Messages in this thread |  | | | Date | Fri, 5 Feb 1999 14:23:34 -0800 (PST) | | From | Matthew Jacob <> | | Subject | Re: Linux-2.2.0 bad VM behaviour "dd if=/dev/zero of=/dev/hdc bs=256k" |
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> > Can you try the patch below (made against 2.2.2-pre2)? The key is to > recognise that when we wake up bdflush, we need to take into account how > many dirty buffers there are; but when we decide whether or not to wait > for the bdflush pass to complete, it is BUF_LOCKED, not BUF_DIRTY, > buffers which are important. If we don't wait for bdflush once > BUF_LOCKED grows too high, then we will simply continue to create more > locked IO buffers until the request queues are completely saturated. >
How very appropriate. I've been whining about this to a lot of folks lately- all of primary memory gets saturated with buffers needing to be flushed and response time goes to hell.
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