Git 子模块命令在 Windows 10 上非常慢
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【中文标题】Git 子模块命令在 Windows 10 上非常慢【英文标题】：Git submodule commands are very slow on Windows 10 【发布时间】：2021-02-01 00:26:15 【问题描述】：Git submodule 命令在当前的 Windows 10 上非常慢（至少在使用 BitBucket 时，没有尝试过任何其他服务器）。
我有一个简单的 repo，其中包含一个包含 2 个小文本文件的子模块（整个子模块 repo 为 20kb）。如果我分别clone 两个 repos，我会在 1-5 秒内得到它们。
git submodule init 需要 ~5-10 秒。git submodule update 需要 ~2 分钟。git submodule update --init 和 git submodule add https://bitbucket.org/... 显示相同的结果。@987654330 @flag 什么都不显示。
我尝试在pwsh（Windows 终端）和普通cmd 中运行它们，结果相同。
我试过 SSH 和 HTTPS。
我读过这个git submodule update is slow. How can I debug why it's slow? 我尝试了这里的命令Git submodule update slow on Windows
cmd /V /C "set GIT_TRACE2_PERF=C:/Users/me/log.perf&& git submodule update"
并得到了这个结果（删除了 2 列：1 列刚刚说 main 和另一列带有 dup 时间）：
21:16:29.755412 common-main.c:48 | d0 | version | | | | 2.28.0.windows.1
21:16:29.756420 common-main.c:49 | d0 | start | | 0.035490 | | git.exe submodule update
21:16:29.770717 ..._win32_process_info.c:118 | d0 | data_json | r0 | 0.049596 | process | windows/ancestry:["git.exe","cmd.exe","pwsh.exe","WindowsTerminal.exe","explorer.exe"]
21:16:29.771683 git.c:698 | d0 | cmd_name | | | | _run_dashed_ (_run_dashed_)
21:16:29.772683 run-command.c:735 | d0 | child_start | | 0.051473 | | [ch0] class:dashed argv:[git-submodule update]
21:16:44.141790 common-main.c:48 | d1 | version | | | | 2.28.0.windows.1
21:16:44.142817 common-main.c:49 | d1 | start | | 0.036516 | | 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' --exec-path
21:16:44.163835 ..._win32_process_info.c:118 | d1 | data_json | r0 | 0.057664 | process | windows/ancestry:["sh.exe","sh.exe","sh.exe","git.exe","git.exe","cmd.exe","pwsh.exe","WindowsTerminal.exe","explorer.exe"]
21:16:44.163835 git.c:159 | d1 | cmd_name | | | | _query_ (_run_dashed_/_query_)
21:16:44.163835 ..._win32_process_info.c:166 | d1 | data_json | r0 | 0.058116 | process | windows/memory:"PageFaultCount":9464,"PeakWorkingSetSize":7643136,"PeakPagefileUsage":3694592
21:16:44.163835 git.c:160 | d1 | exit | | 0.058139 | | code:0
21:16:44.163835 trace2/tr2_tgt_perf.c:213 | d1 | atexit | | 0.058152 | | code:0
21:17:02.539359 common-main.c:48 | d1 | version | | | | 2.28.0.windows.1
21:17:02.540357 common-main.c:49 | d1 | start | | 0.049746 | | 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' sh-i18n--envsubst --variables 'usage: $dashless $USAGE'
21:17:02.568368 ..._win32_process_info.c:118 | d1 | data_json | r0 | 0.077844 | process | windows/ancestry:["sh.exe","sh.exe","sh.exe","sh.exe","sh.exe","git.exe","git.exe","cmd.exe","pwsh.exe","WindowsTerminal.exe","(truncated)"]
21:17:02.570378 git.c:698 | d1 | cmd_name | | | | _run_dashed_ (_run_dashed_/_run_dashed_)
21:17:02.570378 run-command.c:735 | d1 | child_start | | 0.080189 | | [ch0] class:dashed argv:[git-sh-i18n--envsubst --variables 'usage: $dashless $USAGE']
21:17:02.649337 common-main.c:48 | d2 | version | | | | 2.28.0.windows.1
21:17:02.651034 common-main.c:49 | d2 | start | | 0.046435 | | git-sh-i18n--envsubst --variables 'usage: $dashless $USAGE'
21:17:02.676042 ..._win32_process_info.c:118 | d2 | data_json | r0 | 0.072334 | process | windows/ancestry:["git.exe","sh.exe","sh.exe","sh.exe","sh.exe","sh.exe","git.exe","git.exe","cmd.exe","pwsh.exe","(truncated)"]
21:17:02.677049 sh-i18n--envsubst.c:71 | d2 | cmd_name | | | | sh-i18n--envsubst (_run_dashed_/_run_dashed_/sh-i18n--envsubst)
21:17:02.677049 ..._win32_process_info.c:166 | d2 | data_json | r0 | 0.072955 | process | windows/memory:"PageFaultCount":9935,"PeakWorkingSetSize":7585792,"PeakPagefileUsage":3579904
21:17:02.677049 sh-i18n--envsubst.c:112 | d2 | exit | | 0.072989 | | code:0
21:17:02.677049 trace2/tr2_tgt_perf.c:213 | d2 | atexit | | 0.073002 | | code:0
21:17:02.681054 run-command.c:990 | d1 | child_exit | | 0.191162 | | [ch0] pid:25708 code:0
21:17:02.682046 ..._win32_process_info.c:166 | d1 | data_json | r0 | 0.191827 | process | windows/memory:"PageFaultCount":9888,"PeakWorkingSetSize":7647232,"PeakPagefileUsage":3702784
21:17:02.682046 git.c:720 | d1 | exit | | 0.191901 | | code:0
21:17:02.682046 trace2/tr2_tgt_perf.c:213 | d1 | atexit | | 0.191942 | | code:0
21:17:04.796883 common-main.c:48 | d1 | version | | | | 2.28.0.windows.1
21:17:04.797907 common-main.c:49 | d1 | start | | 0.039257 | | 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' sh-i18n--envsubst 'usage: $dashless $USAGE'
21:17:04.819927 ..._win32_process_info.c:118 | d1 | data_json | r0 | 0.061218 | process | windows/ancestry:["sh.exe","sh.exe","sh.exe","sh.exe","git.exe","git.exe","cmd.exe","pwsh.exe","WindowsTerminal.exe","explorer.exe","(truncated)"]
21:17:04.821156 git.c:698 | d1 | cmd_name | | | | _run_dashed_ (_run_dashed_/_run_dashed_)
21:17:04.821156 run-command.c:735 | d1 | child_start | | 0.062881 | | [ch0] class:dashed argv:[git-sh-i18n--envsubst 'usage: $dashless $USAGE']
21:17:04.884374 common-main.c:48 | d2 | version | | | | 2.28.0.windows.1
21:17:04.884374 common-main.c:49 | d2 | start | | 0.037532 | | git-sh-i18n--envsubst 'usage: $dashless $USAGE'
21:17:04.906374 ..._win32_process_info.c:118 | d2 | data_json | r0 | 0.059654 | process | windows/ancestry:["git.exe","sh.exe","sh.exe","sh.exe","sh.exe","git.exe","git.exe","cmd.exe","pwsh.exe","WindowsTerminal.exe","(truncated)"]
21:17:04.907374 sh-i18n--envsubst.c:71 | d2 | cmd_name | | | | sh-i18n--envsubst (_run_dashed_/_run_dashed_/sh-i18n--envsubst)
21:17:04.907374 ..._win32_process_info.c:166 | d2 | data_json | r0 | 0.060129 | process | windows/memory:"PageFaultCount":9842,"PeakWorkingSetSize":7614464,"PeakPagefileUsage":3596288
21:17:04.907374 sh-i18n--envsubst.c:112 | d2 | exit | | 0.060156 | | code:0
21:17:04.907374 trace2/tr2_tgt_perf.c:213 | d2 | atexit | | 0.060171 | | code:0
21:17:04.909410 run-command.c:990 | d1 | child_exit | | 0.151444 | | [ch0] pid:19968 code:0
21:17:04.910465 ..._win32_process_info.c:166 | d1 | data_json | r0 | 0.151876 | process | windows/memory:"PageFaultCount":9505,"PeakWorkingSetSize":7655424,"PeakPagefileUsage":3694592
21:17:04.910465 git.c:720 | d1 | exit | | 0.151945 | | code:0
21:17:04.910465 trace2/tr2_tgt_perf.c:213 | d1 | atexit | | 0.151989 | | code:0
21:17:15.186324 common-main.c:48 | d1 | version | | | | 2.28.0.windows.1
21:17:15.187272 common-main.c:49 | d1 | start | | 0.034928 | | 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' rev-parse --git-dir
21:17:15.208271 ..._win32_process_info.c:118 | d1 | data_json | r0 | 0.055569 | process | windows/ancestry:["sh.exe","sh.exe","sh.exe","git.exe","git.exe","cmd.exe","pwsh.exe","WindowsTerminal.exe","explorer.exe"]
21:17:15.208271 git.c:445 | d1 | cmd_name | | | | rev-parse (_run_dashed_/rev-parse)
21:17:15.209664 repository.c:134 | d1 | def_repo | r1 | | | worktree:C:/work/repos/test/api-template
21:17:15.210099 ..._win32_process_info.c:166 | d1 | data_json | r1 | 0.057842 | process | windows/memory:"PageFaultCount":9505,"PeakWorkingSetSize":7639040,"PeakPagefileUsage":3690496
21:17:15.210099 git.c:675 | d1 | exit | | 0.057867 | | code:0
21:17:15.211106 trace2/tr2_tgt_perf.c:213 | d1 | atexit | | 0.057883 | | code:0
21:17:21.377950 common-main.c:48 | d1 | version | | | | 2.28.0.windows.1
21:17:21.378952 common-main.c:49 | d1 | start | | 0.035100 | | 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' rev-parse --git-path objects
21:17:21.401951 ..._win32_process_info.c:118 | d1 | data_json | r0 | 0.058018 | process | windows/ancestry:["sh.exe","sh.exe","sh.exe","git.exe","git.exe","cmd.exe","pwsh.exe","WindowsTerminal.exe","explorer.exe"]
21:17:21.401951 git.c:445 | d1 | cmd_name | | | | rev-parse (_run_dashed_/rev-parse)
21:17:21.402950 repository.c:134 | d1 | def_repo | r1 | | | worktree:C:/work/repos/test/api-template
21:17:21.403950 ..._win32_process_info.c:166 | d1 | data_json | r1 | 0.060304 | process | windows/memory:"PageFaultCount":9505,"PeakWorkingSetSize":7643136,"PeakPagefileUsage":3694592
21:17:21.403950 git.c:675 | d1 | exit | | 0.060327 | | code:0
21:17:21.403950 trace2/tr2_tgt_perf.c:213 | d1 | atexit | | 0.060339 | | code:0
21:17:25.560719 common-main.c:48 | d1 | version | | | | 2.28.0.windows.1
21:17:25.560719 common-main.c:49 | d1 | start | | 0.036064 | | 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' rev-parse -q --git-dir
21:17:25.581725 ..._win32_process_info.c:118 | d1 | data_json | r0 | 0.056848 | process | windows/ancestry:["sh.exe","sh.exe","sh.exe","git.exe","git.exe","cmd.exe","pwsh.exe","WindowsTerminal.exe","explorer.exe"]
21:17:25.581725 git.c:445 | d1 | cmd_name | | | | rev-parse (_run_dashed_/rev-parse)
21:17:25.582726 repository.c:134 | d1 | def_repo | r1 | | | worktree:C:/work/repos/test/api-template
21:17:25.583726 ..._win32_process_info.c:166 | d1 | data_json | r1 | 0.059098 | process | windows/memory:"PageFaultCount":9507,"PeakWorkingSetSize":7647232,"PeakPagefileUsage":3694592
21:17:25.583726 git.c:675 | d1 | exit | | 0.059122 | | code:0
21:17:25.583726 trace2/tr2_tgt_perf.c:213 | d1 | atexit | | 0.059133 | | code:0
21:17:29.712244 common-main.c:48 | d1 | version | | | | 2.28.0.windows.1
21:17:29.712244 common-main.c:49 | d1 | start | | 0.033477 | | 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' rev-parse --is-inside-work-tree
21:17:29.733278 ..._win32_process_info.c:118 | d1 | data_json | r0 | 0.054172 | process | windows/ancestry:["sh.exe","sh.exe","sh.exe","git.exe","git.exe","cmd.exe","pwsh.exe","WindowsTerminal.exe","explorer.exe"]
21:17:29.733278 git.c:445 | d1 | cmd_name | | | | rev-parse (_run_dashed_/rev-parse)
21:17:29.734278 repository.c:134 | d1 | def_repo | r1 | | | worktree:C:/work/repos/test/api-template
21:17:29.735842 ..._win32_process_info.c:166 | d1 | data_json | r1 | 0.056295 | process | windows/memory:"PageFaultCount":9488,"PeakWorkingSetSize":7573504,"PeakPagefileUsage":3657728
21:17:29.735842 git.c:675 | d1 | exit | | 0.056318 | | code:0
21:17:29.735842 trace2/tr2_tgt_perf.c:213 | d1 | atexit | | 0.056330 | | code:0
21:17:31.830544 common-main.c:48 | d1 | version | | | | 2.28.0.windows.1
21:17:31.831594 common-main.c:49 | d1 | start | | 0.036763 | | 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' rev-parse --show-prefix
21:17:31.849588 ..._win32_process_info.c:118 | d1 | data_json | r0 | 0.055489 | process | windows/ancestry:["sh.exe","sh.exe","git.exe","git.exe","cmd.exe","pwsh.exe","WindowsTerminal.exe","explorer.exe"]
21:17:31.850579 git.c:445 | d1 | cmd_name | | | | rev-parse (_run_dashed_/rev-parse)
21:17:31.851475 repository.c:134 | d1 | def_repo | r1 | | | worktree:C:/work/repos/test/api-template
21:17:31.852166 ..._win32_process_info.c:166 | d1 | data_json | r1 | 0.057811 | process | windows/memory:"PageFaultCount":8766,"PeakWorkingSetSize":7634944,"PeakPagefileUsage":3690496
21:17:31.852166 git.c:675 | d1 | exit | | 0.057834 | | code:0
21:17:31.852166 trace2/tr2_tgt_perf.c:213 | d1 | atexit | | 0.057846 | | code:0
21:17:33.965947 common-main.c:48 | d1 | version | | | | 2.28.0.windows.1
21:17:33.965947 common-main.c:49 | d1 | start | | 0.037985 | | 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' rev-parse --show-toplevel
21:17:33.984986 ..._win32_process_info.c:118 | d1 | data_json | r0 | 0.056903 | process | windows/ancestry:["sh.exe","sh.exe","git.exe","git.exe","cmd.exe","pwsh.exe","WindowsTerminal.exe","explorer.exe"]
21:17:33.984986 git.c:445 | d1 | cmd_name | | | | rev-parse (_run_dashed_/rev-parse)
21:17:33.986529 repository.c:134 | d1 | def_repo | r1 | | | worktree:C:/work/repos/test/api-template
21:17:33.986904 ..._win32_process_info.c:166 | d1 | data_json | r1 | 0.059073 | process | windows/memory:"PageFaultCount":8761,"PeakWorkingSetSize":7634944,"PeakPagefileUsage":3694592
21:17:33.986904 git.c:675 | d1 | exit | | 0.059096 | | code:0
21:17:33.987913 trace2/tr2_tgt_perf.c:213 | d1 | atexit | | 0.059111 | | code:0
21:17:46.255798 common-main.c:48 | d1 | version | | | | 2.28.0.windows.1
21:17:46.255798 common-main.c:49 | d1 | start | | 0.036220 | | 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' submodule--helper update-clone --
21:17:46.275839 ..._win32_process_info.c:118 | d1 | data_json | r0 | 0.056313 | process | windows/ancestry:["sh.exe","sh.exe","sh.exe","git.exe","git.exe","cmd.exe","pwsh.exe","WindowsTerminal.exe","explorer.exe"]
21:17:46.277436 repository.c:134 | d1 | def_repo | r1 | | | worktree:C:/work/repos/test/api-template
21:17:46.277436 git.c:445 | d1 | cmd_name | | | | submodule--helper (_run_dashed_/submodule--helper)
21:17:46.279459 read-cache.c:2315 | d1 | region_enter | r1 | 0.059520 | index | label:do_read_index .git/index
21:17:46.279459 read-cache.c:2275 | d1 | data | r1 | 0.059771 | index | ..read/version:2
21:17:46.279459 read-cache.c:2277 | d1 | data | r1 | 0.059807 | index | ..read/cache_nr:89
21:17:46.279459 read-cache.c:2320 | d1 | region_leave | r1 | 0.059821 | index | label:do_read_index .git/index
21:17:46.279459 run-command.c:1858 | d1 | region_enter | | 0.059842 | submodule | label:parallel/update max:1
21:17:46.280443 run-command.c:1864 | d1 | region_leave | | 0.060144 | submodule | label:parallel/update
21:17:46.280443 ..._win32_process_info.c:166 | d1 | data_json | r1 | 0.060496 | process | windows/memory:"PageFaultCount":9550,"PeakWorkingSetSize":7655424,"PeakPagefileUsage":3706880
21:17:46.280443 git.c:675 | d1 | exit | | 0.060519 | | code:0
21:17:46.280443 trace2/tr2_tgt_perf.c:213 | d1 | atexit | | 0.060531 | | code:0
21:17:48.385295 common-main.c:48 | d1 | version | | | | 2.28.0.windows.1
21:17:48.386329 common-main.c:49 | d1 | start | | 0.034577 | | 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' submodule--helper ensure-core-worktree api-configs
21:17:48.408296 ..._win32_process_info.c:118 | d1 | data_json | r0 | 0.057052 | process | windows/ancestry:["sh.exe","sh.exe","sh.exe","git.exe","git.exe","cmd.exe","pwsh.exe","WindowsTerminal.exe","explorer.exe"]
21:17:48.410313 repository.c:134 | d1 | def_repo | r1 | | | worktree:C:/work/repos/test/api-template
21:17:48.411294 git.c:445 | d1 | cmd_name | | | | submodule--helper (_run_dashed_/submodule--helper)
21:17:48.412306 read-cache.c:2315 | d1 | region_enter | r1 | 0.060851 | index | label:do_read_index .git/index
21:17:48.412306 read-cache.c:2275 | d1 | data | r1 | 0.061108 | index | ..read/version:2
21:17:48.412306 read-cache.c:2277 | d1 | data | r1 | 0.061128 | index | ..read/cache_nr:89
21:17:48.412306 read-cache.c:2320 | d1 | region_leave | r1 | 0.061143 | index | label:do_read_index .git/index
21:17:48.414294 repository.c:134 | d1 | def_repo | r2 | | | worktree:C:/work/repos/test/api-template/api-configs
21:17:48.415807 ..._win32_process_info.c:166 | d1 | data_json | r1 | 0.064903 | process | windows/memory:"PageFaultCount":9546,"PeakWorkingSetSize":7639040,"PeakPagefileUsage":3694592
21:17:48.415807 git.c:675 | d1 | exit | | 0.064926 | | code:0
21:17:48.416807 trace2/tr2_tgt_perf.c:213 | d1 | atexit | | 0.064941 | | code:0
21:17:50.520402 common-main.c:48 | d1 | version | | | | 2.28.0.windows.1
21:17:50.520402 common-main.c:49 | d1 | start | | 0.034157 | | 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' submodule--helper update-module-mode 0 api-configs
21:17:50.541436 ..._win32_process_info.c:118 | d1 | data_json | r0 | 0.054575 | process | windows/ancestry:["sh.exe","sh.exe","sh.exe","git.exe","git.exe","cmd.exe","pwsh.exe","WindowsTerminal.exe","explorer.exe"]
21:17:50.542528 repository.c:134 | d1 | def_repo | r1 | | | worktree:C:/work/repos/test/api-template
21:17:50.542923 git.c:445 | d1 | cmd_name | | | | submodule--helper (_run_dashed_/submodule--helper)
21:17:50.543931 read-cache.c:2315 | d1 | region_enter | r1 | 0.056926 | index | label:do_read_index .git/index
21:17:50.543931 read-cache.c:2275 | d1 | data | r1 | 0.057075 | index | ..read/version:2
21:17:50.543931 read-cache.c:2277 | d1 | data | r1 | 0.057095 | index | ..read/cache_nr:89
21:17:50.543931 read-cache.c:2320 | d1 | region_leave | r1 | 0.057108 | index | label:do_read_index .git/index
21:17:50.543931 ..._win32_process_info.c:166 | d1 | data_json | r1 | 0.057631 | process | windows/memory:"PageFaultCount":9527,"PeakWorkingSetSize":7634944,"PeakPagefileUsage":3682304
21:17:50.543931 git.c:675 | d1 | exit | | 0.057655 | | code:0
21:17:50.543931 trace2/tr2_tgt_perf.c:213 | d1 | atexit | | 0.057689 | | code:0
21:17:52.636205 common-main.c:48 | d1 | version | | | | 2.28.0.windows.1
21:17:52.637203 common-main.c:49 | d1 | start | | 0.037411 | | 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' submodule--helper relative-path api-configs ''
21:17:52.658176 ..._win32_process_info.c:118 | d1 | data_json | r0 | 0.059121 | process | windows/ancestry:["sh.exe","sh.exe","sh.exe","git.exe","git.exe","cmd.exe","pwsh.exe","WindowsTerminal.exe","explorer.exe"]
21:17:52.659209 repository.c:134 | d1 | def_repo | r1 | | | worktree:C:/work/repos/test/api-template
21:17:52.660211 git.c:445 | d1 | cmd_name | | | | submodule--helper (_run_dashed_/submodule--helper)
21:17:52.661210 ..._win32_process_info.c:166 | d1 | data_json | r1 | 0.061740 | process | windows/memory:"PageFaultCount":9494,"PeakWorkingSetSize":7639040,"PeakPagefileUsage":3686400
21:17:52.661210 git.c:675 | d1 | exit | | 0.061763 | | code:0
21:17:52.661210 trace2/tr2_tgt_perf.c:213 | d1 | atexit | | 0.061775 | | code:0
21:17:58.826520 common-main.c:48 | d1 | version | | | | 2.28.0.windows.1
21:17:58.827518 common-main.c:49 | d1 | start | | 0.033724 | | 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' rev-parse --local-env-vars
21:17:58.850518 ..._win32_process_info.c:118 | d1 | data_json | r0 | 0.057204 | process | windows/ancestry:["sh.exe","sh.exe","sh.exe","sh.exe","sh.exe","git.exe","git.exe","cmd.exe","pwsh.exe","WindowsTerminal.exe","(truncated)"]
21:17:58.850518 git.c:445 | d1 | cmd_name | | | | rev-parse (_run_dashed_/rev-parse)
21:17:58.850518 ..._win32_process_info.c:166 | d1 | data_json | r0 | 0.057584 | process | windows/memory:"PageFaultCount":9842,"PeakWorkingSetSize":7647232,"PeakPagefileUsage":3694592
21:17:58.850518 git.c:675 | d1 | exit | | 0.057607 | | code:0
21:17:58.850518 trace2/tr2_tgt_perf.c:213 | d1 | atexit | | 0.057619 | | code:0
21:18:00.947362 common-main.c:48 | d1 | version | | | | 2.28.0.windows.1
21:18:00.948397 common-main.c:49 | d1 | start | | 0.036498 | | 'C:\Program Files\Git\mingw64\libexec\git-core\git.exe' rev-parse --verify HEAD
21:18:00.968407 ..._win32_process_info.c:118 | d1 | data_json | r0 | 0.056906 | process | windows/ancestry:["sh.exe","sh.exe","sh.exe","sh.exe","git.exe","git.exe","cmd.exe","pwsh.exe","WindowsTerminal.exe","explorer.exe","(truncated)"]
21:18:00.968407 git.c:445 | d1 | cmd_name | | | | rev-parse (_run_dashed_/rev-parse)
21:18:00.970614 repository.c:134 | d1 | def_repo | r1 | | | worktree:C:/work/repos/test/api-template/api-configs
21:18:00.972622 ..._win32_process_info.c:166 | d1 | data_json | r1 | 0.060950 | process | windows/memory:"PageFaultCount":9506,"PeakWorkingSetSize":7634944,"PeakPagefileUsage":3682304
21:18:00.972622 git.c:675 | d1 | exit | | 0.060976 | | code:0
21:18:00.972622 trace2/tr2_tgt_perf.c:213 | d1 | atexit | | 0.060989 | | code:0
21:18:00.982622 run-command.c:990 | d0 | child_exit | | 91.261384 | | [ch0] pid:19900 code:0
21:18:00.982622 ..._win32_process_info.c:166 | d0 | data_json | r0 | 91.261700 | process | windows/memory:"PageFaultCount":6578,"PeakWorkingSetSize":7618560,"PeakPagefileUsage":3678208
21:18:00.982622 git.c:720 | d0 | exit | | 91.261723 | | code:0
21:18:00.982622 trace2/tr2_tgt_perf.c:213 | d0 | atexit | | 91.261737 | | code:0
我不知道该怎么做。有人遇到过类似的事情并有解决办法吗？有关如何解决它的任何建议？
有时它会输出错误但无论如何操作都会成功，例如
❯ git submodule update
0 [main] sh 2038 child_info::sync: wait failed, pid 18572, Win32 error 0
997 [main] sh 2038 dofork: child -1 - forked process 18572 died unexpectedly, retry 0, exit code 0x8, errno 11
C:/Program Files/Git/mingw64/libexec/git-core\git-submodule: fork: retry: Resource temporarily unavailable
Cloning into 'C:/work/repos/test/api-template/api-configs'...
Submodule path 'api-configs': checked out '1a61134f804c0bd2d6f8a7ccf848136f7bf02309'
如果我在 WSL 中运行相同的命令，它们几乎会立即运行。 我的一些同事报告了同样的问题。他们说 Windows 重新启动通常会提供暂时的缓解。对我来说没有任何帮助。
Windows 10
❯ git version
git version 2.28.0.windows.1
WSL 2 (Ubuntu 18.04)
$ git version
git version 2.28.0
【问题讨论】：
更新到 git 2.29 并且它的工作时间一样长。 这通常是由系统上的防病毒或安全软件引起的。尝试完全卸载该软件并重新启动。 Windows Defender 不应导致此问题。 我们的系统由我们的管理员管理。没有机会修改任何安全内容。再一次，git clone 在 Win 上的两个 repos 上都能快速运行。 git submodule update 本质上是 git clone。这些命令会立即在 WSL 上运行，WSL 是同一个 Windows 会话的一部分，并且必须通过同一个网络。
【参考方案1】：
git submodule 主要用 shell 编写。 Shell 脚本通过 fork 和执行大量进程来工作，这在 Windows 上很慢，因为 Windows 没有一种有效的方法来 fork 进程。
如果您有任何进程（例如防病毒软件或其他安全软件）使这些操作变慢，那么，它们会变得更慢。其中一些进程还会窥探每个网络连接并对其进行检查，从而导致网络连接变慢。
您看不到 WSL 2 的速度下降，因为 WSL 2 本质上是一个运行真正 Linux 内核的虚拟机。因此，它在分叉和执行进程方面非常快，并且通常不会受到 Windows 防病毒或安全软件的窥探或拦截。
我的建议是完全卸载任何第三方防病毒或安全软件，重新启动，然后改用 Windows Defender 和 Windows 防火墙。第三方防病毒软件经常将代码注入每个进程，通过将每个进程暴露于同一组不安全代码，从而大大削弱了安全性。此外，它经常破坏沙盒技术，这些技术可用于防止 Chrome 等软件中的漏洞利用。如果这不可行，那么您可能不得不接受这样一个事实，即在 Windows 上性能不会很好。
【讨论】：
作为一项测试，我们禁用了所有我们可以禁用的东西（防火墙、Windows Defender、Webroot，这是我们的防病毒软件），它仍在运行 ~2 分钟。可能还有其他安全流程，但可能需要永远追查所有流程。 但有趣的是，一台配备 i9 和 32 Gb RAM 的机器，可以立即运行其他所有内容，在一些简单的 CLI 命令上会阻塞并冻结几分钟（！），需要拉20kb 的文本。【参考方案2】：解决方法。
对于具有pwsh core 用户和WSL 2 启用的Windows Terminal，您可以将以下函数添加到您的Microsoft.PowerShell_profile.ps1。它通常位于C:\Users\<user_name>\Documents\PowerShell。
function git()
if ($args[0] -eq 'submodule')
wsl git $args
else
git.exe $args
在 CMD 或任何其他终端中运行任何带有 wsl 前缀的 submodule 命令：
wsl git submodule update
【讨论】：
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