Real and available memory?

Wed Aug 9 20:32:56 UTC 2006

   John Baldwin wrote:

On Wednesday 09 August 2006 08:45, Krassimir Slavchev wrote:

John Baldwin wrote:

On Wednesday 09 August 2006 06:13, Krassimir Slavchev wrote:

Julian Stacey wrote:

Reference:

From:           Krassimir Slavchev [1]<krassi at bulinfo.net>
Date:           Wed, 09 Aug 2006 11:46:33 +0300
Message-id:     [2]<44D9A0E9.30608 at 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 at 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
...

...

Are you using an MFS root or a really large kernel?

Yes, MFS root is 32 Mb and kernel is ~3.4Mb

Well, that's where the missing 40 meg is. :)  The kernel text (including
any modules and preloaded mfsroot's) aren't include in the 'avail memory'
count.

   This is not where the memory goes.
   The MFS root is probably not allocated yet at this point.
--
------------ Jin Guojun ----------- v --- [3]jin at george.lbl.gov ---
Distributed Systems Department          [4]http://www.dsd.lbl.gov/~jin
Lawrence Berkeley National Laboratory,  Berkeley, CA 94720

References

   1. mailto:krassi at bulinfo.net
   2. mailto:44D9A0E9.30608 at bulinfo.net
   3. mailto:jin at george.lbl.gov
   4. http://www.dsd.lbl.gov/~jin