用ps 查看线程状态

ps -eLo pid,tid,class,rtprio,ni,pri,psr,pcpu,pmem,stat,wchan:30,comm

线程相关选项：

THREAD DISPLAY
H Show threads as if they were processes

-L Show threads, possibly with LWP and NLWP columns

-T Show threads, possibly with SPID column

m Show threads after processes

-m Show threads after processes

状态的打印项含义：

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

-o 选项指定打印的项：

OBSOLETE SORT KEYS
       These keys are used by the BSD O option (when it is used for sorting). The GNU --sort option doesn’t use these keys, but the specifiers
       described below in the STANDARD FORMAT SPECIFIERS section. Note that the values used in sorting are the internal values ps uses and not the
       "cooked" values used in some of the output format fields (e.g. sorting on tty will sort into device number, not according to the terminal name
       displayed). Pipe ps output into the sort() command if you want to sort the cooked values.

       KEY   LONG         DESCRIPTION
       c     cmd          simple name of executable
       C     pcpu         cpu utilization
       f     flags        flags as in long format F field
       g     pgrp         process group ID
       G     tpgid        controlling tty process group ID
       j     cutime       cumulative user time
       J     cstime       cumulative system time
       k     utime        user time
       m     min_flt      number of minor page faults
       M     maj_flt      number of major page faults
       n     cmin_flt     cumulative minor page faults
       N     cmaj_flt     cumulative major page faults
       o     session      session ID
       p     pid          process ID
       P     ppid         parent process ID
       r     rss          resident set size
       R     resident     resident pages
       s     size         memory size in kilobytes
       S     share        amount of shared pages
       t     tty          the device number of the controlling tty
       T     start_time   time process was started
       U     uid          user ID number
       u     user         user name
       v     vsize        total VM size in kB
       y     priority     kernel scheduling priority

其他，man ps可以查看。