Messages in this thread | | | Date | Wed, 16 Jul 2014 16:47:18 -0500 | From | Greg Donald <> | Subject | Re: find_busiest_group divide error |
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On Wed, Jul 16, 2014 at 11:31:02PM +0200, Dietmar Eggemann wrote: > My patch caffcdd8d27ba78730d5540396ce72ad022aff2c got rid of > cpumask_clear(sched_group_cpus(sg)); and sg->sgp->power = 0; so > reverting it (and replacing sg->sgp->power = 0 with > sg->sgc->capacity = 0) should cure it too. (although the missing > cpumask_clear() is the culprit on your machine here). > > Could I ask you to share the content of your /proc/cpuinfo file? I > suspect it might be the same topology as the one Bruno just sent out > (the one of a dual single core CPU with hyper-threading ?) > > https://lkml.org/lkml/2014/7/16/603
Sounds like what I have:
processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Xeon(TM) CPU 2.00GHz stepping : 7 microcode : 0x25 cpu MHz : 1993.502 cache size : 512 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 1 apicid : 0 initial apicid : 0 fdiv_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 pbe pebs bts cid bogomips : 3987.00 clflush size : 64 cache_alignment : 128 address sizes : 36 bits physical, 32 bits virtual power management:
processor : 1 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Xeon(TM) CPU 2.00GHz stepping : 7 microcode : 0x25 cpu MHz : 1993.502 cache size : 512 KB physical id : 3 siblings : 2 core id : 0 cpu cores : 1 apicid : 6 initial apicid : 6 fdiv_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 pbe pebs bts cid bogomips : 3987.39 clflush size : 64 cache_alignment : 128 address sizes : 36 bits physical, 32 bits virtual power management:
processor : 2 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Xeon(TM) CPU 2.00GHz stepping : 7 microcode : 0x25 cpu MHz : 1993.502 cache size : 512 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 1 apicid : 1 initial apicid : 1 fdiv_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 pbe pebs bts cid bogomips : 3987.34 clflush size : 64 cache_alignment : 128 address sizes : 36 bits physical, 32 bits virtual power management:
processor : 3 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Xeon(TM) CPU 2.00GHz stepping : 7 microcode : 0x25 cpu MHz : 1993.502 cache size : 512 KB physical id : 3 siblings : 2 core id : 0 cpu cores : 1 apicid : 7 initial apicid : 7 fdiv_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 pbe pebs bts cid bogomips : 3987.42 clflush size : 64 cache_alignment : 128 address sizes : 36 bits physical, 32 bits virtual power management:
-- Greg Donald [unhandled content-type:application/pgp-signature] | |