On Mon, Mar 01, 2010 at 08:50:47PM -0800, Matthew Dillon wrote:
> Hmm. Do a verbose boot and post the dmesg output. Lets see what
> memory list the kernel gets from the BIOS.
>
> -Matt
OK. Here are the parts in /var/log/messages that seem to have anything
to do with memory. I assume you didn't want the whole output (it's
long) but I could provide it if you need.
kernel: CPU: AMD Opteron(tm) Processor 246 (2004.56-MHz 686-class CPU)
kernel: Origin = "AuthenticAMD" Id = 0xf5a Stepping = 10
kernel:
Features=0x78bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2>
kernel: AMD Features=0xe0500800<SYSCALL,NX,MMX+,LM,3DNow!+,3DNow!>
kernel: Data TLB: 32 entries, fully associative
kernel: Instruction TLB: 32 entries, fully associative
kernel: L1 data cache: 64 kbytes, 64 bytes/line, 1 lines/tag, 2-way associative
kernel: L1 instruction cache: 64 kbytes, 64 bytes/line, 1 lines/tag, 2-way associative
kernel: L2 internal cache: 1024 kbytes, 64 bytes/line, 1 lines/tag, 16-way associative
kernel: real memory = 2147418112 (2047 MB)
kernel: Physical memory chunk(s):
kernel: 0x00001000 - 0x0009efff, 647168 bytes (158 pages)
kernel: 0x008da000 - 0x7ffdffff, 2138071040 bytes (521990 pages)
kernel: avail memory = 2065563648 (1969 MB)
kernel: ACPI MADT: RSDP not in EBDA
kernel: ACPI MADT: RSDP in BIOS mem
kernel: ACPI MADT: MADT in XSDT
kernel: ACPI MADT: LAPIC address 0xfee00000, flags 0x1
...
Also,
New information. We tested various memory configurations.
Dragonfly correctly detected 4 GB of memory with only one of them.
Total RAM
---------
5G 4 x 1G in each slot on one cpu and 4 x 256M in each slot on the
other cpu.
bios reported 5G, dragonfly reported 4G (correct: 32 bit kernel)
* This is the only combination where DF sees 4 GB *
4G 4 x 1G all slots on one cpu
bios reported 4G, dragonfly reported 2G
This is weird. Same configuration as above but remove the 256M
RAM's from the slots for the other cpu and it no longer
detects all the RAM on the first cpu.
4G 1G in slots 0 and 2 on each cpu
bios reported 4G, dragonfly reported 3G
4G 2 x 1G in slots 0 and 1 on each cpu.
bios reported 4G, dragonfly reported 2G
5G 2 x 1G slots 0 and 1 + 2 x 256M in slots 2 and 3 on each cpu
bios reported 5G, dragonfly reported 2G
--
- Vince