Steven Hartland wrote:
----- Original Message ----- From: "Dan Nelson" <[EMAIL PROTECTED]>
The faster rpms will get you more concurrent I/Os per second but won't
do as much for throughput. My asr 3200S cards got repurposed before I
could try them with 5.x, but with the 370F firmware I'm pretty sure I
was able to get more than 40MB/sec reads out of them on 4.x with 4-disk
RAID5 sets. Since the asr driver needs Giant, try a UP kernel and see
if it goes any faster.
Stated max seq read on the drives ( Maxtor 10k IV's ) is 89MB/s
where as the Seagate SATA's its 65MB/s so its a noticeable difference.
For the RAID to only give 27->33MB/s ( still testing stripe sizes ) is
disappointing to say the least, especially considering I have the SATA
RAID giving me 200MB/s.
Steve
The ASR 370F firmware brought performance from 'abysmal' to 'slightly
tolerable'. Under ideal conditions, it has been benchmarked to get
close to 170MB/s, but you need to be very careful about stripe alignment
and cache settings. Oh, and that was RAID-0, not RAID-5.
Scott
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