Messages in this thread | | | Date | Tue, 12 Nov 2002 15:23:54 +0100 | From | Jens Axboe <> | Subject | Re: [BENCHMARK] 2.5.47{-mm1} with contest |
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On Tue, Nov 12 2002, Aaron Lehmann wrote: > On Tue, Nov 12, 2002 at 03:04:23AM -0800, Andrew Morton wrote: > > It will never be stunningly better than 2.4 for normal workloads on > > normal machines, because 2.4 just ain't that bad. > > Actually, I am having serious problems with 2.4 (.20-pre5). Copying a > file from hda to hdc without really doing anything else goes very > slowly and lags the whole system ruthlessly. The load average rises to > about three. Any app which tries to touch the disk will hang for > several seconds. Yes, DMA is on on both drives (udma5), as well as > 32-bit I/O and unmaskirq. Bad IDE controller or driver? I don't know. > It's a ServerWorks CSB5. I've been meaning to try 2.5-mm to see if it > improves this.
Testing 2.5 for this would be interesting too indeed, but you should also try 2.4.20-rc1. Between -pre3 and -pre8 (iirc) you could have awfully slow io. And you should probably do
# elvtune -r512 /dev/hd{a,c}
too, in 2.4.20-rc1
-- Jens Axboe
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