Adaptect raid performance with FreeBSD

[Mike Tancsa]

OK, I was curious to see my various 3wares. Both backup servers are Celeron 2G
Raid5 with a 7810 3ware in RAID5.  backup2 RAID1 on a 6800 card (all the 
same Seagate drives)

offsite# dd if=/dev/twed1s1e of=/dev/null bs=1m count=100
100+0 records in
100+0 records out
104857600 bytes transferred in 2.190987 secs (47858611 bytes/sec)

And RAID1 on the 6800.
backup2# dd if=/dev/twed0s1e of=/dev/null bs=1m count=100
100+0 records in
100+0 records out
104857600 bytes transferred in 2.604936 secs (40253425 bytes/sec)

and writing
backup2% dd if=/dev/zero of=/tmp/big bs=1m count=100
100+0 records in
100+0 records out
104857600 bytes transferred in 2.919785 secs (35912781 bytes/sec)
backup2%

offsite% dd if=/dev/zero of=/tmp/big bs=1m count=100
100+0 records in
100+0 records out
104857600 bytes transferred in 2.452074 secs (42762824 bytes/sec)
offsite%

backup2% grep CPU /var/run/dmesg.boot
CPU: Intel(R) Celeron(R) CPU 2.00GHz (2017.98-MHz 686-class CPU)
offsite% grep CPU /var/run/dmesg.boot
CPU: Intel(R) Celeron(R) CPU 2.20GHz (2200.38-MHz 686-class CPU)
         ---Mike

At 10:11 AM 14/01/2004, lists at mediumgreen.com wrote:
>FWIW, on my mylex controller w/ raid 5 I'm getting:
>
># dd if=/dev/da0s1g of=/dev/null bs=1m count=100
>100+0 records in
>100+0 records out
>104857600 bytes transferred in 3.707196 secs (28284882 bytes/sec)
>
>
>and my dell perc3/dc (raid 5) is getting:
>
># dd if=/dev/amrd0s2e of=/dev/null bs=1m count=100
>100+0 records in
>100+0 records out
>104857600 bytes transferred in 2.133522 secs (49147653 bytes/sec)
>
>
>-matthew
>
>
>
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