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Christoph Lameter wrote: > >I know that Jack and Nick did something with those counts to insure that >page coloring effects are avoided. Would you comment? > > The 'batch' argument to setup_pageset should be clamped to a power of 2 minus 1 (ie. 15, 31, etc), which was found to avoid the worst of the colouring problems. pcp->high of the hotlist IMO should have been reduced to 4 anyway after its pcp->low was reduced from 2 to 0. I don't see that there would be any problems with playing with the ->high and ->low numbers so long as they are a reasonable multiple of batch, however I would question the merit of setting the high watermark of the cold queue to ->batch + 1 (should really stay at 2*batch IMO). Nick Send instant messages to your online friends http://au.messenger.yahoo.com - 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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