Date: Sun, 24 Dec 2006 08:36:10 -0300 From: Olivier Gautherot <ogautherot@vtr.net> To: freebsd-hardware@freebsd.org Subject: Re: memory holes Message-ID: <200612240836.11747.ogautherot@vtr.net> In-Reply-To: <458D67CC.1050102@dnainternet.net> References: <458D36E4.9000900@dnainternet.net> <458D67CC.1050102@dnainternet.net>
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Hi Erik! Mixing memory modules with different speeds is generally a dangerous thing to do. I would strongly recommend you match them all. The fact that your 384MB configuration worked is in no way a garantee that the 512MB config you describe should work (I would even say that it is a miracle that it ever worked in the first place). The problems you describe with the various *BSD sound very much like soft errors - which may happen with out-of-spec bus frequency. Merry Christmas Olivier On Saturday 23 December 2006 14:30, Erik Udo wrote: > OK. I've tested OpenBSD and NetBSD. > > Both find 512MB of ram, but.. > NetBSD crashes after boot stage when it starts to load the kernel. > (thanks NetBSD team for not building the kernel image with debugging > symbols, but you did build it with DDB) > > OpenBSD finds 512MB of ram too, but... > it wont find my hard disk, even thought it has wd0 as a hard disk in dmesh. > > To add to my previous post, i tested with 128MB PC100 + 32MB PC100. Both > memory modules was found by FreeBSD and put to use. > > Which leads me to the conclusion: Why can't FreeBSD use PC133 memory > when OpenBSD can? Did someone forget to port drivers for memory modules? :P > > Erik Udo wrote: > > I upgraded my hardware and software yesturday, and for some reason, > > FreeBSD only 'detects' 128MB of the memory, when the BIOS is clearly > > seeing 512MB. OpenBSD also finds 512MB of memory. > > > > So i added one 128MB ECC memory. There was one 128MB PC100 and 256MB > > PC133 memory before, and it worked fine on 6.2-PRERELASE. > > > > Now that i upgraded to 6.2-RC1, from 6.2-PRERELEASE and added the 128MB > > memory to the 384MB i had, the kernel started giving me this error on > > the first line of the kernel output: > > "Too many holes in the physical address space, giving up" > > > > Now, i searched google for anything, and found this earlier thread: > > http://www.mail-archive.com/freebsd-hardware@freebsd.org/msg01624.html > > > > I also found this: > > http://lists.freebsd.org/pipermail/freebsd-hackers/2005-October/013932.ht > >ml > > > > Like the previous post says, the memory was found after the increased > > PHYSMAP_SIZE. I increased mine to 2*32, later 2*128. It didn't work. > > > > Also someone told me to add this line to the kernel config: > > options MAXMEM=524288 > > > > That didn't work either. > > > > I also tried to toggle all the bios settings on the computer, i even > > upgraded the bios. Nothing. > > > > Now i found out that OpenBSD sees 512MB of memory, so there must be some > > kind of trick to make FreeBSD recognize that memory too. > > > > Here is some output of my verbose boot: > > > > with 512MB: > > real memory = 134234112 (128 MB) > > Physical memory chunk(s): > > 0x0000000000001000 - 0x000000000009efff, 647168 bytes (158 pages) > > 0x0000000000100000 - 0x00000000003fffff, 3145728 bytes (768 pages) > > 0x0000000000c25000 - 0x0000000007d82fff, 118874112 bytes (29022 pages) > > avail memory = 121798656 (116 MB) > > > > Anyone have any ideas? > > > > Thanks, > > Erik > > _______________________________________________ > > freebsd-hardware@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-hardware > > To unsubscribe, send any mail to > > "freebsd-hardware-unsubscribe@freebsd.org" > > _______________________________________________ > freebsd-hardware@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hardware > To unsubscribe, send any mail to "freebsd-hardware-unsubscribe@freebsd.org" -- Olivier Gautherot Email: olivier@gautherot.net LinkedIn: http://www.linkedin.com/in/ogautherot MSN: ogautherot@hotmail.com
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