Date: Thu, 17 Feb 2005 19:44:02 -0500 From: Julio Capote <jcapote@gmail.com> To: Kris Kennaway <kris@obsecurity.org> Cc: stable@freebsd.org Subject: Re: Brief window moving delay after idle.. Message-ID: <1108687442.18836.2.camel@hatter.wonderland.dn> In-Reply-To: <20050217233559.GA19140@xor.obsecurity.org> References: <1108671177.17247.6.camel@hatter.wonderland.dn> <20050217233559.GA19140@xor.obsecurity.org>
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On Thu, 2005-02-17 at 15:35 -0800, Kris Kennaway wrote: > On Thu, Feb 17, 2005 at 03:12:57PM -0500, 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. > > It's probably just paging stuff back in after having paged it out > overnight to run something like the nightly cron jobs. > > Kris I doubt it, since the disks are perfectly silent, and the computer appears to be nothing at all. It would be interesting to track down as to what the scheduler is doing during this time (schedgraph?). Im running a stock xfce4.2.0 if that matters any. Julio
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