以管理模式运行cmd
- 运行在 cmd.exe 而不是git-bash中
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：内置：git'rev-parse''--verify''--quiet''refs / stash'
real 0m3.845s
用户0m0.000s
sys 0m0.047s
运行 GIT_TRACE_PERFORMANCE = true git stash list $ b $ p $ 16：59：18.414591 trace.c：420性能：0.001078046 s：git命令：'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性能：0.001253627 s：git命令：'C：\ Program Files \Git\mingw64\libexec\git-core\git.exe''rev -parse''--show-toplevel'
16：59：18.869591 trace.c：420性能：0.001285517 s：git命令：'C：\Program Fil es\Git\mingw64\libexec\git-core\git.exe''rev-parse''--git-path''index'
16：59：18.955591 trace.c：420性能：0.001139994 s：git命令：'C：\ Program Files \Git\mingw64\libexec\git-core\git.exe''config''--get-colorbool''color.interactive'
16：59：19.040591 trace.c：420性能：0.001182881 s：git命令：'C：\ Program Files \Git\mingw64\libexec\git-core\git.exe'' config''--get-color''color.interactive.help''红色粗体'
16：59：19.125591 trace.c：420性能：0.001128997 s：git命令：'C：\程序文件\\ git\mingw64\libexec\git-core\git.exe''config''--get-color''''reset'
16：59：19.215591 trace.c：420性能： 0.001567766 s：git命令：'C：\ Program Files \Git\mingw64\libexec\git-core\git.exe''rev-parse''--verify''--quiet''refs / stash'
16：59：19.295591 trace.c：420性能：3.730583540 s：git命令：'C：\ Program Files \Git\mingw64\bin\git.exe''stash''list'
real 0m3.819s
用户0m0.000s
sys 0m0.062s
从日志中我们可以看到，git-stash命令运行和运行git-rev-parse。是否还有其他标志可以运行以找到瓶颈？
git.exe 二进制文件中的命令。
在linux上：我可以在 / usr / lib / git-core / git-stash 找到 git-stash - 我会让你在窗口中寻找正确的路径...
$ b
这个脚本使用＃！/ bin / sh 来运行，我不知道在Windows上运行时使用了哪个shell实现。
你可以尝试运行它另一个兼容的shell（这里是：bash）：
pre $ ＃git-core / dir需要在PATH中，
＃显然你需要为你的git-core目录提供正确的路径
$ PATH = / usr / lib / git-core：$ PATH bash / usr / lib / git-core / git -stash
您也可以将 -x 标志，它将打印所有执行的命令的跟踪信息，并通过目测检查是否打开e的子命令似乎是挂钩：
$ PATH = / usr / lib / git-core：$ PATH bash -x / usr / lib / git-core / git -stash
On my windows machine git stash has about 3.5 seconds overhead on each invocation, which adds about 7 seconds to my git commit hook.
The same command under linux (same machine) takes about 0.01 seconds. The performance issue applies to empty repositories as well.
I have tried the following from this thread and this thread:
core.fscacheis set totruecore.preloadindexis set totruegc.autois set to256- Setting PS1='$ '
- Running cmd in administration mode
- Running inside cmd.exe instead of git-bash
Running 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
Running 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
From the log we see that it takes around 3 seconds between the git-stash command is run and the git-rev-parse is run. Are there any other flags I can run to find the bottleneck?
git-stash is a script, not a command compiled in the git.exe binary.
On linux : I can find git-stash at /usr/lib/git-core/git-stash - I will let you look for the correct path on windows ...
This script uses #!/bin/sh to run, I don't know what shell implementation is used when you run this on windows.
You can try to run it with another compatible shell (here: bash) :
# 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
You can also turn the -x flag, which will print a trace of all commands executed, and visually check if one of the sub commands seems to be the hanger :
$ PATH=/usr/lib/git-core:$PATH bash -x /usr/lib/git-core/git-stash
这篇关于git藏匿在窗户上很慢的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
