mtrr: your CPUs had inconsistent fixed MTRR settings

[Alessio_9]

Hi
I have Proliant DL 360 Server RHES 2.1 with 3GB RAM, 4CPUs
I'm seeing this dmesg messages:

Processors: 4
....
....
Using local APIC timer interrupts.
calibrating APIC timer ...
..... CPU clock speed is 3065.8480 MHz.
..... host bus clock speed is 133.2974 MHz.
cpu: 0, clocks: 1332974, slice: 266594
CPU0<1332960>
cpu: 1, clocks: 1332974, slice: 266594
cpu: 2, clocks: 1332974, slice: 266594
cpu: 3, clocks: 1332974, slice: 266594
CPU1<1332960>
CPU2<1332960>
CPU3<1332960>
checking TSC synchronization across CPUs: passed.
mtrr: your CPUs had inconsistent fixed MTRR settings
mtrr: probably your BIOS does not setup all CPUs
PCI: PCI BIOS revision 2.10 entry at 0xf0094, last bus=6
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: Discovered peer bus 01
PCI: Discovered peer bus 04
PCI->APIC IRQ transform: (B0,I4,P0) -> 31
PCI->APIC IRQ transform: (B0,I5,P0) -> 23
PCI->APIC IRQ transform: (B0,I5,P1) -> 22
PCI->APIC IRQ transform: (B0,I15,P0) -> 10
PCI->APIC IRQ transform: (B1,I2,P0) -> 30
PCI->APIC IRQ transform: (B4,I2,P0) -> 29
.....
....
ds: no socket drivers loaded!
mtrr: no more MTRRs available
mtrr: no more MTRRs available
mtrr: no more MTRRs available

I don't know why? What does it means?
In attach the /proc/mtrr file.

Thanks
Alessio

[Prashant (I am Back) · Accepted solution]

Hi Alessio Scazzosi,

I am not good in linux,but what i can suggest you is install psp for same or install survey utility to check for hardware error logs on same server.
Other way out are you getting any error logs at post.

If you want to validate the hardware of your server user smart start cd use maintance option and run test on your server.

Post back for further clarification.

Regards,
Prashant S.

[Alessio_9]

According to your experience, Would you recommend to use HyperThreading technology on Server with 4 CPUs?

Thanks

Regards
Alessio

[Prashant (I am Back)]

Hi,

Q) According to your experience, Would you recommend to use HyperThreading technology on Server with 4 CPUs?

A) Yes, but in some cases when we install more cpu's it wont show in OS. as i told i am not sure about linux. But in windows box we user following doccument to configure.

http://support.microsoft.com/default.aspx?scid=kb;en-us;237556

Regards,
Prashant S.

[Mike Ludwig]

The DL360 dosn't support 4 processors. You have a 2 processor system with hyperthreading so it only looks like 4 processor. Since I don't know jack about Linux I can't say for sure but I'd bet it dosn't like what it sees in the extra 2 processors setup by hyperthreading. Try disableing hyperthreading and see if its happy.