测并发 Too many open files 问题的解决
ulimit -a 查看限制显示：
core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 23256 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) 23256 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited
ulimit -n 65535将 open files的限制改大
这里只是改变当前shell的限制
全局改变把ulimit -n 65535加到/etc/profile
或者将这个语句加到启动指定程序的shell脚本
