文章目录

1. 1. CentOS: ulimit
   1. 1.1. ulimit -a
   2. 1.2. 修改max user processes

Linux操作系统有很多内核参数都会限制用户级程序运行，当遇到一些莫名其妙的CORE时，在确保程序无问题时，一定要去检查一下相关系统参数。

CentOS: ulimit

ulimit -a

size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 514901
max locked memory       (kbytes, -l) 64
max memory size         (kbytes, -m) unlimited
open files                      (-n) 65536
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 10240
cpu time               (seconds, -t) unlimited
max user processes              (-u) 102400
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited

修改max user processes

vim /etc/security/limits.d/90-nproc.conf