How to look how many kernel threads running on linux machine

[venkatb18]

Hi All,

I fi need to know how many threads and which threads running on linux machine?
Is there any command to look those threads?
As well as interrupts and tasklets also.

Could you please help for this.

thanks
--Venkatesh

[tthtlc]

how about "ps auxwf":

USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 2 0.0 0.0 0 0 ? S< 15:03 0:00 [kthreadd]
root 3 0.0 0.0 0 0 ? S< 15:03 0:00 \_ [migration/0]
root 4 0.0 0.0 0 0 ? S< 15:03 0:00 \_ [ksoftirqd/0]
root 5 0.0 0.0 0 0 ? S< 15:03 0:00 \_ [watchdog/0]
root 6 0.0 0.0 0 0 ? S< 15:03 0:00 \_ [migration/1]
root 7 0.0 0.0 0 0 ? S< 15:03 0:00 \_ [ksoftirqd/1]
root 8 0.0 0.0 0 0 ? S< 15:03 0:00 \_ [watchdog/1]
root 9 0.0 0.0 0 0 ? S< 15:03 0:00 \_ [events/0]
root 10 0.0 0.0 0 0 ? S< 15:03 0:00 \_ [events/1]
root 11 0.0 0.0 0 0 ? S< 15:03 0:00 \_ [khelper]
root 64 0.0 0.0 0 0 ? S< 15:03 0:00 \_ [kblockd/0]

tasklet and interrupts is too fine grain to see......u have to write a kernel module to see.

for interrupt, its static info is here /proc/interrupts.

[venkatb18]

Hi ,
Thanks for giving reply, couldd you please give kernel module code to see tasklets and interrupts.

Thanks,
--Venkatesh