Re: only 3 of 4GB memory available on amd64 8.1-RC1

From: Andreas Tobler <andreast-list_at_fgznet.ch>
Date: Sat, 19 Jun 2010 19:52:18 +0200
On 19.06.10 19:27, Andrey Fesenko wrote:
> On Sat, Jun 19, 2010 at 9:16 PM, Andreas Tobler<andreast-list_at_fgznet.ch>  wrote:
>> Hi all,
>>
>> I got my hands on a t60 with 4GB of RAM (BIOS displays it)
>>
>> And I installed 8.1-RC1 on it:
>>
>> FreeBSD 8.1-RC1 #0: Mon Jun 14 13:40:28 UTC 2010
>>     root_at_mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64
>> Timecounter "i8254" frequency 1193182 Hz quality 0
>> CPU: Intel(R) Core(TM)2 CPU         T5600  _at_ 1.83GHz (1828.76-MHz K8-class
>> CPU)
>>   Origin = "GenuineIntel"  Id = 0x6f6  Family = 6  Model = f  Stepping = 6
>>
>> 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,SS,HTT,TM,PBE>
>>   Features2=0xe3bd<SSE3,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM>
>>   AMD Features=0x20100800<SYSCALL,NX,LM>
>>   AMD Features2=0x1<LAHF>
>>   TSC: P-state invariant
>> real memory  = 4294967296 (4096 MB)
>> avail memory = 3092344832 (2949 MB)
>> ACPI APIC Table:<LENOVO TP-79>
>> FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
>> FreeBSD/SMP: 1 package(s) x 2 core(s)
>>   cpu0 (BSP): APIC ID:  0
>>   cpu1 (AP): APIC ID:  1
>>
>>
>>
>> Do I need to configure something special to get the full 4GB of memory?
>>
>> I only found the PAE hint, but this is for x86 machines, right?
>>
> I think this BIOS specific, may be video rezerv
>
>
> FreeBSD 9.0-CURRENT #0 r208284: Wed May 19 09:34:15 MSD 2010
>      andrey_at_my_book:/home/andrey/obj/obj/home/andrey/src_head/sys/MY_BOOK amd64
> WARNING: WITNESS option enabled, expect reduced performance.
> Timecounter "i8254" frequency 1193182 Hz quality 0
> CPU: Intel(R) Core(TM)2 CPU         T5600  _at_ 1.83GHz (1828.77-MHz K8-class CPU)
>    Origin = "GenuineIntel"  Id = 0x6f2  Family = 6  Model = f  Stepping = 2
>    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,SS,HTT,TM,PBE>
>    Features2=0xe3bd<SSE3,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM>
>    AMD Features=0x20100800<SYSCALL,NX,LM>
>    AMD Features2=0x1<LAHF>
>    TSC: P-state invariant
> real memory  = 4294967296 (4096 MB)
> avail memory = 3339923456 (3185 MB)

Thanks. I'll explore the bios a bit more then.

Andreas
Received on Sat Jun 19 2010 - 15:52:22 UTC

This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:40:04 UTC