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- Path: sparky!uunet!spool.mu.edu!wupost!cs.utexas.edu!sun-barr!sh.wide!wnoc-kyo!kuis!aegis!davidg
- From: davidg@aegis.or.jp (Dave McLane)
- Newsgroups: comp.unix.sysv386
- Subject: Re: >16MB on a 486
- Message-ID: <2668@aegis.or.jp>
- Date: 13 Sep 92 23:31:19 GMT
- References: <2AB008AB.42F2@telly.on.ca> <BuFF20.1tq@constant.demon.co.uk> <2659@aegis.or.jp> <BuILEt.1MG@virtech.uucp>
- Organization: Aegis Society, Kyoto Japan
- Lines: 40
-
- cpcahil@virtech.uucp (Conor P. Cahill) writes:
-
- >davidg@aegis.or.jp (Dave McLane) writes:
-
- >>>MEMRANGE=0-640K:0,1M-64M:0
-
- >>I don't see such a file for ISC 3.2 v3.0. Anybody have any ideas?
-
- >It cannot be done with ISC 2.2 or 3.0 and the testing that I did with 2.0.2
- >made me believe that regarless of the setting of this file the
- >system would start swapping at 16MB, so even though you can set this
- >parameter in 2.0.2, I'm not sure it has any benefitial effect other
- >than getting the kernel to say it sees more than 16MB.
-
- >The only way that you can get more than 16MB in 3.0 is with an EISA
- >system and a non-dma controller or an EISA controller in EISA mode.
- >(i.e. an IDE drive, an ST-506 controller, most ESDI controllers, a
- >Future Domain controller, an Adaptec 1740, Bustek 742, etc)
- >Crontrollers that down work in this mode: adaptec 1542, bustek 542 and
- >probably others. Remember, this is only when you have an EISA motherboard.
-
- Thanks for the information. I guess if I want 16MB+ I'll need to
- get an EISA then.
-
- However, sliding on the subject, right now I'm trying to convince
- myself that 16 MB on a x86-class machine may be about right for the
- kind of programs people run on my system (mail and news). If I could
- fit more I think it might put too much of a load on the CPU and
- things would start slowing down. As it is right now, I'm moving the
- unpacking of news to another machine and it really slows things down
- so maybe the way to work around the 16MB barrier is to add more
- machines on a TCP/IP LAN.
-
- Dave
-
- --
- Dave McLane
- JUNET: davidg@aegis.or.jp (ONLY within Japan: post otherwise)
- Nagaokakyoshi, Kyoto Japan Tel: +81-75-951-1168 Fax: +81-75-957-1087
-
-