Simple disk performance test.

[Derek E. Terveer]

In article <579 at tapa.UUCP>, larry at tapa.UUCP (Larry Pajakowski) writes:
> We just got a Compaq-386/20 with the Compaq 130mb. disk.
> I did a crude measure of disk performance on the Comaq under SCO Xenix-286
> 2.2.1 [..]
>    time dd if=/large_file of=/dev/null bs=30k		#for file reads
> 
>    time dd if=/dev/rhdxx of=/dev/null bs=30k		# for raw reads
> 
> Perhaps others could post the results of like tests on other machines and
> software combinations.  It would make an interesting comparison.

Well i just did the crude test, mentioned above, on my Acer-1100 running uPort
386 with a 6085 miniscribe drive (72M), 3:1 interleave (i think):

time dd if=156k_file of=/dev/null bs=30k	/* file */

  156k
--------  ==>  96k/sec
user+sys

time dd if=1243k_file of=/dev/null bs=30k	/* file */

  1243k
--------  ==>  73.9k/sec
user+sys

time dd if=/dev/rdsk/0s0 of=/dev/null bs=30k	/* raw */

 71,680k
--------  ==>  340.9k/sec
user+sys
-- 
Derek Terveer	det at hawkmoon.MN.ORG	uunet!rosevax!elric!hawkmoon!det