[linux-audio-dev] Re: [Jackit-devel] [REQUEST] test the influence of linux1394 kernel drivers on scheduling latency

From: Lee Revell <rlrevell@email-addr-hidden-job.com>
Date: Wed Jun 21 2006 - 01:28:18 EEST

On Wed, 2006-06-21 at 00:21 +0200, Pieter Palmers wrote:
> Hi all,
>
> This weekend I've discovered a (serious) kernel scheduling latency issue
> with the current ieee1394 kernel drivers. Before I submit something
> about this to lkml, I'd like some more tests. I've been able to
> reproduce this on two different machines, so I suspect that this is a
> more general problem.
>
> The problem summary is that running ieee1394 ISO traffic can cause
> scheduling latency spikes up to 1ms, even for RT threads with higher
> priority.
>

Latency tracer output please?

Use 2.6.16 with this patch:

http://people.redhat.com/mingo/latency-tracing-patches/latency-tracing-v2.6.16.patch

Lee
Received on Wed Jun 21 04:15:11 2006

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