On Wed, Aug 22, 2007 at 01:05:13PM +0200, Andi Kleen wrote: > Ok perhaps the new adaptive dirty limits helps your single disk > a lot too. But your improvements seem to be more "collateral damage" @) > > But if that was true it might be enough to just change the dirty limits > to get the same effect on your system. You might want to play with > /proc/sys/vm/dirty_*
The adaptive dirty limit is per task so it can't be reproduced with global sysctl. It made quite some difference when I researched into it in function of time. This isn't in function of time but it certainly makes a lot of difference too, actually it's the most important part of the patchset for most people, the rest is for the corner cases that aren't handled right currently (writing to a slow device with writeback cache has always been hanging the whole thing). - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
