Date: Sat, 21 Apr 2007 18:14:29 +0400 From: "Artem Kuchin" <matrix@itlegion.ru> To: <freebsd-stable@freebsd.org> Subject: PAE does not give any ram increase, why? Message-ID: <004b01c78421$062195c0$0c00a8c0@Artem> References: <Pine.BSF.3.96.1070421185323.7357E-100000@gaia.nimnet.asn.au>
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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? -- Regards, Artem
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