Messages in this thread | | | Date | Thu, 4 Feb 1999 16:59:20 +0100 (CET) | From | Andrea Arcangeli <> | Subject | Re: Linux-2.2.0 bad VM behaviour "dd if=/dev/zero of=/dev/hdc bs=256k" |
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On Thu, 4 Feb 1999, Stephen C. Tweedie wrote:
> In other words, if the number of dirty buffers grows too excessive, then > we kick of a round of bdflush _and_ wait for the IO to complete,
Agreed. I agree completly with this solution. Waking up faster kflushd as suggested by Linus had no way to avoid the dirty MM bomb (kflushd is just wakenup in a rasonable time now, and btw it's behavior it's just completly customizable via sysctl).
> I'm going to try out combinations of the above on large and small > machines to make sure we get something which doesn't impact normal > performance too badly, but I suspect that a simple change like the above > in refile_buffer will be enough to cure the complete memory anihilating > behaviour of the new, lean buffer cache code.
I think yes. I have not checked the code yet though.
Andrea Arcangeli
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