Sysstat
在学习iostat的时候，发现它属于sysstat package。
wikipedia Sysstat
sysstat (***sys***tem ***stat***istics) is a collection of performance monitoring tools for Linux. It is available on Unix and Unix-like operating systems.
| command | introduction | 补充说明 |
|---|---|---|
| sar[6] | Collect, report, or save system activity information | |
| iostat(1) | reports basic CPU statistics and input/output statistics for devices, partitions and network filesystems. | 关于IO，参见Programming\IO章节 |
| mpstat(1) | reports individual or combined processor related statistics. | |
| pidstat(1) | reports statistics for Linux tasks (processes) : I/O, CPU, memory, etc. | |
| nfsiostat(1) | reports input/output statistics for network filesystems (NFS). | |
| cifsiostat(1) | reports I/O statistics for CIFS resources. |