cdold@starfish.Convergent.COM (Clarence Dold) (02/18/89)
I just got a SCSI Micropolis 380MB 5.25" drive, which prompted me to
check some raw transfer rates on two UNIX systems that we have.
I transferred 7.6 MB from disk to null on active systems.
#time dd if=/dev/rdsk/c0d0s2 of=/dev/null bs=128k count=60
System Interface Disk Seconds Rate
12.5MHz 68020 ST506 Hitachi DK511-8 20.2 380 KBpS
25 MHz 68020 ST506 Hitachi DK511-8 19.0 404 KBpS
X-SMD NorTel 8412 11.11 691 KBpS
SCSI Micropolis 1578 8.9 862 KBpS
Copying point to point on the same disk.
#time dd if=/dev/rdsk/c0d0s2 of=junk bs=128k count=60
25 MHz 68020 SCSI Micropolis 1578 26.8 573 KBpS (total)
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Clarence A Dold - cdold@starfish.Convergent.COM (408) 434-2083
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