Date: Thu, 23 Dec 2010 09:21:08 -0800
From: Randy Dunlap <rdunlap@xenotime.net>
To: Dario Faggioli <raistlin@linux.it>
Cc: Thomas Gleixner <tglx@linutronix.de>,
        linux-kernel <linux-kernel@vger.kernel.org>, torbenh <torbenh@gmx.de>,
        oleg <oleg@redhat.com>, john.stultz@linaro.org, roland@redhat.com,
        Ingo Molnar <mingo@elte.hu>, Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH] Read THREAD_CPUTIME clock from other  processes.
Message-Id: <20101223092108.3f28d853.rdunlap@xenotime.net>
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References: <1293121303.3390.185.camel@Palantir>
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On Thu, 23 Dec 2010 17:21:43 +0100 Dario Faggioli wrote:

> Trying to read CLOCK_THREAD_CPUTIME_ID of a thread from outside
> the process that spawned it with this code:
> 
>         if (clock_getcpuclockid(tid, &clockid) != 0) {
>                 perror("clock_getcpuclockid");
>                 exit(EXIT_FAILURE);
>         }
> 
> results in this:
>   ### Testing tid 24207: CPU-time clock for PID 24207 is 1.132371729 seconds
>   ### Testing tid 24209: clock_getcpuclockid: Success
> 
> OTH, if full-fledged processes are involved, the behaviour is this:
>   ### Testing tid 24218: CPU-time clock for PID 24218 is 0.001059305 seconds
>   ### Testing tid 24220: CPU-time clock for PID 24220 is 1.044057391 seconds
> 
> Test programs available here: http://gitorious.org/clockid.


"DNS service for this domain has expired with DNS Made Easy"  :(

---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
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