[comp.sys.apple2] DMA SCSI card benchmarks

UD182050@NDSUVM1.BITNET (Mike Aos) (07/18/90)

I've been fighting with this stupid thing for about a week now, and I
finally figured out that my SCSI terminator was a little off, and the DMA
card wouldn't stand for it.  Anyway, all is working (for the moment), and I
did some benchmarks in case anyone was interested.

Mike

Drive     Linear Read Random Read OS Overhead  DMA switch on
Chinook CT40 9.40      33.47        .86            no
             2.69      35.98        .86            yes
Rodime 45M   4.57      25.45        .88            no
             1.26      27.04        .86            yes
/RAM5        4.35       7.16        .70            yes

All timings taken with ProSel-16, both drives formatted 1:1, all times
in milliseconds.

BTW-This is on a IIgs w/2M GS-RAM+ and newest TWGS.


-------
Mike

UD182050@NDSUVM1 (.Bitnet?)        "Share and Enjoy"
UD182050@VM1.NoDak.Edu                    -Sirius Cybernetics Corporation
                    Apple IIgs 'till I can afford a NeXT!
I got LOTSA opinions.  You want one?  You can have it!