Artem Kuchin wrote:
Hello!
I've upgraded one of my servers today.
Now it is
Asus P5p800-VM
Pentium D 3.0Ghz
4GB RAM (4x1 GB)
3WARE raid5
FreebSD 6.2 cvsed today compiled from sources.
after that i decided to try PAE. It runs just fine but
when i compare available memory with and without
pae i do not see any difference.
At kernel boot with PAE it says:
pr 21 18:01:30 osiris kernel: ACPI APIC Table: <A M I OEMAPIC >
Apr 21 18:01:30 osiris kernel: Timecounter "i8254" frequency 1193182 Hz
quality 0
Apr 21 18:01:30 osiris kernel: CPU: Intel(R) Pentium(R) D CPU 3.00GHz
(3000.33-MHz 686-class CPU)
Apr 21 18:01:30 osiris kernel: Origin = "GenuineIntel" Id = 0xf64
Stepping = 4
Apr 21 18:01:30 osiris kernel:
Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2
Apr 21 18:01:30 osiris kernel:
Features2=0xe49d<SSE3,RSVD2,MON,DS_CPL,EST,CNTX-ID,CX16,<b14>,<b15>>
Apr 21 18:01:30 osiris kernel: AMD Features=0x20000000<LM>
Apr 21 18:01:30 osiris kernel: AMD Features2=0x1<LAHF>
Apr 21 18:01:30 osiris kernel: Cores per package: 2
Apr 21 18:01:30 osiris kernel: real memory = 4017881088 (3831 MB)
Apr 21 18:01:30 osiris kernel: avail memory = 3933429760 (3751 MB)
The real and avail memory sizes are the same w/o PAE.
Then i do
sysctl -a | grep hw | grep mem
and i always see
hw.physmem: 4012244992
hw.usermem: 3861307392
hw.realmem: 4017881088
hw.pci.host_mem_start: 2147483648
the number do not change with or without PAE
Maybe i look in the wrong place?
I'm not going to waste my time explaining for the hundredth time how the
x86 memory layout works. If you want to recover the missing 256MB, go
look in your BIOS for an option about memory hole remapping.
Scott
_______________________________________________
freebsd-stable@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-stable
To unsubscribe, send any mail to "[EMAIL PROTECTED]"
