Messages in this thread |  | | Date | Tue, 06 Feb 2007 17:52:09 -0300 | From | Pablo Sebastian Greco <> | Subject | Re: cpu load balancing problem on smp |
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Arjan van de Ven wrote: > Pablo Sebastian Greco wrote: > >> 2296: 427 426 436 134563009 PCI-MSI-edge >> eth1 >> 2297: 252 252 135926471 257 PCI-MSI-edge >> eth0 > > this suggests that cores would be busy rather than only one.... > - Yes, but you are looking at mm kernel statistics, but if you look at the standard kernel, you'll see that eth interrupts are on the same core according to attached /proc/cpuinfo. OTOH, take a look at timer interrupt distribution processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 6 model name : Intel(R) Xeon(TM) CPU 2.66GHz stepping : 4 cpu MHz : 2656.000 cache size : 2048 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 2 fpu : yes fpu_exception : yes cpuid level : 6 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 syscall nx lm constant_tsc pni monitor ds_cpl vmx est cid cx16 xtpr lahf_lm bogomips : 5324.82 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 : 6 model name : Intel(R) Xeon(TM) CPU 2.66GHz stepping : 4 cpu MHz : 2656.000 cache size : 2048 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 2 fpu : yes fpu_exception : yes cpuid level : 6 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 syscall nx lm constant_tsc pni monitor ds_cpl vmx est cid cx16 xtpr lahf_lm bogomips : 5320.06 clflush size : 64 cache_alignment : 128 address sizes : 36 bits physical, 48 bits virtual power management:
processor : 2 vendor_id : GenuineIntel cpu family : 15 model : 6 model name : Intel(R) Xeon(TM) CPU 2.66GHz stepping : 4 cpu MHz : 2656.000 cache size : 2048 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 2 fpu : yes fpu_exception : yes cpuid level : 6 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 syscall nx lm constant_tsc pni monitor ds_cpl vmx est cid cx16 xtpr lahf_lm bogomips : 5320.20 clflush size : 64 cache_alignment : 128 address sizes : 36 bits physical, 48 bits virtual power management:
processor : 3 vendor_id : GenuineIntel cpu family : 15 model : 6 model name : Intel(R) Xeon(TM) CPU 2.66GHz stepping : 4 cpu MHz : 2656.000 cache size : 2048 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 2 fpu : yes fpu_exception : yes cpuid level : 6 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 syscall nx lm constant_tsc pni monitor ds_cpl vmx est cid cx16 xtpr lahf_lm bogomips : 5320.16 clflush size : 64 cache_alignment : 128 address sizes : 36 bits physical, 48 bits virtual power management:
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