[dm-devel] direct-io regression [Was: How to track down abysmal performance ata - raid1 - crypto - vg/lv - xfs]
Jeff Moyer
jmoyer at redhat.com
Thu Aug 5 18:58:37 UTC 2010
Chris Mason <chris.mason at oracle.com> writes:
> But, I'm surprised your drive is doing 8K dio reads at 16MB/s, that
> seems a little high.
I'm not sure why you think that. We're talking about a plain old SATA
disk, right? I can get 40-50MB/s on my systems for 8KB O_DIRECT reads.
What am I missing?
Cheers,
Jeff
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