Messages in this thread | | | Date | Tue, 29 Jul 2003 21:51:18 -0700 | From | "David S. Miller" <> | Subject | Re: [RFC] block layer support for DMA IOMMU bypass mode II |
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On Tue, 29 Jul 2003 22:42:56 -0600 Grant Grundler <grundler@parisc-linux.org> wrote:
> On Mon, Jul 28, 2003 at 01:15:13PM +0200, Andi Kleen wrote: > > Run it with 100-500 users (reaim -f workfile... -s 100 -e 500 -i 100) > > jejb was wondering if 4k pages would cause different behaviors becuase > of file system vs page size (4k vs 16k). ia64 uses 16k by default. > I've rebuilt the kernel with 4k page size and VMERGE != 0. > The substantially worse performance feels like a rat hole because > of 4x pressure on CPU TLB.
Make an ext2 filesystem with 16K blocks :-) - 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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