From: Ingo Molnar <mingo@elte.hu>
To: David Sperry <dave_sperry@ieee.org>
Cc: "'dave_sperry@ieee.org'" <dasperry@comcast.net>,
linux-rt-users@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: Poor UDP performance using 2.6.21-rc5-rt5
Date: Tue, 3 Apr 2007 10:51:32 +0200 [thread overview]
Message-ID: <20070403085132.GA15344@elte.hu> (raw)
In-Reply-To: <001d01c77584$6a92ffe0$7901a8c0@dad>
* David Sperry <dave_sperry@ieee.org> wrote:
> > there are a few other things i'm working on to improve this. I've
> > uploaded -rt9 which is the current state of affairs. Note that using
> > -rt9 you'll likely only see IRQ-8406 overhead in the system, because
> > i've added an optimization to do process the softirq-net-tx workload
> > in the hardirq thread if the priority of the two is the same (which
> > is the default behavior). But -rt9 is still work in progress that is
> > not fully finished yet: in some cases i'm seeing 'fluctuating
> > performance' problems on forcedeth that werent there before.
>
> I tried -rt9 and saw some odd 'fluctuating performance'. I'll try it
> again tomorrow when I am much closer to the box's power button.
could you try -rt10? I've improved hardirq/softirq threading performance
some more, and have tuned the forcedeth driver too.
Ingo
next prev parent reply other threads:[~2007-04-03 8:51 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-02 17:50 Poor UDP performance using 2.6.21-rc5-rt5 dave_sperry@ieee.org
2007-04-02 19:04 ` Ingo Molnar
2007-04-03 0:09 ` David Sperry
2007-04-03 6:43 ` Ingo Molnar
2007-04-03 8:51 ` Ingo Molnar [this message]
-- strict thread matches above, loose matches on Subject: below --
2007-04-02 17:17 dave_sperry@ieee.org
2007-04-02 14:09 dave_sperry@ieee.org
2007-04-02 14:23 ` Ingo Molnar
2007-04-01 19:15 Dave Sperry
2007-04-01 20:07 ` Nivedita Singhvi
2007-04-01 22:00 ` Dave Sperry
2007-04-02 5:55 ` Ingo Molnar
2007-04-02 6:30 ` Ingo Molnar
2007-04-02 7:21 ` Ingo Molnar
2007-04-02 8:17 ` Dave Sperry
2007-04-02 9:37 ` Ingo Molnar
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