Linux进程打开文件数量限制修改

一、查看进程打开文件数量

查看当前shell进程打开文件数量（open files行，也可以只查询nofile：ulimit -n）：

# ulimit -a
core file size          (blocks, -c) unlimited
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 13583
max locked memory       (kbytes, -l) 64
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 13583
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited

查看某个进程1124打开文件数量（Max open files行）：

# cat /proc/1124/limits
Limit                     Soft Limit           Hard Limit           Units
Max cpu time