Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!gem.mps.ohio-state.edu!apple!netcom!mau From: mau@netcom.UUCP (Rich Mau) Newsgroups: comp.sys.ibm.pc Subject: Re: Slow diskdrive with DESKview Message-ID: <2521@netcom.UUCP> Date: 25 Sep 89 17:27:12 GMT References: <170@sluga.UUCP> <688@fiver.UUCP> <111019@nstar.UUCP> Reply-To: mau@netcom.UUCP (Rich Mau) Organization: none Lines: 19 I assume that you are aware of the affects of interleave - as interleave gets closer to 1:1 (i.e. sequential sectors adjacent) transfer rates get faster, until the program does not request the next sector "soon enough", in which case the disk drive must make a complete revolution before it can read the next sector. Your setup may have this problem. Also, some disk controller manufacturers that do data caching have "special cased" the transfers that Core Test does. This causes very high transfer rates to be reported by Core Test where much lower rates would be reported for reads to another area of the disk. ******************************************************** * Rich Mau ...!{apple,amhdal}!netcom!mau * ******************************************************** -- ******************************************************** * Rich Mau ...!{apple,amhdal}!netcom!mau * ********************************************************