[colug-432] 64bit OS Not Seeing All RAM

Sun Jun 7 16:14:14 EDT 2015

On 06/07/2015 02:48 PM, Mike Plemmons wrote:
>
>
> On Jun 7, 2015 1:37 PM, "tom" <thomas.w.cranston at gmail.com 
> <mailto:thomas.w.cranston at gmail.com>> wrote:
> >
> > Installed LinuxMint 17 64bit ver2 on Dell Optiplex 210L. 64bit P4,
> > Hyperthreading enabled = running in 64bit mode. New Crucial 4 GB RAM (2
> > 2GB sticks), Onboard video - Video Memory Size Is set at 8 MB. I only
> > have 3 GB RAM available. Setup sees 4 GB of RAM. Since I am running 64
> > bit OS all of the RAM should be available. Is there something about the
> > 64 bit P4 that is causing this problem.
> >
> > $ cat /proc/cpuinfo
> > processor : 0
> > vendor_id : GenuineIntel
> > cpu family : 15
> > model : 4
> > model name : Intel(R) Pentium(R) 4 CPU 3.00GHz
> > stepping : 9
> > microcode : 0x3
> > cpu MHz : 2992.563
> > cache size : 1024 KB
> > physical id : 0
> > siblings : 2
> > core id : 0
> > cpu cores : 1
> > apicid : 0
> > initial apicid : 0
> > fpu : yes
> > fpu_exception : yes
> > cpuid level : 5
> > wp : yes
> > flags : 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 ht tm pbe syscall nx lm
> > constant_tsc pebs bts nopl pni dtes64 monitor ds_cpl cid cx16 xtpr 
> lahf_lm
> > bogomips : 5985.12
> > clflush size : 64
> > cache_alignment : 128
> > address sizes : 36 bits physical, 48 bits virtual
> > power management:
> >
> > processor : 1
> > vendor_id : GenuineIntel
> > cpu family : 15
> > model : 4
> > model name : Intel(R) Pentium(R) 4 CPU 3.00GHz
> > stepping : 9
> > microcode : 0x3
> > cpu MHz : 2992.563
> > cache size : 1024 KB
> > physical id : 0
> > siblings : 2
> > core id : 0
> > cpu cores : 1
> > apicid : 1
> > initial apicid : 1
> > fpu : yes
> > fpu_exception : yes
> > cpuid level : 5
> > wp : yes
> > flags : 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 ht tm pbe syscall nx lm
> > constant_tsc pebs bts nopl pni dtes64 monitor ds_cpl cid cx16 xtpr 
> lahf_lm
> > bogomips : 5985.12
> > clflush size : 64
> > cache_alignment : 128
> > address sizes : 36 bits physical, 48 bits virtual
> > power management:
> >
> >
> > $ cat /proc/meminfo
> > MemTotal: 3071852 kB
> > MemFree: 1781128 kB
> > Buffers: 50152 kB
> > Cached: 530220 kB
> > SwapCached: 0 kB
> > Active: 734852 kB
> > Inactive: 461068 kB
> > Active(anon): 616424 kB
> > Inactive(anon): 87672 kB
> > Active(file): 118428 kB
> > Inactive(file): 373396 kB
> > Unevictable: 0 kB
> > Mlocked: 0 kB
> > SwapTotal: 4876284 kB
> > SwapFree: 4876284 kB
> > Dirty: 264 kB
> > Writeback: 0 kB
> > AnonPages: 615540 kB
> > Mapped: 113656 kB
> > Shmem: 88556 kB
> > Slab: 41624 kB
> > SReclaimable: 24600 kB
> > SUnreclaim: 17024 kB
> > KernelStack: 2816 kB
> > PageTables: 16592 kB
> > NFS_Unstable: 0 kB
> > Bounce: 0 kB
> > WritebackTmp: 0 kB
> > CommitLimit: 6412208 kB
> > Committed_AS: 2160812 kB
> > VmallocTotal: 34359738367 kB
> > VmallocUsed: 544412 kB
> > VmallocChunk: 34359186436 kB
> > HardwareCorrupted: 0 kB
> > AnonHugePages: 71680 kB
> > HugePages_Total: 0
> > HugePages_Free: 0
> > HugePages_Rsvd: 0
> > HugePages_Surp: 0
> > Hugepagesize: 2048 kB
> > DirectMap4k: 41504 kB
> > DirectMap2M: 3094528 kB
> >
> >
> > $ egrep "model name|address" /proc/cpuinfo
> > model name : Intel(R) Pentium(R) 4 CPU 3.00GHz
> > address sizes : 36 bits physical, 48 bits virtual
> > model name : Intel(R) Pentium(R) 4 CPU 3.00GHz
> > address sizes : 36 bits physical, 48 bits virtual
> >
> >
> > $ uname -a
> > Linux user-OptiPlex-210L 3.13.0-24-generic #47-Ubuntu SMP Fri May 2
> > 23:30:00 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
> >
> >
> > $ cat /etc/*release
> > DISTRIB_ID=LinuxMint
> > DISTRIB_RELEASE=17
> > DISTRIB_CODENAME=qiana
> > DISTRIB_DESCRIPTION="Linux Mint 17 Qiana"
> > NAME="Ubuntu"
> > VERSION="14.04, Trusty Tahr"
> > ID=ubuntu
> > ID_LIKE=debian
> > PRETTY_NAME="Ubuntu 14.04 LTS"
> > VERSION_ID="14.04"
> > HOME_URL="http://www.ubuntu.com/"
> > SUPPORT_URL="http://help.ubuntu.com/"
> > BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
> > cat: /etc/upstream-release: Is a directory
> >
> > Tom
> >
> > --
> > Sent by LinuxMint
> >
> > --
> > Sent by LinuxMint
> >
> > _______________________________________________
> > colug-432 mailing list
> > colug-432 at colug.net <mailto:colug-432 at colug.net>
> > http://lists.colug.net/mailman/listinfo/colug-432
>
> From what I have read the Pentium 4 is not a 64 bit processor.
>
> http://www.tomshardware.com/forum/285872-28-pentium-00ghz-chip-windows-compatible
>
> Although, the following Wikipedia article says some P4s do support 64 
> bit but it depends on the model.
>
>
>
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$ lscpu
Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                2
On-line CPU(s) list:   0,1
Thread(s) per core:    2
Core(s) per socket:    1
Socket(s):             1
NUMA node(s):          1
Vendor ID:             GenuineIntel
CPU family:            15
Model:                 4
Stepping:              9
CPU MHz:               2992.676
BogoMIPS:              5985.35
L1d cache:             16K
L2 cache:              1024K
NUMA node0 CPU(s):     0,1

Since I have hyperthreading enabled in BIOS, This P4 operates like a 
dual core and operates at 64bits. I suspect that Mint may be seeing the 
processor as 32 bit whether or not it is operating at 64 bit.

Tom

-- 
Sent by LinuxMint

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