Re: wchan info in ps

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On Sat, Nov 14, 2009 at 7:12 PM, Dimitrios Apostolou <jimis@xxxxxxx> wrote:
> Hello list,
>
> is anyone actually getting WCHAN information from either ps or top? To try
> it just use "ps opid,wchan,cmd". I only get dashes, any idea why?
>

man ps
wchan      WCHAN    name of the kernel function in which the process
is sleeping, a "-" if the process is running, or a "*" if the process
is multi-threaded and ps is not displaying threads.

That said, I only get a dash for the ps itself, and sometimes also for
the shell.

  PID WCHAN  CMD
 4040 n_tty_ -zsh
 4620 rt_sig zsh
 4626 poll_s irssi
12880 pause  screen -r
12942 rt_sig /bin/zsh
14936 rt_sig /bin/zsh
14939 poll_s cmus
23759 poll_s vim lib/libalpm/dload.c
23770 rt_sig /bin/zsh
23842 -      ps opid,wchan,cmd


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