Kernel only detection 2 GB of memory on AMD
Hi.
Just wondering if there are there any known issues with detecting the
memory. We have an AMD Opteron dual processor machine, and Dragonfly
only sees 2 GB with 4 GB in the machine. This is Dragonfly
v2.5.1.901.g48d80-DEVELOPMENT. We tried with both a regular default
kernel that installed from a snapshot ISO image and an SMP enabled
kernel that I compiled.
It also only sees 2GB on Dragonfly 2.4.1-release.
We tested with 4GB and 5GB of RAM.
The BIOS sees the full amount of memory.
The motherboard is a Iwill DK8S2-SATA with two single core AMD
Opteron(tm) processors.
dmesg shows
DragonFly v2.5.1.901.g48d80-DEVELOPMENT #0: Thu Feb 25 00:16:40 CST 2010
vince@quark.hightek.org:/usr/obj/u1/dragonfly/dfsrc/src/sys/GENERIC
TSC clock: 2004881030 Hz, i8254 clock: 1193382 Hz
CPU: AMD Opteron(tm) Processor 246 (2004.56-MHz 686-class CPU)
Origin = "AuthenticAMD" Id = 0xf5a Stepping = 10
Features=0x78bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2>
AMD Features=0xe0500800<SYSCALL,NX,MMX+,LM,3DNow!+,3DNow!>
real memory = 2147418112 (2047 MB)
avail memory = 2065563648 (1969 MB)
...
DragonFly/MP: Multiprocessor motherboard
cpu0 (BSP): apic id: 0, version: 0x00040010
cpu1 (AP): apic id: 1, version: 0x00040010
...
Top shows
Memory: 6020K Active, 4384K Inact, 89M Wired, 44M Buf, 1898M Free
sysctl also shows 2GB.
--
Regards,
Vince
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