PVE虚拟机一次磁盘IO异常的排查解决

Sun, 31 May 2026 02:00:00 +0800

1. 背景

我日常一直是使用一张 RTX 2060 Super 直通的 Windows 11 虚拟机作为我家里日常的主力机器，用来 Coding (ssh Ubuntu)、Gaming (英雄联盟)、以及一些观影（自建 Jellyfin），显示器是小米的 4K，这台虚拟机作为日常机器还是挺稳定的，平时也不用关机，完全能胜任我的日常任务，除了 Windows 本身的原因，长时间不关机会出现一些莫名的 BUG 之外都挺好，直到前段时间我把它玩坏了。

事情的起因我已经记不清了，是一个极小的问题让我需要更新 Windows，因为我这个版本的 Windows 11 实在太老了，大概是 2022 年的版本：22H2，但致命的问题是我的 Windows 是下载的国外大神精简版的，为了极致的优化砍了很多组件，这些精简版为了稳定往往会禁用 Windows 的更新，就怕小白去更新之后黑屏打不开，而我成了那个小白，原因是我在另一台安装了同样系统的物理机上成功更新过一次，那次成功应是侥幸，那次的版本跨度没有很高，可以看作是一次小更新，而这次我直接死在了第一个补丁，安装了这个补丁之后直接黑屏无法启动，毫无疑问需要修复了，精简系统无恢复环境，只能靠 Windows PE 救一救，进了 PE 之后看到这个补丁已经固化，即已经替换掉了系统的一些文件，无法进行恢复，照着 Gemini 给的一些方案试了一下最终还是不行。万幸的是我的代码已经提交到自建 Gitea，我的重要文件是实时 Nextcloud 同步，唯一遗憾的是我做空投任务的时候启动的几个 Chrome 的 Profile 文件夹，里面有一些用来撸毛账号的 Cookie 没有备份，其实吧虚拟机是可以每天备份的，但我为了玩 Steam 把磁盘扩到了 500 G，剩余空间完全不够装下这么大的备份，所以就不了了之了，好在撸毛的钱包是有私钥备份的，况且撸毛次次反撸，我已经不抱希望能领取大毛了，于是连磁盘也懒得拷贝，直接重装算了。

2. 重装 Win 11

这次重装我还是选择了 22H2，不为其他，只因下载了一个新的26H1 的镜像居然安装失败了，所以还是稳定的慢慢升级吧。

下面是我的 Windows 11 虚拟机的硬件图

初看是没问题的是吧，安装很顺利，也成功升级到了 23H2，但是使用起来总有点怪怪。

3. 异常情况

3.1 游戏

首先是游戏莫名的卡顿，我这个配置在以前玩 LOL 是没什么问题的，4K 分辨率中画质完全能应付，但是我即使调到低画质还是会莫名的掉帧，CPU 负载打开游戏就开始飙升到百分之八十多

3.2 starship

真正让我确认有问题的是 starship , 这是一个终端 prompt 工具，用于在终端显示 git 状态，nodejs 版本之类的，内部集成了大量的编程语言运行环境检测，我是用来和 nushell 配合使用，Nushell 是 Rust 开发的跨平台 Shell, 它性能极好，设计优雅，是我在 Windows 下 shell 的不二之选，这次的异常情况就是在任意一个 git 目录下执行 ls 命令的时候，starship 的 prompt 总是慢半拍才能显示出来，体感在 500 ms 左右，这是很反常的，因为我在公司的电脑同样的 ls 命令 starship 响应体验是很快的，体感在 100 多 ms，我不禁怀疑起了 starship 是否有问题。

4. 开始排查

好在 starship 提供详细的日志供调试，在 Nushell 下设置一下环境变量即可：

$env.STARSHIP_LOG = "trace"

在任意git目录下的详细日志，已经舍去其他杂音，只留下加载时间：

[TRACE] - (starship::modules): Took 18.3062ms to compute module "pijul_channel"
[TRACE] - (starship::modules): Took 17.505ms to compute module "nats"
[TRACE] - (starship::modules): Took 17.746ms to compute module "cpp"
[TRACE] - (starship::modules): Took 17.4448ms to compute module "hg_branch"
[TRACE] - (starship::modules): Took 33.8159ms to compute module "odin"
[TRACE] - (starship::modules): Took 17.7322ms to compute module "username"
[TRACE] - (starship::modules): Took 14.7262ms to compute module "pixi"
[TRACE] - (starship::modules): Took 15.0693ms to compute module "git_metrics"
[TRACE] - (starship::modules): Took 1.4938ms to compute module "hg_state"
[TRACE] - (starship::modules): Took 17.8735ms to compute module "docker_context"
[TRACE] - (starship::modules): Took 18.5529ms to compute module "hostname"
[TRACE] - (starship::modules): Took 16.166ms to compute module "opa"
[TRACE] - (starship::modules): Took 15.623ms to compute module "daml"
[TRACE] - (starship::modules): Took 16.2233ms to compute module "fossil_branch"
[TRACE] - (starship::modules): Took 15.1224ms to compute module "localip"
[TRACE] - (starship::modules): Took 2.3825ms to compute module "perl"
[TRACE] - (starship::modules): Took 15.1989ms to compute module "bun"
[TRACE] - (starship::modules): Took 29.0678ms to compute module "fossil_metrics"
[TRACE] - (starship::modules): Took 17.8275ms to compute module "rust"
[TRACE] - (starship::modules): Took 16.9605ms to compute module "shlvl"
[TRACE] - (starship::modules): Took 17.2842ms to compute module "python"
[TRACE] - (starship::modules): Took 16.9597ms to compute module "memory_usage"
[TRACE] - (starship::modules): Took 47.9592ms to compute module "dart"
[TRACE] - (starship::modules): Took 18.5844ms to compute module "scala"
[TRACE] - (starship::modules): Took 19.0209ms to compute module "php"
[TRACE] - (starship::modules): Took 20.7344ms to compute module "c"
[TRACE] - (starship::modules): Took 16.4049ms to compute module "quarto"
[TRACE] - (starship::modules): Took 2.4443ms to compute module "kubernetes"
[TRACE] - (starship::modules): Took 20.0147ms to compute module "deno"
[TRACE] - (starship::modules): Took 18.8966ms to compute module "solidity"
[TRACE] - (starship::modules): Took 17.4583ms to compute module "cmake"
[TRACE] - (starship::modules): Took 17.3312ms to compute module "openstack"
[TRACE] - (starship::modules): Took 15.9276ms to compute module "purescript"
[TRACE] - (starship::modules): Took 16.5826ms to compute module "raku"
[TRACE] - (starship::modules): Took 18.8865ms to compute module "gradle"
[TRACE] - (starship::modules): Took 17.4403ms to compute module "dotnet"
[TRACE] - (starship::modules): Took 16.2543ms to compute module "swift"
[TRACE] - (starship::modules): Took 18.1222ms to compute module "azure"
[TRACE] - (starship::modules): Took 16.8151ms to compute module "cobol"
[TRACE] - (starship::modules): Took 33.1375ms to compute module "rlang"
[TRACE] - (starship::modules): Took 17.1506ms to compute module "elm"
[TRACE] - (starship::modules): Took 18.019ms to compute module "haskell"
[TRACE] - (starship::modules): Took 16.4837ms to compute module "terraform"
[TRACE] - (starship::modules): Took 25.0324ms to compute module "elixir"
[TRACE] - (starship::modules): Took 16.7054ms to compute module "direnv"
[TRACE] - (starship::modules): Took 19.2445ms to compute module "sudo"
[TRACE] - (starship::modules): Took 20.1962ms to compute module "red"
[TRACE] - (starship::modules): Took 280.4748ms to compute module "git_branch"
[TRACE] - (starship::modules): Took 19.7518ms to compute module "erlang"
[TRACE] - (starship::modules): Took 19.5443ms to compute module "haxe"
[TRACE] - (starship::modules): Took 18.5698ms to compute module "typst"
[TRACE] - (starship::modules): Took 17.3636ms to compute module "env_var"
[TRACE] - (starship::modules): Took 16.9152ms to compute module "kotlin"
[TRACE] - (starship::modules): Took 2.5295ms to compute module "vlang"
[TRACE] - (starship::modules): Took 19.6208ms to compute module "ruby"
[TRACE] - (starship::modules): Took 18.6619ms to compute module "zig"
[TRACE] - (starship::modules): Took 36.1428ms to compute module "cmd_duration"
[TRACE] - (starship::modules): Took 19.5368ms to compute module "helm"
[TRACE] - (starship::modules): Took 17.5727ms to compute module "vagrant"
[TRACE] - (starship::modules): Took 18.321ms to compute module "mise"
[TRACE] - (starship::modules): Took 33.962ms to compute module "fennel"
[TRACE] - (starship::modules): Took 17.4341ms to compute module "lua"
[TRACE] - (starship::modules): Took 1.585ms to compute module "line_break"
[TRACE] - (starship::modules): Took 17.5436ms to compute module "crystal"
[TRACE] - (starship::modules): Took 20.7769ms to compute module "java"
[TRACE] - (starship::modules): Took 19.8726ms to compute module "buf"
[TRACE] - (starship::modules): Took 19.44ms to compute module "fortran"
[TRACE] - (starship::modules): Took 19.7548ms to compute module "guix_shell"
[TRACE] - (starship::modules): Took 17.8847ms to compute module "xmake"
[TRACE] - (starship::modules): Took 17.9972ms to compute module "jobs"
[TRACE] - (starship::modules): Took 17.7127ms to compute module "maven"
[TRACE] - (starship::modules): Took 2.4656ms to compute module "julia"
[TRACE] - (starship::modules): Took 26.8797ms to compute module "mojo"
[TRACE] - (starship::modules): Took 21.4463ms to compute module "gleam"
[TRACE] - (starship::modules): Took 2.9202ms to compute module "battery"
[TRACE] - (starship::modules): Took 20.1832ms to compute module "nix_shell"
[TRACE] - (starship::modules): Took 23.8637ms to compute module "nim"
[TRACE] - (starship::modules): Took 16.0568ms to compute module "time"
[TRACE] - (starship::modules): Took 16.825ms to compute module "golang"
[TRACE] - (starship::modules): Took 32.403ms to compute module "ocaml"
[TRACE] - (starship::modules): Took 85.444ms to compute module "shell"
[TRACE] - (starship::modules): Took 80.4897ms to compute module "status"
[TRACE] - (starship::modules): Took 83.2728ms to compute module "os"
[TRACE] - (starship::modules): Took 159.0895ms to compute module "character"

同样在公司机器上也测一测

➜ open tmp\starship-1.log
[TRACE] - (starship::modules): Took 5.7994ms to compute module "vlang"
[TRACE] - (starship::modules): Took 7.4286ms to compute module "username"
[TRACE] - (starship::modules): Took 4.3847ms to compute module "rust"
[TRACE] - (starship::modules): Took 8.69ms to compute module "opa"
[TRACE] - (starship::modules): Took 5.5902ms to compute module "guix_shell"
[TRACE] - (starship::modules): Took 16.9084ms to compute module "hostname"
[TRACE] - (starship::modules): Took 5.6574ms to compute module "php"
[TRACE] - (starship::modules): Took 4.5768ms to compute module "memory_usage"
[TRACE] - (starship::modules): Took 1.0898ms to compute module "cobol"
[TRACE] - (starship::modules): Took 17.9987ms to compute module "python"
[TRACE] - (starship::modules): Took 6.7587ms to compute module "localip"
[TRACE] - (starship::modules): Took 6.7914ms to compute module "swift"
[TRACE] - (starship::modules): Took 5.7805ms to compute module "terraform"
[TRACE] - (starship::modules): Took 5.4692ms to compute module "daml"
[TRACE] - (starship::modules): Took 10.6374ms to compute module "shlvl"
[TRACE] - (starship::modules): Took 5.5323ms to compute module "raku"
[TRACE] - (starship::modules): Took 15.6917ms to compute module "gradle"
[TRACE] - (starship::modules): Took 34.5668ms to compute module "gcloud"
[TRACE] - (starship::modules): Took 49.7071ms to compute module "git_branch"
[TRACE] - (starship::modules): Took 6.4357ms to compute module "dart"
[TRACE] - (starship::modules): Took 6.1071ms to compute module "openstack"
[TRACE] - (starship::modules): Took 5.1708ms to compute module "erlang"
[TRACE] - (starship::modules): Took 4.9006ms to compute module "kubernetes"
[TRACE] - (starship::modules): Took 16.7163ms to compute module "rlang"
[TRACE] - (starship::modules): Took 5.912ms to compute module "direnv"
[TRACE] - (starship::modules): Took 13.8326ms to compute module "helm"
[TRACE] - (starship::modules): Took 6.0494ms to compute module "dotnet"
[TRACE] - (starship::modules): Took 85.5848ms to compute module "pulumi"
[TRACE] - (starship::modules): Took 9.669ms to compute module "kotlin"
[TRACE] - (starship::modules): Took 6.7169ms to compute module "time"
[TRACE] - (starship::modules): Took 7.5859ms to compute module "cmd_duration"
[TRACE] - (starship::modules): Took 6.7803ms to compute module "lua"
[TRACE] - (starship::modules): Took 13.5457ms to compute module "git_commit"
[TRACE] - (starship::modules): Took 17.2346ms to compute module "deno"
[TRACE] - (starship::modules): Took 9.7572ms to compute module "line_break"
[TRACE] - (starship::modules): Took 33.0256ms to compute module "directory"
[TRACE] - (starship::modules): Took 4.2482ms to compute module "fossil_branch"
[TRACE] - (starship::modules): Took 4.302ms to compute module "nim"
[TRACE] - (starship::modules): Took 1.0841ms to compute module "fossil_metrics"
[TRACE] - (starship::modules): Took 5.3851ms to compute module "nodejs"
[TRACE] - (starship::modules): Took 36.5341ms to compute module "red"
[TRACE] - (starship::modules): Took 5.3772ms to compute module "os"
[TRACE] - (starship::modules): Took 5.3431ms to compute module "jobs"
[TRACE] - (starship::modules): Took 6.672ms to compute module "ocaml"
[TRACE] - (starship::modules): Took 5.2113ms to compute module "git_metrics"
[TRACE] - (starship::modules): Took 5.0682ms to compute module "git_state"
[TRACE] - (starship::modules): Took 5.3172ms to compute module "odin"
[TRACE] - (starship::modules): Took 6.8135ms to compute module "shell"
[TRACE] - (starship::modules): Took 6.7616ms to compute module "hg_branch"
[TRACE] - (starship::modules): Took 25.748ms to compute module "battery"
[TRACE] - (starship::modules): Took 21.8025ms to compute module "character"
[TRACE] - (starship::utils): stdout: "# branch.oid 2e0893e49032c5d0cfb2a56f720d7356f7e23685\n# branch.head main\n# branch.upstream origin/main\n# branch.ab +0 -0\n", stderr: "", exit code: "Some(0)", took 50.7518ms
[TRACE] - (starship::modules): Took 99.5484ms to compute module "git_status"

我发现公司机器上的加载时间都很小，尤其是稍微耗时的 git 相关模块，联想到 git 需要读取文件，涉及到磁盘 IO，于是我打开 Gemini 询问了磁盘测试的工具，Gemini 推荐了一个微软官方发布的小工具用来测试:

diskspd -c1G -d60 -r -w40 -t4 -o32 -b4K -Sh -L c:\testfile.dat

测试结果：


Input parameters:

        timespan:   1
        -------------
        duration: 60s
        warm up time: 5s
        cool down time: 0s
        measuring latency
        random seed: 0
        path: 'c:\testfile.dat'
                think time: 0ms
                burst size: 0
                software cache disabled
                hardware write cache disabled, writethrough on
                performing mix test (read/write ratio: 60/40)
                block size: 4KiB
                using random I/O (alignment: 4KiB)
                number of outstanding I/O operations per thread: 32
                threads per file: 4
                using I/O Completion Ports
                IO priority: normal

System information:

        computer name: DESKTOP-61E3A0U
        start time: 2026/05/30 04:38:55 UTC

        cpu count:              10
        core count:             10
        group count:            1
        node count:             1
        socket count:           1
        heterogeneous cores:    n

        active power scheme:    骞宠　 (381b4222-f694-41f0-9685-ff5bb260df2e)

Results for timespan 1:
*******************************************************************************

actual test time:       60.01s
thread count:           4

CPU |  Usage |  User  | Kernel |  Idle
----------------------------------------
   0|  94.14%|   5.78%|  88.36%|   5.86%
   1|  98.49%|   7.89%|  90.60%|   1.51%
   2|  94.69%|   5.02%|  89.66%|   5.31%
   3|  94.04%|   4.76%|  89.27%|   5.96%
   4|  43.72%|  25.86%|  17.86%|  56.28%
   5|  37.18%|  21.37%|  15.80%|  62.82%
   6|  37.10%|  19.08%|  18.02%|  62.90%
   7|  31.87%|  18.56%|  13.30%|  68.13%
   8|  95.49%|  11.09%|  84.40%|   4.51%
   9|  37.92%|  19.32%|  18.59%|  62.08%
----------------------------------------
avg.|  66.46%|  13.88%|  52.59%|  33.54%

Total IO
thread |       bytes     |     I/Os     |    MiB/s   |  I/O per s |  AvgLat  | LatStdDev |  file
-----------------------------------------------------------------------------------------------------
     0 |      1582923776 |       386456 |      25.16 |    6440.19 |    1.162 |     2.720 | c:\testfile.dat (1GiB)
     1 |      1581031424 |       385994 |      25.13 |    6432.50 |    1.171 |     2.791 | c:\testfile.dat (1GiB)
     2 |      1667600384 |       407129 |      26.50 |    6784.70 |    1.126 |     2.753 | c:\testfile.dat (1GiB)
     3 |      1688813568 |       412308 |      26.84 |    6871.01 |    1.112 |     2.748 | c:\testfile.dat (1GiB)
-----------------------------------------------------------------------------------------------------
total:        6520369152 |      1591887 |     103.63 |   26528.41 |    1.142 |     2.753

Read IO
thread |       bytes     |     I/Os     |    MiB/s   |  I/O per s |  AvgLat  | LatStdDev |  file
-----------------------------------------------------------------------------------------------------
     0 |       950878208 |       232148 |      15.11 |    3868.69 |    1.224 |     2.730 | c:\testfile.dat (1GiB)
     1 |       950878208 |       232148 |      15.11 |    3868.69 |    1.238 |     2.849 | c:\testfile.dat (1GiB)
     2 |       999952384 |       244129 |      15.89 |    4068.35 |    1.186 |     2.764 | c:\testfile.dat (1GiB)
     3 |      1013227520 |       247370 |      16.10 |    4122.36 |    1.176 |     2.792 | c:\testfile.dat (1GiB)
-----------------------------------------------------------------------------------------------------
total:        3914936320 |       955795 |      62.22 |   15928.09 |    1.206 |     2.784

Write IO
thread |       bytes     |     I/Os     |    MiB/s   |  I/O per s |  AvgLat  | LatStdDev |  file
-----------------------------------------------------------------------------------------------------
     0 |       632045568 |       154308 |      10.04 |    2571.50 |    1.068 |     2.702 | c:\testfile.dat (1GiB)
     1 |       630153216 |       153846 |      10.01 |    2563.81 |    1.069 |     2.698 | c:\testfile.dat (1GiB)
     2 |       667648000 |       163000 |      10.61 |    2716.35 |    1.036 |     2.734 | c:\testfile.dat (1GiB)
     3 |       675586048 |       164938 |      10.74 |    2748.65 |    1.015 |     2.678 | c:\testfile.dat (1GiB)
-----------------------------------------------------------------------------------------------------
total:        2605432832 |       636092 |      41.41 |   10600.32 |    1.046 |     2.703

Total latency distribution:
  %-ile |  Read (ms) | Write (ms) | Total (ms)
----------------------------------------------
    min |      0.123 |      0.083 |      0.083
   25th |      0.283 |      0.194 |      0.242
   50th |      0.350 |      0.245 |      0.311
   75th |      0.536 |      0.336 |      0.456
   90th |      3.958 |      3.919 |      3.942
   95th |      4.635 |      4.592 |      4.617
   99th |     12.981 |     12.781 |     12.896
3-nines |     36.063 |     33.409 |     35.402
4-nines |     69.724 |     66.539 |     68.683
5-nines |     72.714 |     72.588 |     72.685
6-nines |     74.241 |     74.249 |     74.241
7-nines |     74.241 |     74.249 |     74.249
8-nines |     74.241 |     74.249 |     74.249
9-nines |     74.241 |     74.249 |     74.249
    max |     74.241 |     74.249 |     74.249

把结果让 Gemini 分析就一目了然了，其实我在测试的时候看资源管理器就已经发现了端倪，我测磁盘 IO 最高只能跑到 100M/s，即使是虚拟机有损耗这个结果也是很反常的，果然 Gemini 给出了诊断并给出了解决方案，原来是 虚拟磁盘使用Sata 总线的原因，不过话说回来我选择 Sata 总线这也是 Gemini 给的建议 🤣

5. 异常解决

既然已经有了解决方案，那我们就按照以上的步骤来解决吧，解决的时候有个坑，我第一张图的 SCSI 控制器是 Virtio SCSI，这个时候添加一块 SCSI 总线的硬盘是无效的，还是会添加成 SATA 总线的盘，因为只有 VirtIO SCSI single 控制器才支持多个总线，所以第一步添加 SCSI 盘让 windows 装驱动的这步我踩了坑，导致更改了系统盘为 SCSI 之后蓝屏了，后续知道了之后总算成功启动，下面再来测一测问题：

5.1 starship

首先是 starship, 同样测试一下：

[TRACE] - (starship::modules): Took 21.2983ms to compute module "odin"
[TRACE] - (starship::modules): Took 19.1956ms to compute module "python"
[TRACE] - (starship::modules): Took 31.5634ms to compute module "rlang"
[TRACE] - (starship::modules): Took 36.4878ms to compute module "username"
[TRACE] - (starship::modules): Took 23.9048ms to compute module "rust"
[TRACE] - (starship::modules): Took 16.5662ms to compute module "cpp"
[TRACE] - (starship::modules): Took 18.1202ms to compute module "pixi"
[TRACE] - (starship::modules): Took 17.81ms to compute module "hostname"
[TRACE] - (starship::modules): Took 17.3318ms to compute module "red"
[TRACE] - (starship::modules): Took 17.6097ms to compute module "opa"
[TRACE] - (starship::modules): Took 17.439ms to compute module "quarto"
[TRACE] - (starship::modules): Took 13.4106ms to compute module "daml"
[TRACE] - (starship::modules): Took 17.8897ms to compute module "scala"
[TRACE] - (starship::modules): Took 17.2203ms to compute module "raku"
[TRACE] - (starship::modules): Took 15.8997ms to compute module "perl"
[TRACE] - (starship::modules): Took 16.2383ms to compute module "shlvl"
[TRACE] - (starship::modules): Took 14.9016ms to compute module "dart"
[TRACE] - (starship::modules): Took 15.3076ms to compute module "solidity"
[TRACE] - (starship::modules): Took 30.2241ms to compute module "ruby"
[TRACE] - (starship::modules): Took 19.204ms to compute module "memory_usage"
[TRACE] - (starship::modules): Took 2.5528ms to compute module "swift"
[TRACE] - (starship::modules): Took 16.6836ms to compute module "php"
[TRACE] - (starship::modules): Took 15.8251ms to compute module "pijul_channel"
[TRACE] - (starship::modules): Took 18.0944ms to compute module "kubernetes"
[TRACE] - (starship::modules): Took 17.6829ms to compute module "deno"
[TRACE] - (starship::modules): Took 268.2773ms to compute module "git_commit"
[TRACE] - (starship::modules): Took 2.1399ms to compute module "nats"
[TRACE] - (starship::modules): Took 2.0977ms to compute module "vlang"
[TRACE] - (starship::modules): Took 17.9548ms to compute module "docker_context"
[TRACE] - (starship::modules): Took 18.3204ms to compute module "purescript"
[TRACE] - (starship::modules): Took 2.4789ms to compute module "terraform"
[TRACE] - (starship::modules): Took 47.3202ms to compute module "openstack"
[TRACE] - (starship::modules): Took 16.6641ms to compute module "git_state"
[TRACE] - (starship::modules): Took 16.8515ms to compute module "vagrant"
[TRACE] - (starship::modules): Took 47.4419ms to compute module "dotnet"
[TRACE] - (starship::modules): Took 19.1804ms to compute module "fossil_branch"
[TRACE] - (starship::modules): Took 16.8351ms to compute module "typst"
[TRACE] - (starship::modules): Took 32.1791ms to compute module "bun"
[TRACE] - (starship::modules): Took 18.3454ms to compute module "azure"
[TRACE] - (starship::modules): Took 19.6604ms to compute module "elixir"
[TRACE] - (starship::modules): Took 24.8527ms to compute module "git_metrics"
[TRACE] - (starship::modules): Took 13.2511ms to compute module "xmake"
[TRACE] - (starship::modules): Took 106.3242ms to compute module "directory"
[TRACE] - (starship::modules): Took 14.7182ms to compute module "c"
[TRACE] - (starship::modules): Took 1.186ms to compute module "fossil_metrics"
[TRACE] - (starship::modules): Took 13.7763ms to compute module "elm"
[TRACE] - (starship::modules): Took 14.3267ms to compute module "zig"
[TRACE] - (starship::modules): Took 14.532ms to compute module "gradle"
[TRACE] - (starship::modules): Took 14.8623ms to compute module "direnv"
[TRACE] - (starship::modules): Took 14.1082ms to compute module "sudo"
[TRACE] - (starship::modules): Took 16.1944ms to compute module "env_var"
[TRACE] - (starship::modules): Took 17.6322ms to compute module "buf"
[TRACE] - (starship::modules): Took 17.1988ms to compute module "erlang"
[TRACE] - (starship::modules): Took 15.81ms to compute module "haskell"
[TRACE] - (starship::modules): Took 15.7842ms to compute module "cmake"
[TRACE] - (starship::modules): Took 39.3232ms to compute module "cmd_duration"
[TRACE] - (starship::modules): Took 113.3744ms to compute module "git_branch"
[TRACE] - (starship::modules): Took 39.2447ms to compute module "fennel"
[TRACE] - (starship::modules): Took 1.1245ms to compute module "mise"
[TRACE] - (starship::modules): Took 13.4523ms to compute module "haxe"
[TRACE] - (starship::modules): Took 13.5966ms to compute module "cobol"
[TRACE] - (starship::utils): stdout: "refs/remotes/origin/main \n", stderr: "", exit code: "Some(0)", took 42.702ms
[TRACE] - (starship::modules): Took 12.788ms to compute module "nix_shell"
[TRACE] - (starship::modules): Took 26.5448ms to compute module "guix_shell"
[TRACE] - (starship::modules): Took 12.8141ms to compute module "helm"
[TRACE] - (starship::modules): Took 207.7285ms to compute module "git_status"
[TRACE] - (starship::modules): Took 15.8917ms to compute module "line_break"
[TRACE] - (starship::modules): Took 12.197ms to compute module "time"
[TRACE] - (starship::modules): Took 25.5358ms to compute module "fortran"
[TRACE] - (starship::modules): Took 1.1664ms to compute module "hg_state"
[TRACE] - (starship::modules): Took 2.4666ms to compute module "battery"
[TRACE] - (starship::modules): Took 38.6196ms to compute module "crystal"
[TRACE] - (starship::modules): Took 18.8832ms to compute module "hg_branch"
[TRACE] - (starship::modules): Took 11.4009ms to compute module "jobs"
[TRACE] - (starship::modules): Took 17.8967ms to compute module "java"
[TRACE] - (starship::modules): Took 19.9104ms to compute module "gleam"
[TRACE] - (starship::modules): Took 29.7799ms to compute module "status"
[TRACE] - (starship::modules): Took 16.7913ms to compute module "kotlin"
[TRACE] - (starship::modules): Took 17.0952ms to compute module "mojo"
[TRACE] - (starship::modules): Took 15.6663ms to compute module "ocaml"
[TRACE] - (starship::modules): Took 28.9999ms to compute module "nim"
[TRACE] - (starship::modules): Took 1.222ms to compute module "shell"
[TRACE] - (starship::modules): Took 29.4475ms to compute module "julia"
[TRACE] - (starship::modules): Took 75.4068ms to compute module "maven"
[TRACE] - (starship::modules): Took 64.2614ms to compute module "golang"
[TRACE] - (starship::modules): Took 18.5331ms to compute module "character"
[TRACE] - (starship::modules): Took 73.2697ms to compute module "os"
[TRACE] - (starship::modules): Took 134.8461ms to compute module "lua"

可以看到 git_branch 从 280ms 降到了 113ms，使用 ls 命令也顺畅多了

5.2 再测磁盘IO

diskspd -c1G -d60 -r -w40 -t4 -o32 -b4K -Sh -L c:\testfile.dat

➜ diskspd -c1G -d60 -r -w40 -t4 -o32 -b4K -Sh -L c:\testfile.dat
WARNING: Error adjusting token privileges for SeManageVolumePrivilege (error code: 1300)
WARNING: Could not set privileges for setting valid file size; will use a slower method of preparing the file

Command Line: C:\Users\linkzz\Downloads\diskspd.exe -c1G -d60 -r -w40 -t4 -o32 -b4K -Sh -L c:\testfile.dat

Input parameters:

        timespan:   1
        -------------
        duration: 60s
        warm up time: 5s
        cool down time: 0s
        measuring latency
        random seed: 0
        path: 'c:\testfile.dat'
                think time: 0ms
                burst size: 0
                software cache disabled
                hardware write cache disabled, writethrough on
                performing mix test (read/write ratio: 60/40)
                block size: 4KiB
                using random I/O (alignment: 4KiB)
                number of outstanding I/O operations per thread: 32
                threads per file: 4
                using I/O Completion Ports
                IO priority: normal

System information:

        computer name: DESKTOP-61E3A0U
        start time: 2026/05/30 09:35:27 UTC

        cpu count:              10
        core count:             10
        group count:            1
        node count:             1
        socket count:           1
        heterogeneous cores:    n

        active power scheme:    骞宠　 (381b4222-f694-41f0-9685-ff5bb260df2e)

Results for timespan 1:
*******************************************************************************

actual test time:       60.00s
thread count:           4

CPU |  Usage |  User  | Kernel |  Idle
----------------------------------------
   0|  29.77%|   3.18%|  26.59%|  70.23%
   1|  29.69%|   7.76%|  21.93%|  70.31%
   2|  22.19%|   4.45%|  17.73%|  77.81%
   3|  22.29%|   3.98%|  18.31%|  77.71%
   4|   6.51%|   2.79%|   3.72%|  93.49%
   5|   3.72%|   1.82%|   1.90%|  96.28%
   6|   3.78%|   2.40%|   1.38%|  96.22%
   7|  13.52%|  11.30%|   2.21%|  86.48%
   8|   6.64%|   5.18%|   1.46%|  93.36%
   9|  12.06%|   4.30%|   7.76%|  87.94%
----------------------------------------
avg.|  15.02%|   4.72%|  10.30%|  84.98%

Total IO
thread |       bytes     |     I/Os     |    MiB/s   |  I/O per s |  AvgLat  | LatStdDev |  file
-----------------------------------------------------------------------------------------------------
     0 |      2024943616 |       494371 |      32.19 |    8239.51 |    3.651 |     6.070 | c:\testfile.dat (1GiB)
     1 |      2005823488 |       489703 |      31.88 |    8161.71 |    3.702 |     6.360 | c:\testfile.dat (1GiB)
     2 |      2056142848 |       501988 |      32.68 |    8366.46 |    3.603 |     6.033 | c:\testfile.dat (1GiB)
     3 |      2048163840 |       500040 |      32.55 |    8334.00 |    3.623 |     6.058 | c:\testfile.dat (1GiB)
-----------------------------------------------------------------------------------------------------
total:        8135073792 |      1986102 |     129.30 |   33101.69 |    3.644 |     6.131

Read IO
thread |       bytes     |     I/Os     |    MiB/s   |  I/O per s |  AvgLat  | LatStdDev |  file
-----------------------------------------------------------------------------------------------------
     0 |      1216397312 |       296972 |      19.33 |    4949.53 |    3.796 |     6.039 | c:\testfile.dat (1GiB)
     1 |      1203802112 |       293897 |      19.13 |    4898.28 |    3.844 |     6.344 | c:\testfile.dat (1GiB)
     2 |      1233788928 |       301218 |      19.61 |    5020.30 |    3.752 |     6.010 | c:\testfile.dat (1GiB)
     3 |      1228251136 |       299866 |      19.52 |    4997.76 |    3.755 |     6.019 | c:\testfile.dat (1GiB)
-----------------------------------------------------------------------------------------------------
total:        4882239488 |      1191953 |      77.60 |   19865.87 |    3.786 |     6.104

Write IO
thread |       bytes     |     I/Os     |    MiB/s   |  I/O per s |  AvgLat  | LatStdDev |  file
-----------------------------------------------------------------------------------------------------
     0 |       808546304 |       197399 |      12.85 |    3289.98 |    3.433 |     6.109 | c:\testfile.dat (1GiB)
     1 |       802021376 |       195806 |      12.75 |    3263.43 |    3.488 |     6.379 | c:\testfile.dat (1GiB)
     2 |       822353920 |       200770 |      13.07 |    3346.17 |    3.381 |     6.060 | c:\testfile.dat (1GiB)
     3 |       819912704 |       200174 |      13.03 |    3336.23 |    3.426 |     6.110 | c:\testfile.dat (1GiB)
-----------------------------------------------------------------------------------------------------
total:        3252834304 |       794149 |      51.70 |   13235.81 |    3.432 |     6.165

Total latency distribution:
  %-ile |  Read (ms) | Write (ms) | Total (ms)
----------------------------------------------
    min |      0.044 |      0.037 |      0.037
   25th |      0.395 |      0.160 |      0.271
   50th |      0.917 |      0.360 |      0.638
   75th |      3.324 |      3.469 |      3.381
   90th |     12.617 |     12.343 |     12.511
   95th |     15.871 |     15.608 |     15.768
   99th |     27.832 |     27.690 |     27.774
3-nines |     42.772 |     42.082 |     42.618
4-nines |     66.620 |     66.518 |     66.607
5-nines |     77.884 |     78.000 |     77.919
6-nines |     78.197 |     78.211 |     78.211
7-nines |     78.263 |     78.211 |     78.263
8-nines |     78.263 |     78.211 |     78.263
9-nines |     78.263 |     78.211 |     78.263
    max |     78.263 |     78.211 |     78.263

可以看到IOPS 26528.41 提升到了 33101.69，吞吐量也从 103.63 MiB/s 提升到了 129.30 MiB/s，最主要的是 CPU 占用不再飙升，至此问题算是解决了。

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