ps 之 STAT的含义

PROCESS STATE CODES       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, either by a job control signal or because it is being traced.       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