Date: Thu, 17 Feb 2005 14:33:51 -0600 From: Jon Noack <noackjr@alumni.rice.edu> To: Julio Capote <jcapote@gmail.com> Cc: stable@freebsd.org Subject: Re: Brief window moving delay after idle.. Message-ID: <4214FFAF.6030301@alumni.rice.edu> In-Reply-To: <1108671177.17247.6.camel@hatter.wonderland.dn> References: <1108671177.17247.6.camel@hatter.wonderland.dn>
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Julio Capote wrote:
> I've been on RELENG_5 for about 1 week now running ULE with PREEMPT.
> Recently, I noticed some strange behavior that could be related to
> scheduling; usually I leave my computer on all night (doing nothing as I
> sleep), But when I'd wake up, and drag a window around, it seems this
> sudden rush of input catches the scheduler by surprise and everything is
> really slow for about 5 seconds. Its a peculiar type of "slow" since
> everything moves smoothly, just 1-2 seconds behind, theres no stuttering
> at all. Gkrellm shows my cpu usage to peak for the time its really slow,
> and then drop to normal when everything "pops" back into speed. I guess
> the best way to describe it would be "bullet time" on your desktop.
^^^^^^^^^^^
Sounds like a feature... ;-)
Seriously, though:
I recently tried ULE+PREEMPTION on a few machines and got some panics on
my SMP box
(http://lists.freebsd.org/pipermail/freebsd-stable/2005-February/011951.html).
My UP machines haven't done anything too strange, though. *shrug*
Getting a lot closer, but not quite there yet...
Jon
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