Messages in this thread | | | Date | Sat, 23 Oct 2004 10:03:44 +1000 | From | Con Kolivas <> | Subject | Re: 2.6.9-ck1: swap mayhem under UT2004 |
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Alastair Stevens wrote: > Con and others: I've been running 2.6.9-ck1 for a couple of days, and seem > to have hit on a major swapping issue.... > > My machine is a UP Athlon 2500+ with 512MB, and everything hums along > nicely under normal desktop usage. But when launching UT2004, it just > crawls and jerks like hell. At one point, it appeared to have frozen > completely, but I managed to switch to a text console to see what was > happening, and basically I'd hit a swap frenzy: kswapd was sucking 50% of > the CPU, fighting with the UT2004 process. > > My RAM appeared to be almost "full", with no cache/buffers, but only a few > hundred K of swap was actually being used, and this wasn't changing. > The kswapd frenzy carried on for at least a couple of minutes; then > suddenly everything went smooth again and the game played perfectly from > then on. > > This is definitely new behaviour; I've run every recent 2.6 kernel, with > and without the staircase scheduler patch (but not the full -ck), and > never had any problems before. Yes, I'm running the dratted Nvidia > driver, but that's not the issue as it's been loaded with every other > kernel. Switching back to 2.6.9-rc3 makes everything behave perfectly > again.... > > Any ideas? Any more info required?
I've seen reports of this happening since 2.6.9 _even on mainline_. Something seems very sick with kswapd where it consumes massive amounts of cpu. Can you reproduce without any -ck patches? Others have already done so, but it seems to happen earlier with -ck.
Con [unhandled content-type:application/pgp-signature] | |