On Tue, 27 Jul 2010 09:41:51 +0000 Alexander Best <arun...@freebsd.org> wrote:
> hi there, > > i just stumpled upon this article over at phoronix which benchmarks > ZFS ATA vs. ZFS CAM ATA on freebsd 8.1 [1]. it seems read > performance is really low when CAM ATA is enabled. i remember > phoronix being famous for posting stupid benchmarks (RELASE vs. > HEAD and such). however their benchmark results in this example > seem to be valid. > > any comments on that? has performance of ATA CAM increased in HEAD? > would a UFS2+S+SUJ ATA vs. UFS2+S+SUJ CAM ATA also show equal > results? Not sure about any speed increases with ATA_CAM, but I for one controller I have in this system I did get a massive boost and a end to annoying disk issues with AHCI.
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