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說明:
文件描述符fd(File Descriptor), 對於服務器來說,每一個TCP連接都要佔用一個文件描述符。 普通用戶默認限制的1024。通過下圖查看到1000左右
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參考
https://www.cnblogs.com/embedded-linux/p/10225097.html https://juejin.cn/post/6844904005202608136 http://www.ruanyifeng.com/blog/2011/12/inode.html
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查看當前用戶限制
ulimit -n
- 查找進程
ps -aux | grep name
- 結果如下
$ cat /proc/2425532/limits
Limit Soft Limit Hard Limit Units
Max cpu time unlimited unlimited seconds
Max file size unlimited unlimited bytes
Max data size unlimited unlimited bytes
Max stack size 8388608 unlimited bytes
Max core file size 0 unlimited bytes
Max resident set unlimited unlimited bytes
Max processes 256942 256942 processes
Max open files 1024 1048576 files
Max locked memory 67108864 67108864 bytes
Max address space unlimited unlimited bytes
Max file locks unlimited unlimited locks
Max pending signals 256942 256942 signals
Max msgqueue size 819200 819200 bytes
Max nice priority 0 0
Max realtime priority 0 0
Max realtime timeout unlimited unlimited us
- 修改系統最大打開文件數
$ vim /etc/security/limits.d/20-nproc.conf
* soft nofile 65535
* hard nofile 65535
* soft nproc 65535
* hard nproc 65535
root soft nproc unlimited
$ reboot # 重啓服務器