Linux系统性能统计工具

安装sysstat包。在Ubuntu下，执行如下操作

sudo apt install sysstat

The sysstat package contains the following system performance tools:

  - sar: collects and reports system activity information;

  - iostat: reports CPU utilization and disk I/O statistics;

  - tapestat: reports statistics for tapes connected to the system;

  - mpstat: reports global and per-processor statistics;

  - pidstat: reports statistics for Linux tasks (processes);

  - sadf: displays data collected by sar in various formats;

  - cifsiostat: reports I/O statistics for CIFS filesystems.

 

譬如用pidstat查看系统进程情况。

pidstat -u 5 20