Date: Fri, 12 Dec 1997 01:03:01 -0500 From: Norman C Rice <nrice@emu.sourcee.com> To: ringlord@bbs.dcoisp.net Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Memory and kernel question. Message-ID: <19971212010301.32779@emu.sourcee.com> In-Reply-To: <TCPSMTP.17.12.11.13.16.10.3047923923.8988@bbs.dcoisp.net>; from ringlord@bbs.dcoisp.net on Thu, Dec 11, 1997 at 01:16:10PM -0500 References: <TCPSMTP.17.12.11.13.16.10.3047923923.8988@bbs.dcoisp.net>
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On Thu, Dec 11, 1997 at 01:16:10PM -0500, ringlord@bbs.dcoisp.net wrote: > Hello to all. > I am running freebsd 2.2.5. I have recently upgraded my freebsd box > from 32 megs of ram to 128 megs of ram. The first time the 2.2.5 > GENERIC kernel saw the new memory, the memory was reported correctly. I > thought I was on easy street then. > After halting the system and rebooting the machine, the kernel only > reported about 100 megs of ram and only had about 94 megs availible. I > am not sure what happened between the initial detection and the halting > rebooting to cause the kernel to see less ram. > I next went to the freebsd mailing list archives and did some searching > to see if I could find anything related. There was a message from June > of this year that talked about building a kernel with option MEMSIZE > equal to the amount of ram he had in his machine. > Oh great. Time to build a new kernel? :) > After reading the handbook and looking at /usr/src/sys/i386/conf/GENERIC, > I realized that option MEMSIZE is not there! :) > So. My assumption is that it is no longer needed and freebsd determines > this on its' own. Correct assumption provided the memory is functioning. > So. What would cause ram to be reported correctly on one attempt, and > be miss reported the next time? Humm. Infant mortality? It's possible that one SIMM died (assuming you have four 32M SIMMs). It is also possible that the SIMM isn't properly seated. Try reseating the SIMM modules, but be sure you're wearing an ESD strap connected to ground, otherwise your system may report 64M of memory the next time you reboot it. :-) > I have tried rebooting several times, with the same effect now, still > only 94 megs avail. Good. A repeatable problem is a lot easier to track down than one that's intermittent. :-) > Any assistance or pointers would be greatly appreciated. > BTW. I will send log files if needbe, just didn't want to clutter up > the list if something was simply fixed. > Thanks. > Jeremy > > -- Regards, Norman C. Rice, Jr.
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