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Ram Pai <linuxram@us.ibm.com> wrote: > > > OK - maybe that can go for a spin in the next -mm. Andrew did you > > get it? > > So in case my vote counts, add my vote too :) . > Can someone send me the patch? > > But the biggest performance boost has been seen with large max-readahead > window sizes. Currently most of the underlying block devices default to > 32 pages max-readahead even though the underlying device can handle > much larger reads. We could extract much more sequential read > performance if the max-readahead was set to much higher values like 256 > pages which most modern devices are capable off. The problem AFAICT is > that the block device layer defaults the max-readahead value for most > block devices to 32, without consulting the capability of the underlying > block device driver. This can be done in startup scripts. - 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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