On Tue, Nov 01, 2005 at 10:29:46AM -0500, Tom Vier wrote: > On Tue, Nov 01, 2005 at 11:05:53AM -0200, Bruno Diniz wrote: > > /dev/sda: > > Timing buffered disk reads: 170 MB in 3.01 seconds = 56.41 MB/sec > > /dev/sdb: > > Timing buffered disk reads: 180 MB in 3.01 seconds = 59.81 MB/sec > > /dev/md0: > > Timing buffered disk reads: 134 MB in 3.04 seconds = 44.09 MB/sec > > What kernel are you running? I don't have it that bad, with 2.6.13, but it's > definately slower than earlier 2.6 kernels. raid0 performance used to be > very good. raid1 has always sucked (reads no faster than a single drive). > 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. -Roberto -- Roberto C. Sanchez http://familiasanchez.net/~roberto
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