On Thu, Aug 05, 2010 at 02:58:37PM -0400, Jeff Moyer wrote: > 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? Clearly I'm wrong, his drive is going much faster ;) I expect the smaller reads to be slower but the drive's internal cache is doing well. -chris -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel