Date: Tue, 21 Nov 2006 14:00:43 -0500 From: Chuck Swiger <cswiger@mac.com> To: Zbigniew Szalbot <zbyszek@szalbot.homedns.org> Cc: freebsd-questions@freebsd.org Subject: Re: changing swap size (fwd) Message-ID: <45634CDB.80203@mac.com> In-Reply-To: <Pine.BSF.4.64.0611211153250.4053@192.168.11.51> References: <Pine.BSF.4.64.0611211153250.4053@192.168.11.51>
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Zbigniew Szalbot wrote: > As an update for RAM problems, it turned out I had to install BX SDRAM > memory to get it to work. Interestingly enough, the original memory was > not labeled as BX... but then... all that matters is that I have now > 512MB RAM which is not too much but all I could afford to get at this > point (BX RAM is much more expensive). I am interested whether this > added RAM will minimize/exclude swap use. The added RAM will certainly help to minimize or reduce swapping, if it is occurring. But you might want to post the output of "vmstat -s" after the system has been under normal load for us to evaluate how much benefit you're likely to see. With regard to what I assume you have is a 440BX chipset, the RAM requirements for it seem to be [1]: > Description > intel BX chipset won't recognize SDRAM correct. > > Solution > intel 440BX chipset has certain limitations: > > 1. A maximum of 1GB RAM can be adressed. > 2. Only SDRAM modules consisting of max. 64MBit (unbuffered) or 128MBit (buffered / registered) chips are supported. > > Largest supported SDRAM modules (unbuffered): > 4 x 64MBit = 32MB > 8 x 64MBit = 64MB > 16 x 64MBit = 128MB (double sided OR double height) > 32 x 64MBit = 256MB (double sided AND double height -> KEEP AWAY !) > > Largest supported SDRAM modules (registered / buffered -> look for row of small buffering chips on module): > 4 x 128MBit = 64MB > 8 x 128MBit = 128MB > 16 x 128MBit = 256MB (double sided OR double height) > 32 x 128MBit = 512MB (double sided AND double height -> KEEP AWAY !) -- -Chuck [1]: Second or third hit for "BX SDRAM" gives: www.plasma-online.com/english/help/solutions/bx_chipset_sdram.html
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