在做压力测试时候:
[root@666 ok]# webbench -c 5000 -t30 http://10.100.0.61/ Webbench - Simple Web Benchmark 1.5 Copyright (c) Radim Kolar 1997-2004, GPL Open Source Software. Benchmarking: GET http://10.100.0.61/ 5000 clients, running 30 sec. Speed=176440 pages/min, 4025737 bytes/sec. Requests: 88219 susceed, 1 failed. [root@666 ok]# webbench -c 50000 -t30 http://10.100.0.61/ Webbench - Simple Web Benchmark 1.5 Copyright (c) Radim Kolar 1997-2004, GPL Open Source Software. Benchmarking: GET http://10.100.0.61/ 50000 clients, running 30 sec. problems forking worker no. 6594 fork failed.: Cannot allocate memory bash: fork: Cannot allocate memory bash: fork: Cannot allocate memory bash: fork: Cannot allocate memory bash: fork: Cannot allocate memory bash: fork: Cannot allocate memory bash: fork: Cannot allocate memory bash: fork: Cannot allocate memory bash: fork: Cannot allocate memory bash: fork: Cannot allocate memory bash: fork: Cannot allocate memory bash: fork: Cannot allocate memory .... bash: cannot make pipe for command substitution: Too many open files
查询pid_max值:
[root@666 ok]# sysctl kernel.pid_max kernel.pid_max = 32768
修改pid_max的值:
[root@666 ok]# sysctl -w kernel.pid_max=60000 kernel.pid_max = 60000 [root@666 ok]# sysctl kernel.pid_max kernel.pid_max = 60000
[root@666 ok]# echo 'kernel.pid_max=9999' >>/etc/sysctl.conf [root@666 ok]# sysctl -p kernel.pid_max = 9999