Linux 调优方案， 修改最大连接数(ulimit命令)【转】
转自：http://blog.csdn.net/liangxiaozhang/article/details/8363435
Linux对于每个用户，系统限制其最大进程数。为提高性能，可以根据设备资源情况，设置各linux 用户的最大进程数
可以用ulimit -a 来显示当前的各种用户进程限制。
Linux-PAM
Linux-PAM deals with four separate types of (management) task. These are: authentication management; account management; session management; and password management.
Here is a figure
重新安装当前系统的所有RPM包修复系统.
rpm -qa|xargs yum reinstall -y
Setting up Reinstall Process
Package kernel-2.6.32-71.el6.x86_64 is allowed multiple installs, skipping
Reso...