Indan Zupancic wrote:
This patch seems to work with my SiI 3512, though I don't notice any difference, neither a speedup, nor a slowdown. Hdparm gives the same speeds (-tT), and cp -a'ing kernel sources is abysmal slow in both cases, (need to look into that one) so I didn't really test it that well.
It won't result in much of a speedup, except in situations where IOMMU or other situation that causes you to run into the 64k boundary being an issue -- generally only on huge transfers.
A good measure is to dd(1) to/from the block device, rather than using a filesystem. As has been shown on LKML, the filesystem can really slow things down in some cases.
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