性能分析vmstat虚拟内存统计用法Usage:
vmstat [options] [delay [count]]
Options:
-a, --active active/inactive memory
-f, --forks number of forks since boot
-m, --slabs slabinfo
-n, --one-header do not redisplay header
-s, --stats event counter statistics
-d, --disk disk statistics
-D, --disk-sum summarize disk statistics
-p, --partitionpartition specific statistics
-S, --unitdefine display unit
-w, --wide wide output
-t, --timestamp show timestamp
-h, --help display this help and exit
-V, --version o
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