Re: kswapd and system response

From: Ahmed Masud (masud@marauder.googgun.com)
Date: Sat Nov 24 2001 - 15:48:24 EST


On Sat, 24 Nov 2001, Peter Jay Salzman wrote:

> hi there,
>
> every so often, my system (2.4.13 smp) gets really sloooooow. a typical top
> looks something like:
>
> PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND
> 5 root 14 0 0 0 0 RW 99.9 0.0 7:52 kswapd
> 7 root 9 0 0 0 0 SW 1.9 0.0 0:04 kupdated
> 2053 root 13 0 984 984 776 R 0.7 0.4 0:01 top
> 2063 p 9 0 2080 2080 1292 S 0.3 0.9 0:00 vim
>
> kswapd is definitely not behaving correctly.
>
> the thing that brought it on this time was gtv (an mpeg viewer which uses
> sdl) bailed on me. X "kind of" froze, so i killed it. but that's only the
> cause this time around. last time, it happened between the time of going to
> bed and waking up (ie- the system was pretty much idling from a user's pov).
>
> this has been happening with the 2.4.13 kernel every couple of days.
>

Hello

I have experienced similar behaviour with kswapd/kupdated with 2.4.12 and
2.4.13 . After much struggle, I discovered that the system had become
slugish and non-responsive because i was using the wrong IDE busmastering
and DMA drivers (VIA chipset) instead of the correct ones for my
motherboard (PROMISE chipset). If you are using IDE, then perhaps you have
something similar and are using the incorrect drivers?

If you are indeed using IDE then suggest that you turn of busmastering all
together and give it another try.

Ahmed.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Fri Nov 30 2001 - 21:00:17 EST