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how can I learn the status of a process (sleeping, running or ready.)
Posted
Updated 22-Dec-11 7:43am
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TASK_RUNNING task (process) currently running
TASK_INTERRUPTABLE process is sleeping but can be woken up (interrupted)
TASK_UNINTERRUPTABLE process is sleeping but can not be woken up (interrupted)
TASK_ZOMBIE process terminated but its status was not collected (it was not waited for)
TASK_STOPPED process stopped by a debugger or job control
TASK_SWAPPING (removed in 2.3.x kernel)

The Life Cycle of Processes

"The /proc/pid/sched file contains a metric ton of scheduling data.I suggest reading through the /proc/*/sched files looking for se.statistics.nr_wakeups or se.statistics.wait_count lines that don't change for an hour. I don't know off-hand which one would give you 'better' results, but try both :) and see which one gives you answers like you expect." ref.

and another link:
Get Process Status

[UPDATED]
Running :
if you read through the /proc/*/sched files looking for se.statistics.nr_wakeups or se.statistics.wait_count lines that changes shortly that means its running.
Sleeping:
if you read through the /proc/*/sched files looking for se.statistics.nr_wakeups or se.statistics.wait_count lines that don't change for an hour that means its sleeping.
 
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Comments
merturk 22-Dec-11 14:21pm    
is there a way learning from terminal? I need to it to make a project? at your link there is something abput processes but it doesn't say anything if they are running or sleeping.
Sergey Alexandrovich Kryukov 22-Dec-11 14:32pm    
Nice answer, my 5.
--SA
Monjurul Habib 22-Dec-11 14:39pm    
thank you
thatraja 22-Dec-11 14:49pm    
5!
Monjurul Habib 22-Dec-11 14:51pm    
thank you

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