Sysstat 10.1.2 发布，改进：
A new field has been added to sar -u and mpstat: %gnice (time spent running a niced guest).
A new field has been added to sar -r: kbdirty (amount of memory waiting to get written back to disk).
Support has been added for the systemd service manager.
The Sysstat init script has been updated to make it better conform to the LSB
有关 Sysstat 安装与简单使用，请移步： 监测 Linux 系统性能及效率：sysstat
Ps.iostat：查看 CPU 使用率及硬盘吞吐率
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