输出格式

　　USER　　 PID 　　%CPU 　　%MEM 　　VSZ 　　RSS 　　TTY 　　STAT 　　START 　　TIME 　　COMMAND

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　　VSZ:占用的虚拟内存大小()

　　RSS:

 

stat:

 Here are the different values that the s, stat and state output specifiers (header "STAT" or "S") will
   display to describe the state of a process:

           D    uninterruptible sleep (usually IO)
           R    running or runnable (on run queue)
           S    interruptible sleep (waiting for an event to complete)
           T    stopped by job control signal
           t    stopped by debugger during the tracing
           W    paging (not valid since the 2.6.xx kernel)
           X    dead (should never be seen)
           Z    defunct ("zombie") process, terminated but not reaped by its parent

   For BSD formats and when the stat keyword is used, additional characters may be displayed:

           <    high-priority (not nice to other users)
           N    low-priority (nice to other users)
           L    has pages locked into memory (for real-time and custom IO)
           s    is a session leader
           l    is multi-threaded (using CLONE_THREAD, like NPTL pthreads do)
           +    is in the foreground process group

 

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