Linux工具sysstat运维代码改变人生，技术改变世界-

sysstat

该服务包括监控系统性能及效率的一组工具。这些工具对于收集系统的性能数据很有帮助：核心工具包：

iostat : cpu使用率及硬盘吞吐效率工具

mpstat：提供单个或者多个处理器的数据

sar 负责收集，报告并存储系统活跃的信息

yum provides sysstat

yum -y install sysstat

  [root@localhost ~]# yum provides sysstat Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile sysstat-10.1.5-18.el7.x86_64 : Collection of performance monitoring tools for Linux Repo        : os    sysstat-10.1.5-18.el7_7.1.x86_64 : Collection of performance monitoring tools for Linux Repo        : updates    [root@localhost ~]# yum -y install sysstat  

 [root@localhost ~]# iostat Linux 3.10.0-514.26.2.el7.x86_64 (localhost)  08/26/2017  _x86_64_ (1 CPU)  avg-cpu:  %user   %nice %system %iowait  %steal   %idle            0.43    0.00    0.26    0.13    0.00   99.18  Device:            tps    kB_read/s    kB_wrtn/s    kB_read    kB_wrtn scd0              0.00         0.00         0.00        314          0 vda               3.54        18.95        32.04    7468421   12626848  [root@localhost ~]#  [root@localhost ~]# mpstat Linux 3.10.0-514.26.2.el7.x86_64 (localhost)  08/26/2017  _x86_64_ (1 CPU)  11:38:45 PM  CPU    %usr   %nice    %sys %iowait    %irq   %soft  %steal  %guest  %gnice   %idle 11:38:45 PM  all    0.43    0.00    0.26    0.13    0.00    0.00    0.00    0.00    0.00   99.18 [root@localhost ~]#