Re: Sched_Ule

From: Jeff Roberson <jroberson_at_chesapeake.net>
Date: Thu, 9 Oct 2003 16:57:43 -0400 (EDT)
On Thu, 9 Oct 2003, Sheldon Hearn wrote:

> On (2003/10/09 00:28), Scott Sipe wrote:
>
> > Anything that seems disk intensive: bzip2 (unbzip2ing one big file makes
> > this happen), making world, building ports, etc makes my X environment
> > practically unusable.  Mouse stutters, reaction times is very slow, feels
> > 10x more sluggish than normal.  (I'm running KDE if anyone is curious).
>
> A number of us are seeing this problem, and not all of us are entry
> level end-users.  I'm using a single PIII with 1GB of RAM and maxusers
> 0.  No Hyper-threading, nothing interesting in the kernel (apart from
> I686_CPU only, KTRACE and _KPOSIX_PRIORITY_SCHEDULING).
>
> The problem (as I recall) is that Jeff hasn't received reports from
> people who can dig into the problem and have the time to do so.
>
> For example, I'm pretty sure I could at least point a finger at the
> problem if I had time.  But I'm under heavy pressure, and so the only
> solution that's feasible for me is to just switch to SCHED_4BSD and keep
> moving.
>
> What surprises me is that Jeff can't reproduce it.
>
> For me, the sluggish mouse problem manifests under these conditions:
>
> 1) Use a USB mouse, not a PS2 mouse.

Is this _only_ with usb?

> 2) SCHED_ULE in the kernel.
> 3) make buildworld (no -j necessary, but -k exacerbates the problem).
> 4) Fiddle around in X (no particular window manager required).
>
> Ciao,
> Sheldon.
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Received on Thu Oct 09 2003 - 11:57:50 UTC

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