System performance

[Steve Nuchia]

In article <932 at lakesys.UUCP> davef at lakesys.UUCP (Dave Fenske) writes:
>When there is a disk intensive program running, if there is a lot of sequential
>I-O, the performance level of SCO Xenix seems to drop to nill (NULL).  This

I have observed a similar phenomenon on my Bell Tech 386 3.0 system.
In particular, I can run
	dd if=/dev/dsk/0s3 of=/dev/null bs=16k
for instance and absolutely nothing else gets serviced on that disk
until I kill it.  I interpret this as an effect of the elevator
algorithm.  It would have to be modified with some kind of fairness
provision to prevent this behaviour.
-- 
Steve Nuchia	      South Coast Computing Services
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