Messages in this thread | | | Date | Sat, 12 May 2001 15:45:17 +0200 (CEST) | From | Mike Galbraith <> | Subject | Re: 2.4.4 kernel freeze for unknown reason |
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On Sat, 12 May 2001, Alan Cox wrote:
> > > > If I turn swap off all together or turn it off and back on > > > > periodically to clear the swap before it gets full, I do not seem to > > > > experience the lockups. > > > > Why do I not see this behavior with a heavy swap throughput test load? > > It seems decidedly odd to me that swapspace should remain allocated on > > other folks lightly loaded boxen given that my heavily loaded box does > > release swapspace quite regularly. What am I missing? > > If you swap really hard it seems much happier. If you vaguely swap stuff out > over time then I too see the description above only I have Rik's dont deadlock > on oom tweak so I see apps die.
Does any swap write/release if you hit such a box with heavy duty IO? (pages on dirty list, swapspace allocated but writeout defered?)
If not, I'd be interested in seeing sysrq-m of a box in such a state.. particularly so if the total pages on active, dirty and clean lists is only a small fraction of total pages. (information leak?)
-Mike
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