Sysstat v11.5.3 发布了。SYSSTAT 是一个软件包，包含监测系统性能及效率的一组工具，这些工具对于我们收集系统性能数据，比如 CPU 使用率、硬盘和网络吞吐数据，这些数据的收集和分析，有利于我们判断系统是否正常运行，是提高系统运行效率、安全运行服务器的得力助手。
Sysstat v11.5.3 更新内容：
sar: Add new metric "available free memory" to memory statistics.
Update DTD and XSD documents to include new metric.
sar/pidstat/iostat/tapestat/cifsiostat: Add new --human option to display values in human readable format.
SVG: Add new option "showidle" to be used with sadf to display CPU idle state.
sar/mpstat: Allow selection of a range of CPU or interrupts.
Update mpstat, sar and sadf manual pages.
iostat/mpstat: Fix "'LC_NUMERIC' undeclared" error message when compiling sysstat.
Sort keywords definition in sar, sadc and mpstat manual pages[11.2.9] [11.4.3].
SVG: Change some colors to make graphs easier to distinguish[11.4.3].
Small fix in iostat manual page [11.2.9] [11.4.3].
Cosmetic changes in source code [11.2.9] [11.4.3].
Update lsm file contents.
NLS updated.
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