Re: direct-io regression [Was: How to track down abysmal performance ata - raid1 - crypto - vg/lv - xfs]

From: Jeff Moyer
Date: Thu Aug 05 2010 - 14:59:11 EST

Chris Mason <chris.mason@xxxxxxxxxx> 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?

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