--
Evan Dower
Undergraduate, Computer Science
University of Washington
Public key: http://students.washington.edu/evantd/pgp-pub-key.txt
Key fingerprint = D321 FA24 4BDA F82D 53A9 5B27 7D15 5A4F 033F 887D
From: Arjan van Leeuwen <[EMAIL PROTECTED]>
To: Jeff Roberson <[EMAIL PROTECTED]>,Sheldon Hearn <[EMAIL PROTECTED]>
CC: [EMAIL PROTECTED]
Subject: Re: Sched_Ule
Date: Thu, 9 Oct 2003 23:36:48 +0200
On Thursday 09 October 2003 22:57, Jeff Roberson wrote:
> 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?
Hi Jeff,
I have the same problem, but with a PS2 mouse. I've never tried an USB mouse
on this system. I've seen this behavior on at least 4 systems now myself,
fast and slow systems (my own workstation is an Athlon XP 2000+, 512MB RAM).
It must be possible for you to reproduce this behavior.
I've seen the lagging mouse on many occasions, always when my system was under
high load. It's very difficult to pinpoint though; for example, if I'm
building a port, I only notice the lagging for small periods of time during
the build (sometimes I don't see it for 5 minutes, then suddenly it lags for
about 3 seconds). Most of the time, it doesn't even bother me.
One of the places it _always_ happens, is when I log out of GNOME 2.4. The background fades to a darker color, and during the fade, I experience the mouse lag.
Can you reproduce this? Maybe you have some hints for me, some things I can try to find out more about this problem?
Arjan
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