A. 如何在Linux系統中,查看某個進程中線程佔用cpu或內存等信息
1、查看物理CPU的個數
[root@MysqlCluster01 ~]# cat /proc/cpuinfo |grep "physical id"|sort |uniq|wc -l
1
2、查看邏輯CPU的個數
[root@MysqlCluster01 ~]# cat /proc/cpuinfo |grep "processor"|wc -l
4
3、查看CPU是幾核(即,核心數)
[root@MysqlCluster01 ~]# cat /proc/cpuinfo |grep "cores"|uniq
cpu cores : 4
4、查看CPU的主頻
[root@MysqlCluster01 ~]# cat /proc/cpuinfo |grep MHz|uniq
cpu MHz : 2499.982
5、當前操作系統內核信息
[root@MysqlCluster01 ~]# uname -a
Linux MysqlCluster01 2.6.32-431.20.3.el6.x86_64 #1 SMP Thu Jun 19 21:14:45 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
6、當前操作系統發行版信息
[root@MysqlCluster01 ~]# cat /etc/issue
CentOS release 6.4 (Final)
Kernel \r on an \m
7、內存使用情況
[root@MysqlCluster01 ~]# free -m
total used free shared buffers cached
Mem: 7863 2738 5125 0 141 835
-/+ buffers/cache: 1761 6102
Swap: 3967 0 3967