ULE and very bad responsiveness

Jeff Roberson jroberson at chesapeake.net
Fri Nov 14 13:48:44 PST 2003

On Fri, 14 Nov 2003, Jonathan Fosburgh wrote:

> Hash: SHA1
> On Friday 14 November 2003 01:52 pm, Jeff Roberson wrote:
> >
> > This does not happen with SCHED_4BSD?  How fast is your system?  Can you
> > give me an example including what applications you're running and what
> > you're compiling?
> I haven't tried SCHED_4BSD lately.  It will probably be next week before I
> have a chance.  Basically this is while running things such as konqueror,
> kmail, konsole, sometimes Mozilla or Firebird, usually wine for Lotus Notes.
> I think I see it more often on building the world, and again mostly with -j,
> even set at 4 or 5.  This is a 600mHz with ~380M RAM on an ATA drive at
> UDMA-66.

I suspect that you are experiencing some paging activity.  Does top show
that any of your swap is in use?  You probably don't have enough memory to
fit a parallelized buildworld, all the files that it touches, mozilla
(60MB on my machine), Xwindows (Another 60mb on my machine), and your
window manager, which if you're using kde, is probably at least another

> - --
> Jonathan Fosburgh
> AIX and Storage Administrator
> UT MD Anderson Cancer Center
> Houston, TX
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