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Xref: sserve comp.unix.bsd:12581 comp.os.linux:54525 comp.os.386bsd.misc:916 Path: sserve!newshost.anu.edu.au!munnari.oz.au!yarrina.connect.com.au!belfast.dcd.wa.gov.au!belfast.dcd.wa.gov.au!not-for-mail From: juliane@belfast.dcd.wa.gov.au (Julian Elischer) Newsgroups: comp.unix.bsd,comp.os.linux,comp.os.386bsd.misc Subject: Re: BSD UNIX Date: 10 Sep 1993 15:56:12 +0800 Organization: Dept of Community Development, Perth, Australia Lines: 34 Distribution: world Message-ID: <26pbus$ni8@belfast.dcd.wa.gov.au> References: <michaelv.747102277@ponderous.cc.iastate.edu> <CCuHI1.M97@eunet.ch> <CCyo6n.LMK@ssesco.com> <1993Sep8.004749.2438@sophia.smith.edu> NNTP-Posting-Host: belfast.dcd.wa.gov.au In article <1993Sep8.004749.2438@sophia.smith.edu> jfieber@sophia.smith.edu (J Fieber) writes: >Well heck, my pokey old un-accelerated Amiga 2000 got better disk >i/o performance than this spiffy new 486 I'm using now. I'm >using the same drives with an (expensive!) Adaptec 1542C. Pretty >darn depressing I must say. The price of EISA controllers >amounts to highway robbery too. It's not all the fault of the architecture. When I first wrote these drivers I wrote them for MACH2.5. this is a closely related OS and I was running it on the same hardware (in fact, the same MACHINE) performance under 386bsd was always considerably less than performance under mach 2.5, on the same PC. This is basically an artifact of the newness of the vm and io systems within 386bsd and derivatives. Work is underway to rebuild these systems, under both NetBSD and FreeBSD (no, it's not a duplication, both groups share info) I expect that within the next 6 months there will be great improvements in filesystem throughput. Don't blame bill, or the people who did the vm port.. it's just new code. it needs a good shakedown and it is getting it. things will improve. The big thing to remember is that until 0.1, the emphasis was on just getting it running. Now that it seems to run with some reliablility, we can go back an look at what is going on inside. julian