Date: Wed, 9 Aug 2006 08:32:29 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-hardware@freebsd.org Cc: Julian Stacey <jhs@berklix.org> Subject: Re: Real and available memory? Message-ID: <200608090832.30259.jhb@freebsd.org> In-Reply-To: <44D9B553.6030003@bulinfo.net> References: <200608090908.k79988pY086073@fire.jhs.private> <44D9B553.6030003@bulinfo.net>
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On Wednesday 09 August 2006 06:13, Krassimir Slavchev wrote: > Julian Stacey wrote: > > Reference: > > > >> From: Krassimir Slavchev <krassi@bulinfo.net> > >> Date: Wed, 09 Aug 2006 11:46:33 +0300 > >> Message-id: <44D9A0E9.30608@bulinfo.net> > >> > > > > Krassimir Slavchev wrote: > > > >> Julian H. Stacey wrote: > >> > >>> Krassimir Slavchev wrote: > >>> > >>> > >>>> Julian H. Stacey wrote: > >>>> > >>>> > >>>>> Krassimir Slavchev wrote: > >>>>> > >>>>> > >>>>> > >>>>>> Hello, > >>>>>> > >>>>>> I have Vortex86-6082 with 128Mb AMI bios. > >>>>>> > >>>>>> Why the kernel reports only 80 MB available memory? > >>>>>> Is this related to BIOS or kernel settings? > >>>>>> > >>>>>> dmesg output: > >>>>>> > >>>>>> Copyright (c) 1992-2006 The FreeBSD Project. > >>>>>> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 > >>>>>> The Regents of the University of California. All rights reserved. > >>>>>> FreeBSD 6.1-STABLE #0: Wed Jul 26 10:09:06 EEST 2006 > >>>>>> root@krassi:/usr/obj/usr/src/sys/TINYBSD > >>>>>> Timecounter "i8254" frequency 1193182 Hz quality 0 > >>>>>> CPU: Pentium (166.61-MHz 586-class CPU) > >>>>>> Origin = "SiS SiS SiS " Id = 0x505 > >>>>>> real memory = 125829120 (120 MB) > >>>>>> avail memory = 84332544 (80 MB) > >>>>>> kbd1 at kbdmux0 > >>>>>> ... > >>>>>> > >>>>>> > >>>>>> > >>>>> Does the mboard BIOS on monitor at boot recognise all 128 M ? > >>>>> > >>>>> I've seen boards that only recognised 1/4 of the SIM size. > >>>>> 80 seems a bit of an odd (non hex) number though. > >>>>> > >>>>> > >>>>> > >>>>> > >>>> Yes, at boot the board recognizes 128Mb. The RAM is embedded on the board. > >>>> The kernel reports real 120 Mb because maybe 8 Mb is used by video card. > >>>> I don't know why exact 80Mb is reported but 80 = 64+16. > >>>> > >>>> > >>> Have you tried unplugging every board (inc. ethernet scsi raid etc) > >>> & plugging in a different (modest, old as possible. less demanding) > >>> graphic card ? Maybe that'd give a clue, maybe your graphics card > >>> is taking more than 8M ? > >>> > >>> > >>> > >> No, I can't unplug anything, see: > >> http://www.icop.com.tw/products_detail.asp?ProductID=119 > >> > > > > Interesting little board, (might be of interest to other freebsd.org > > mail lists eg small, real time ). > > > > That URL specifies > > 128MB SDRAM > > ... > > AGP Rev.2.0 compliant > > Shared system memory up to 64MB (Default 8 MB) > > Maybe BIOS is no longer defaulting to 8 Meg ? > > Checkable / Settable in BIOS ? > > > > > I can't find anything related to video memory in the BIOS but it seems > to be correct > real memory = 120 Mb reported by the kernel. > My question is why the available memory is only 80Mb? Are you using an MFS root or a really large kernel? -- John Baldwin
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