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Date: Sat, 10 Feb 2007 07:50:22 +1100 From: Con Kolivas <kernel@...ivas.org> To: Andrew Morton <akpm@...ux-foundation.org> Cc: jos poortvliet <jos@...nkamer.nl>, ck@....kolivas.org, linux-kernel@...r.kernel.org Subject: Re: [ck] Re: Swap prefetch merge plans On Saturday 10 February 2007 07:30, Andrew Morton wrote: > On Fri, 09 Feb 2007 14:13:03 +0100 > > jos poortvliet <jos@...nkamer.nl> wrote: > > Nick's comment, replying to me some time ago: > > I think I was thinking of this: > > http://lkml.org/lkml/2006/2/6/509 Fortunately that predates a lot of changes where I did address all those. These will seem out of context without looking at that original email so I apologise in advance. buffered_rmqueue and prefetching x86 specific (not into DMA) were dropped It is NUMA aware Global cacheline bouncing in page allocation and page reclaim paths I have no answer for as I have to tell swap prefetch that the vm is busy somehow and I do that by setting precisely one bit in a lockless manner. The trylocks were dropped. The other ideas were to : -extend the prefetching. That's extra features -knowing for sure when a system is really idle. I've tried hard to do that as cheaply as possible. -putting pages on the lru? well it puts them on the tail -papering over an issue? As I said, no matter how good the vm is, there will always be loads that swap. -- -ck - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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