On Tue, Nov 01, 2005 at 11:33:05AM -0500, Tom Vier wrote: > On Tue, Nov 01, 2005 at 10:35:05AM -0500, Roberto C. Sanchez wrote: > > How is that? The RAID1 on my system read at nearly 2x the speed of a > > single drive. Writing is where the performance is not nearly as good. > > But the, I am using IDE drives with each of the two drive son its own > > channel. > > Not on mine. I have two 7200.8 300gig drives. md1 is raid1: > > /dev/sdc: > Timing buffered disk reads: 184 MB in 3.02 seconds = 61.00 MB/sec > HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl > for device > /dev/sdd: > Timing buffered disk reads: 184 MB in 3.00 seconds = 61.28 MB/sec > HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl > for device > /dev/md1: > Timing buffered disk reads: 210 MB in 3.01 seconds = 69.71 MB/sec > > It may be reading high on the single disk throughput, though, since flush > isn't working. > Are those SCSI disks or IDE disks that are being accessed via SCSI emulation? -Roberto -- Roberto C. Sanchez http://familiasanchez.net/~roberto
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