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Kevin J. Cummings wrote: | Matías López Bergero wrote: |> I have a SMP capable server, but with only one cpu installed. |> Should I enable SMP support on the kernel? I'm trying to reach the best |> performance. |> The cpu is Intel Xeon, this option is not in the cpu list in the kernel |> config. Should I chose P4 or P3? it is the same? | | IIRC, Xeon processors have dual internal cores (or at least dual | instruction decode paths), and act like dual processors, and benefit | from the SMP kernels. Also, IIRC, there were both P3 and P4 Xeons made. | So, you have to know which version you have. | | What does "cat /proc/cpuinfo" tell you? |
I'm seeing two processors, I had notes this before, but I was in doubt if that output was produced by the SMP kernel, or the Xeon cpu, now according to what you are telling me, it's a feature of the Xeon cpu right?
If I remember Correctly, yes, its a feature of the XEON CPU. (I have athlons here at home!)
Here is my cpuinfo:
sh-2.05b# cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Xeon(TM) CPU 2.80GHz
This looks like a P4 Xeon: 2.80GHz speed
stepping : 9 cpu MHz : 2800.195 cache size : 512 KB physical id : 0 siblings : 2
Yeup, looks like 2 instruction pipelines.
runqueue : 0 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 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 bogomips : 5583.66
And the second "processor":
processor : 1 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Xeon(TM) CPU 2.80GHz stepping : 9 cpu MHz : 2800.195 cache size : 512 KB physical id : 0 siblings : 2 runqueue : 0 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 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 bogomips : 5596.77
sh-2.05b#
Thanks for ur help Kevin!
NP
-- Kevin J. Cummings kjchome@xxxxxxx cummings@xxxxxxxxxxxxxxxxxx cummings@xxxxxxxxxxxxxxxxxxxxxxx - : send the line "unsubscribe linux-admin" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
