Messages in this thread | | | Date | Sat, 2 Feb 2002 15:52:53 +0100 (CET) | From | Roy Sigurd Karlsbakk <> | Subject | Re: Errors in the VM - detailed |
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> > Hmm.. suppose this is the problem anyway and that Jens patch was not enough. > > How do the disk drive sound during the test? > > > > Does it start to sound more when performance goes down? > > Yes that would be interesting to know, if the disk becomes seek bound.
The performance never goes down. It's stable @ ~40-43 MB/s. It DID go down, but that was before -rmap11c. Then the problem was in the VM
> Probably, my patch was really just a quick try to see if it changed > anything. > > > Number of READ limits the number of concurrent streams. > > And READA limits the maximum total read ahead. > > Correct, Roy you could try and change the READA balance by allocating > lots more READA requests. Simply play around with the > queue_nr_requests / 4 setting. Try something "absurd" like > queue_nr_requests << 2 or even bigger.
sure.
where do I change this???
-- Roy Sigurd Karlsbakk, MCSE, MCNE, CLS, LCA
Computers are like air conditioners. They stop working when you open Windows.
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