Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uflorida!haven!decuac!mountn.dec.com!memit.dec.com From: shatara@memit.dec.com (Chris Shatara) Newsgroups: comp.sys.apple Subject: Re: SCSI TIMER & V5.0 Message-ID: <740@mountn.dec.com> Date: 1 Sep 89 00:19:46 GMT Sender: news@mountn.dec.com Organization: Digital Equipment Corporation Lines: 47 > >> The improvement was from the interleave. The reason I say this Is that I >> ran the disk for a month under V4.0 BEFORE I got a copy of SCSI hacker and >> Timer. I never ran the hard disk under System software V3.2. > >I'm sorry, I'm still confused. Does this mean you didn't format your >drive originally to the optimum interleaf using a SCSI Timer (or compat.)??? >Therefore, your improvement was from doing this? > Correct. I ran the first month with whatever interleave the disk had out of the box, probably 1:1 as the dealer I bought it from also sells the drives for the mac. I didn't get a copy of Timer until about 4 weeks later. >> I just finish this procedure again with new system disk. As before I ran >> a while with the old interleave settings and by changing them was able to >> reduce the read times by another 15% (according to SCSI timer). > >When you say "old interleaf settings" do you mean "the Apple defined" >settings? (ie. 1:1 or 1:2) Or do you mean "your previously optimized" >settings? (ie. optimized at, say, 9 with 4.0, and now 5 with 5.0) I mean my previously optimized settings under 4.0 . System Software 4.0 4.0 5.0 5.0 interleave stock $C $C 5 READ value 90 62 91 50 > >(Note: the Seagate ST138N is a fast 30 meg. drive. If you ran with Apple's I'm really delighted with it and V5.0....nice machine! ============================================================================= | Chris Shatara | Internet: shatara@memit.dec.com | | | shatara@memit.enet.dec.com | | Opinions expressed are | DEC Easynet: memit::shatara | | mine and mine only! | UUCP: ...!decwrl!memit!shatara | =============================================================================