Messages in this thread | | | Subject | Re: ~500 megs cached yet 2.6.5 goes into swap hell | From | Benjamin Herrenschmidt <> | Date | Thu, 29 Apr 2004 16:25:53 +1000 |
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On Thu, 2004-04-29 at 16:22, Andrew Morton wrote: > Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote: > > > > > > > The really strange thing is that the behaviour seems to get worse the > > > more RAM you have. I haven't noticed any problem at all on my laptop > > > with 768MB, only on the G5, which has 2.5GB. (The laptop is still on > > > 2.6.2-rc3 though, so I will try a newer kernel on it.) > > > > Your G5 also has a 2Gb IO hole in the middle of zone DMA, it's possible > > that the accounting doesn't work properly. > > heh. It should have zone->spanned_pages - zone->present_pages = 2G.
That should be fine, I'll check later, I can't reboot mine right now.
I'm initializing the zone with free_area_init_node() and I _am_ passing the hole size. Paul, also check if you have NUMA enabled in .config, it changes the way zones are initialized, I may have gotten that case wrong.
Ben.
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