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ulimit的用法
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Ulimit的用法
2024-01-18
1 分钟阅读
基本常识，各种语焉不详啊，其实ulimit最常用的就两个参数
-u number: 单个用户能运行的最大进程数
-n number: 单个进程可以同时打开的文件描述符的最大值，缺省1024
有两个地方需要设置，Hard和Soft，Hard是Soft的最高限值，天花板。这两个值都可以针对某用户单独设置。
所以设法如下：
ulimit -S -n 10240
ulimit -H -n 20480
ulimit -S -u 10240
ulimit -H -u 20480
可以在/etc/security/limits.conf里设置
* soft nofile 65536
* hard nofile 65536
* soft nproc 131072
* hard nproc 131072
也可以在/etc/rc.d/rc.local中用命令设置
cat /etc/rc.d/rc.local
...
ulimit -u 204800 -HSn 204800
...
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