Messages in this thread | | | Date | Sun, 18 Nov 2001 07:27:44 +0100 | From | Andrea Arcangeli <> | Subject | Re: 2.4.>=13 VM/kswapd/shmem/Oracle issue (was Re: Google's mm problems) |
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On Sun, Nov 18, 2001 at 07:17:02AM +0100, Mike Galbraith wrote: > On Sat, 17 Nov 2001, Andrea Arcangeli wrote: > > > If all your hardware is PCI nobody will make an allocation from the > > ZONE_DMA classzone and so kswapd will never loop on the ZONE_DMA, as > > instead can happen with -ac as soon as the ZONE_DMA becomes unfreeable > > and under the low watermark (and "unfreeable" of course also means all > > anon not locked memory but no swap installed in the machine). > > We don't fallback to ZONE_DMA anymore? (good)
we still fallback on the ZONE_DMA, otherwise mem=17m wouldn't boot :)
what we don't do is to try to balance the dma zone if nobody is asking memory explicitly from the dma zone [isa users].
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