RE: Cpu utilization per thread

From: N Chandra Shekhar REDDY
Date: Thu Jun 23 2005 - 01:42:39 EST

Thanks for the reply.
I have tried with getrusage it is giving zero as the result.
I have found one more method(using setitimer(ITIMER_PROF,&enc_timer,NULL);
and signal SIGPROF) which will give the user and system time of a process.
Is it applicable for the thread?
Does this method give the expected results for thread?

-----Original Message-----
From: J.A. Magallon [mailto:jamagallon@xxxxxxx]
Sent: Wednesday, June 22, 2005 7:01 AM
To: N Chandra Shekhar REDDY
Cc: linux-kernel@xxxxxxxxxxxxxxx
Subject: Re: Cpu utilization per thread

On 06.21, N Chandra Shekhar REDDY wrote:
> Hi all,
> Can any body tell me
> How to find cpu utilization per thread excluding wait times and sleep
> Regards
> ncs

man getrusage.

Pay special attention to the RUSAGE_SELF or RUSAGE_CHILDREN
flag, but I think current linux kernel does not perform a correct account
for threads rusage in the parent. Probably you will have to account each
thread, return info to the parent and sum or average (sum cpu times,
average elapsed times...)

J.A. Magallon <jamagallon()able!es> \ Software is like
werewolf!able!es \ It's better when it's
Mandriva Linux release 2006.0 (Cooker) for i586
Linux 2.6.12-jam1 (gcc 4.0.1 (4.0.1-0.2mdk for Mandriva Linux release

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