ps -eo pid,ppid,user,group,pcpu,pmem,comm,stat,state,time,lstart,ni,tty,vsize,sz | sort -r -k 5

comm = command = args = cmd
pcpu = cpu utilization of the process in "##.#" format
time = cumulative CPU time
pmem = ratio of the process’s resident set size  to the physical memory on the machine, expressed as a percentage
lstart = time the command started
ni = nice value. This ranges from 19 (nicest) to -20 (not nice to others)
tty = tt = tname = controlling tty (terminal).
vsize = vsz = virtual memory size of the process in KiB
sz = size in physical pages of the core image of the process

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一切從主機的 load average 升高開始

top 看到一堆 perl 程序在跑，且 User 是 Apache

我用 ps axjf | less 查不到它的資訊

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