Date: Thu, 15 May 2008 20:24:15 +0200 From: "Julian Stacey" <jhs@berklix.org> To: freebsd-hackers@freebsd.org Subject: Not seeing enough memory though its there. Message-ID: <200805151824.m4FIOFBm000937@fire.js.berklix.net>
next in thread | raw e-mail | index | archive | help
Hi Hackers cc Gary J,
On a Compaq Pressario 2254 with 7.0-Release & Generic kernel, I'm
not seeing enough RAM: A 128M DIM reports as 56M, a 256M reports as
96M. Any ideas please ?
dmesg
FreeBSD 7.0-RELEASE #0: Sun Feb 24 19:59:52 UTC 2008
root@logan.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD-K6tm w/ multimedia extensions (233.03-MHz 586-class CPU)
Origin = "AuthenticAMD" Id = 0x562 Stepping = 2
Features=0x8001bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,MMX>
AMD Features=0x400<<b10>>
real memory = 100663296 (96 MB)
avail memory = 84484096 (80 MB)
pnpbios: Bad PnP BIOS data checksum # Dont know why bad
With a 128M RAM
Without hw.physmem= in /boot/loader.conf
dmesg
real memory = 58720256 (56 MB)
avail memory = 43507712 (41 MB)
sysctl -a | grep mem
hw.physmem: 45572096
hw.usermem: 33267712
hw.realmem: 58720256
With /boot/loader.conf hw.physmem=134217728
same as above except
hw.usermem: 33312768
With a 256 RAM
power on Bios auto resizes to about 96M !
Without hw.physmem=
dmesg
real memory = 100663296 (96 MB)
avail memory = 84484096 (80 MB)
sysctl -a | grep mem
hw.physmem: 87515136
hw.usermem: 74280960
hw.realmem: 100663296
With /boot/loader.conf hw.physmem=268435456
same as above except
hw.usermem: 74141696
This Compaq has just 1 RAM slot. The RAM DIMs used:
128M RAM (original far as I know from PC in Germany)
Module Paper Label: 128MB Sync 133 MHz CL3; 168 pin DIM, 13.3 x 3 cm,
Slots: 1 in middle, + 1 @ 2.45 mm from end with pins 1 & 85
2 sides x 8 chips: Ramos 0131, RC28S0801B1-13AC
256M borrowed from another PC bought in UK
(with 2 completely different RAM sources, unlikey both might be
accidentaly or deliberately mislabeled (as occasionals occurs
re CT mag article on cache chips some years back)
Module Paper Label: IRL DEM DP133 064323E
PC133 333 520 256MB
0137-2328-062[56]
2 sides x 8 chips: Hynix 132A, HY57V2882DAT-H
I did check hw.physmem can set (reduce at least) in 7.0 /boot/loader.conf,
on another laptop, after a reboot, from 512M to 256M).
Julian
--
Julian Stacey: BSDUnixLinux C Prog Admin SysEng Consult Munich www.berklix.com
Mail just Ascii plain text. HTML & Base64 text are spam.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200805151824.m4FIOFBm000937>