[CentOS] Gathering information about RAM in sockets

[Preston Connors]

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Timo,

dmidecode can show what RAM sockets are populated if your motherboard
supports retrieval of this information.

- From 'man dmidecode'

dmidecode  is a tool for dumping a computer's DMI (some say SMBIOS)
table contents in a human-readable format. This table contains a
description  of  the  system's  hardware  components,  as well as other
useful pieces of information such as serial numbers and BIOS revision.
Thanks to  this  table,  you  can  retrieve this information without
having to probe for the actual hardware.  While this is a good point in
terms  of report  speed  and  safeness, this also makes the presented
information possibly unreliable.

Timo Schoeler wrote:
> Hi list,
> 
> I have an IBM xseries 345, running CentOS 5.3, hosting a few Xen domUs.
> 
> However, I need more RAM -- but cannot remember if all (four) RAM
> sockets are populated (which would mean to buy higher capacity modules)
> or if there are two slots left to use.
> 
> However, I'd like (and think that it's possible, but don't remember how)
> to check remotely.
> 
> dmesg's first lines:
> 
> Linux version 2.6.18-164.el5xen (mockbuild at builder16.centos.org) (gcc
> version 4.1.2 20080704 (Red Hat 4.1.2-46)) #1 SMP Thu Sep 3 04:47:32 EDT
> 2009
> BIOS-provided physical RAM map:
>  Xen: 0000000000000000 - 0000000020800000 (usable)
> 0MB HIGHMEM available.
> 520MB LOWMEM available.
> Using x86 segment limits to approximate NX protection
> On node 0 totalpages: 133120
>   DMA zone: 133120 pages, LIFO batch:31
> DMI 2.3 present.
> ACPI: RSDP (v000 IBM                                   ) @ 0x000fdfc0
> ACPI: RSDT (v001 IBM    SERONYXP 0x00001000 IBM  0x45444f43) @ 0x7ffdff80
> ACPI: FADT (v001 IBM    SERONYXP 0x00001000 IBM  0x45444f43) @ 0x7ffdff00
> ACPI: MADT (v001 IBM    SERONYXP 0x00001000 IBM  0x45444f43) @ 0x7ffdfe40
> ACPI: ASF! (v016 IBM    SERONYXP 0x00000001 IBM  0x45444f43) @ 0x7ffdfd80
> ACPI: DSDT (v001 IBM    SERGEODE 0x00001000 MSFT 0x0100000b) @ 0x00000000
> ACPI: Local APIC address 0xfee00000
> ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
> ACPI: LAPIC (acpi_id[0x01] lapic_id[0x06] enabled)
> ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] enabled)
> ACPI: LAPIC (acpi_id[0x03] lapic_id[0x07] enabled)
> ACPI: LAPIC_NMI (acpi_id[0x00] dfl dfl lint[0x1])
> ACPI: LAPIC_NMI (acpi_id[0x06] dfl dfl lint[0x1])
> ACPI: LAPIC_NMI (acpi_id[0x01] dfl dfl lint[0x1])
> ACPI: LAPIC_NMI (acpi_id[0x07] dfl dfl lint[0x1])
> ACPI: IOAPIC (id[0x0e] address[0xfec00000] gsi_base[0])
> IOAPIC[0]: apic_id 14, version 17, address 0xfec00000, GSI 0-15
> ACPI: IOAPIC (id[0x0d] address[0xfec01000] gsi_base[16])
> IOAPIC[1]: apic_id 13, version 17, address 0xfec01000, GSI 16-31
> ACPI: IOAPIC (id[0x0c] address[0xfec02000] gsi_base[32])
> IOAPIC[2]: apic_id 12, version 17, address 0xfec02000, GSI 32-47
> ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
> ACPI: IRQ0 used by override.
> ACPI: IRQ2 used by override.
> ACPI: IRQ5 used by override.
> Enabling APIC mode:  Flat.  Using 3 I/O APICs
> Using ACPI (MADT) for SMP configuration information
> Built 1 zonelists.  Total pages: 133120
> Kernel command line: ro root=/dev/VG00/VG_root
> Enabling fast FPU save and restore... done.
> Enabling unmasked SIMD FPU exception support... done.
> Initializing CPU#0
> CPU 0 irqstacks, hard=c0750000 soft=c0730000
> PID hash table entries: 4096 (order: 12, 16384 bytes)
> Xen reported: 3059.962 MHz processor.
> Console: colour VGA+ 80x25
> Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
> Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
> Software IO TLB enabled:
>  Aperture:     2 megabytes
> 
> (...)
> 
> Any hints?
> 
> Thanks in advance,
> 
> Timo
> 
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- --
Thank you,
Preston Connors
Atlantic.Net
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