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On Sat, 2006-03-11 at 23:54 -0500, Lee Revell wrote: > On Sat, 2006-03-11 at 08:51 +0100, Mike Galbraith wrote: > > There used to be a pages in flight 'restrictor plate' in there that > > would have probably helped this situation at least a little. But in > > any case, it sounds like you'll have to find a way to submit the IO in > > itty bitty synchronous pieces. > > echo 64 > /sys/block/hd*/queue/max_sectors_kb > > There is basically a straight linear relation between whatever you set > this to and the maximum scheduling latency you see. It was developed to > solve the exact problem you are describing. <head-scratching> Is it possible that you mean pci latency? I'm unable to measure any scheduling latency > 5ms while pushing IO for all my little Barracuda disk is worth. I _can_ generate mp3 player audio dropout though, despite mp3 files living on a separate drive/controller. -Mike - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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