From: Mark Knecht <markknecht@gmail.com>
To: Daniel Walker <dwalker@mvista.com>
Cc: linux-kernel@vger.kernel.org, Ingo Molnar <mingo@elte.hu>,
Lee Revell <rlrevell@joe-job.com>
Subject: Re: Latency data - 2.6.14-rc3-rt13
Date: Mon, 10 Oct 2005 20:45:30 -0700 [thread overview]
Message-ID: <5bdc1c8b0510102045u7e4bc9eeld5b690b5e96c4a5f@mail.gmail.com> (raw)
In-Reply-To: <5bdc1c8b0510101649s221ab437scc49d6a49269d6b@mail.gmail.com>
On 10/10/05, Mark Knecht <markknecht@gmail.com> wrote:
>
> ( softirq-timer/0-3 |#0): new 3997 us maximum-latency critical section.
So the root cause of this 4mS delay is the 250Hz timer. If I change
the system to use the 1Khz timer then the time in this section drops,
as expected, to 1mS.
( softirq-timer/0-3 |#0): new 998 us maximum-latency critical section.
=> started at timestamp 121040020: <acpi_processor_idle+0x20/0x379>
=> ended at timestamp 121041019: <thread_return+0xb5/0x11a>
So, thinking very interesting here I think.
Back to the drawing board as to my xruns.
- Mark
next prev parent reply other threads:[~2005-10-11 3:45 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-10 20:16 Mark Knecht
2005-10-10 20:49 ` Daniel Walker
2005-10-10 21:12 ` Mark Knecht
2005-10-10 21:28 ` Mark Knecht
2005-10-10 21:44 ` Daniel Walker
2005-10-10 22:09 ` Mark Knecht
2005-10-10 22:28 ` Daniel Walker
2005-10-10 23:33 ` Mark Knecht
2005-10-10 23:49 ` Mark Knecht
2005-10-11 3:45 ` Mark Knecht [this message]
2005-10-11 6:46 ` Steven Rostedt
2005-10-11 8:56 ` Sven-Thorsten Dietrich
2005-10-11 11:17 ` Ingo Molnar
2005-10-11 22:45 ` Mark Knecht
2005-10-12 0:02 ` Lee Revell
2005-10-12 1:09 ` Mark Knecht
2005-10-12 1:21 ` Lee Revell
2005-10-12 1:25 ` Mark Knecht
2005-10-12 6:38 ` Steven Rostedt
2005-10-12 16:18 ` Lee Revell
2005-10-12 17:03 ` Steven Rostedt
2005-10-11 3:56 ` Matan Peled
2005-10-11 4:45 ` Mark Knecht
2005-10-11 6:14 ` Ingo Molnar
2005-10-11 7:53 ` Ingo Molnar
2005-10-10 21:39 ` Daniel Walker
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