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Newsgroups: comp.unix.bsd.netbsd.misc Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!simtel!chi-news.cic.net!uwm.edu!spool.mu.edu!howland.reston.ans.net!Germany.EU.net!zib-berlin.de!news.rrz.uni-hamburg.de!news.Hanse.DE!wavehh.hanse.de!cracauer From: cracauer@wavehh.hanse.de (Martin Cracauer) Subject: Re: Swap help Message-ID: <1995Oct26.081843.17791@wavehh.hanse.de> Lines: 24 Organization: BSD User Group Hamburg References: <45vk3u$1e0r@msunews.cl.msu.edu> Date: Wed, 18 Oct 95 11:34:18 GMT Lines: 25 julianje@msu.edu (Jere Julian) writes: >First, the rundown: Intel 486DX33, 20MB RAM, Adaptech 1452CF SCSI Controller, >2 SCSI disks (0=Maxtor 7345-SCSI 329MB; 1=Quantum LPS270S 258MB) >When the machine tries using the swap memory I get a string of errors repeating: >aha0: DMA beyond end of ISA >sd0: Not queued >.. changing to sd1 later. The system then crashes often dumping cores of its >proceses. >Any suggestions would be greatly appreciated. Please email responses as I am on >an "expensive" dialup. You can't use more than 20 MB RAM with your ISA Adaptec. FreeBSD has 'Bounce buffers' to solve this problem. That involes one more copy of the data transferred, don't know who much that affects performance. Martin -- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Martin Cracauer <cracauer@wavehh.hanse.de> - Fax +49 40 522 85 36 BSD User Group Hamburg, Germany - No NeXTMail anymore, please. Copyright 1995. Redistribution via Microsoft Network is prohibited