From: fche@redhat.com (Frank Ch. Eigler)
To: "Mauricio Lin" <mauriciolin@gmail.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: Jiffy is not able to measure the fraction of time a process runs a processor
Date: 14 Mar 2006 15:54:17 -0500 [thread overview]
Message-ID: <y0mveugagsm.fsf@ton.toronto.redhat.com> (raw)
In-Reply-To: <3f250c710603130549w6ccdf14cu73a0d7d2999fd4ee@mail.gmail.com>
"Mauricio Lin" <mauriciolin@gmail.com> writes:
> I am trying to measure the fraction of time a process runs on a
> processor, but the jiffies is not able to provide an accurate value.
See sched_clock().
> The example below [...]
> PID : NAME : LAST ARRIVAL : CPU TIME : CALLER
> 4544 : kmix : 6170433 : 0 : work_resched+0x6c
> 4078 : lpd : 6170433 : 0 : __down_interruptible+0x5
> 4544 : kmix : 6170433 : 0 : schedule_timeout+0xb8
What tool/patchset are you using to generate this trace?
- FChE
next prev parent reply other threads:[~2006-03-14 20:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-13 13:49 Mauricio Lin
2006-03-14 20:54 ` Frank Ch. Eigler [this message]
2006-03-15 14:40 ` Mauricio Lin
2006-03-15 15:55 ` linux-os (Dick Johnson)
2006-03-15 17:43 ` Mauricio Lin
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