Messages in this thread | | | From | Daniel Phillips <> | Subject | Re: [PATCH] drop-behind fix for generic_file_write | Date | Wed, 3 Jan 2001 16:21:17 +0100 |
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On Wed, 03 Jan 2001, Rik van Riel wrote: > Hi Linus, Alan, > > the following (trivial) patch fixes drop-behind behaviour > in generic_file_write to only drop fully written pages. > > This increases performance in dbench by about 8% (as > measured by Daniel Phillips) and should get rid of the > logfile bottleneck Ingo Molnar found with the drop-behind > call in generic_file_write in TUX tests.
Rik, I detected the speedup in -pre5 but it disappeared in -pre7 (which turned in a faster performance than pre5 or 6 anyway). I don't have an explanation for that. The idea makes sense: treat a partial page as 'in play' until completely full, then deactivate it.
-- Daniel - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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