Date: Sat, 6 May 1995 08:30:08 -0700 (PDT) From: "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com> To: jbryant@news.iadfw.net (Jim Bryant) Cc: davidg@Root.COM, freebsd-hackers@FreeBSD.org Subject: Re: problems with 0412 Message-ID: <199505061530.IAA11025@gndrsh.aac.dev.com> In-Reply-To: <199505061113.GAA02679@news.iadfw.net> from "Jim Bryant" at May 6, 95 06:13:48 am
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> > In reply: > > To: Jim Bryant <jbryant@news.iadfw.net> > > cc: dyson@root.com > > Subject: Re: problems with 0412 > > From: David Greenman <davidg@root.com> > > Date: Thu, 04 May 1995 23:20:47 -0700 > > > > >i've noticed a few quirks in 0412. > > > > > >case: swap-bound under continous heavy network load. > > > > > >[64M RAM, 128M swap space, average 80-100% into swap during peak load > > >periods] > > > > > >after long sessions of swap-bound activities, not all of the vm space is > > >being reclaimed, thus requiring reboot. garbage-collection problem? > > > > How much space? > > > > -DG > > in the 20-30% range. > > also, a few hours after i wrote that, i swapped the 16meggers for > 32meggers for 128meg. How many chips are on each simm? I have seen the followin notice comming with some motherboards now, and it may explain a problem I saw almost a year ago with putting 32MB simms in the Intel Plato boards: (This is from the ASUS PCI/I-P54TP4 manual) --- begin --- SIMM MODULE RESTRITION After this manual was printed, it was discovered that some us- ers have been attempting to use memory modules that achieve a large total capacity by using large numbers of low density DRAM chips mounted on one module PCB. This solution results in modules that exceeed the design specifications of the DRAM memory subsystem. It is therefore important that you observe the following restriction in selecting modules for use with this mainboard. 24-CHIP TOTAL CHIP LIMIT Do not use SIMM modules with more than 24 chips per module with this mainboard. MOdules with more than 24 chips exceed the desgin spcifications of the memory subsystem and will cause unre- liable operation. DO NOT use 32 or 36-chip SIMM modules with this mainboard. --- end --- Out of curosity what model/make motherboard is this? > > the kernel seems to only see 64megs of that on boot. it also seems > [possible disk problem] at around 50% swap on the secondary scsi controller. > this curses lotsa kernel prints, including one about pagein, it has since > spontaneously rebooted various times, and required operator intervention > twice. i'm sure this has to do with the vm... You need to tweak some options for >64MB, the way that memory is reported is non-standard for any board with more than 64MB on it. I will let David answer that as I am not sure what the correct tweaks are any more. ... -- Rod Grimes rgrimes@gndrsh.aac.dev.com Accurate Automation Company Custom computers for FreeBSD
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