vscode use out my file watchers

發表於 2020-01-19 更新於 2023-11-30 分類於 software ， ide Disqus：文章字數： 683 所需閱讀時間 ≈ 2 分鐘

ENOSPC

启动其它项目报错 ENOSPC: System limit for number of file watchers reached

也可能它自己报Visual Studio Code is unable to watch for file changes in this large workspace" (error ENOSPC)

多次尝试都是关掉vscode就好了，但之前一直没有更准确的定位问题,以及真的是它的锅吗

网上更多的说改改系统的最大限制吧。

先看看cat /proc/sys/fs/inotify/max_user_watches，大多都是8192，然后说改/etc/sysctl.conf改到fs.inotify.max_user_watches=524288

作为一个网易云音乐不用sudo启动不了就拒绝使用网易云音乐的人，又怎么会轻易该系统的东西//虽然linux是真的好改

我先是自己去看了 ps -aux | grep code/code | awk '{print $2}' | xargs -I {} ls -1 /proc/{}/fd | wc 占用不算多也不算少但是和8192还是差几个数量级(以2为基的数量级)

然后又搜了些资料，大概有anon_inode和inotify这两个关键字，但没具体说是怎么查看

最后是搜到了这个脚本

#!/bin/sh

# Get the procs sorted by the number of inotify watchers
#
# From `man find`: 
#    %h     Leading directories of file's name (all but the last element).  If the file name contains no slashes  (since  it
#           is in the current directory) the %h specifier expands to `.'.
#    %f     File's name with any leading directories removed (only the last element).
lines=$(
    find /proc/*/fd \
    -lname anon_inode:inotify \
    -printf '%hinfo/%f\n' 2>/dev/null \
    \
    | xargs grep -c '^inotify'  \
    | sort -n -t: -k2 -r \
    )

printf "\n%10s\n" "INOTIFY"
printf "%10s\n" "WATCHER"
printf "%10s  %5s     %s\n" " COUNT " "PID" "CMD"
printf -- "----------------------------------------\n"
for line in $lines; do
    watcher_count=$(echo $line | sed -e 's/.*://')
    pid=$(echo $line | sed -e 's/\/proc\/\([0-9]*\)\/.*/\1/')
    cmdline=$(ps --columns 120 -o command -h -p $pid) 
    printf "%8d  %7d  %s\n" "$watcher_count" "$pid" "$cmdline"
done