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Re: irqbalance in fedora15

From: Benjamin <benjo11111_at_nospam>
Date: Sun Oct 30 2011 - 06:58:23 GMT
To: Community support for Fedora users <users@lists.fedoraproject.org>

  Yes, I want to set manually irq afinity for my lan interface on
multiple cpus.

How to do it?

Benjo
> Actually, in my experience you'd want each device (or actually each
> irq - especially in the case of multi-queue device) to fall squarely
> on one CPU core by manually setting the irq_affinity.
>
> I place very little faith on automated irq balancing.
>
>
> - Gilboa
>
> On Saturday, October 29, 2011, Benjamin <benjo11111@gmail.com
> <mailto:benjo11111@gmail.com>> wrote:
> > Hi,
> >
> > I want to configure irqbalance on both cpus.I have 2 lan interface
> one is wan and second is lan , currently i have 2 cpu and wan is
> falling on cpu0 and lan is also falling on cpu0.And now i want to set
> both interface should be fall on both cpus.
> >
> > How to do it?
> >
> > cat /proc/cpuinfo
> > processor : 0
> > vendor_id : GenuineIntel
> > cpu family : 6
> > model : 23
> > model name : Intel(R) Core(TM)2 CPU E7500 @ 2.93GHz
> > stepping : 10
> > cpu MHz : 2933.727
> > cache size : 3072 KB
> > physical id : 0
> > siblings : 2
> > core id : 0
> > cpu cores : 2
> > apicid : 0
> > initial apicid : 0
> > fdiv_bug : no
> > hlt_bug : no
> > f00f_bug : no
> > coma_bug : no
> > fpu : yes
> > fpu_exception : yes
> > cpuid level : 13
> > 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 nx
> lm constant_tsc arch_perfmon pebs bts aperfmperf pni monitor tm2 ssse3
> lahf_lm dts
> > bogomips : 5867.45
> > clflush size : 64
> > cache_alignment : 64
> > address sizes : 36 bits physical, 48 bits virtual
> > power management:
> >
> > processor : 1
> > vendor_id : GenuineIntel
> > cpu family : 6
> > model : 23
> > model name : Intel(R) Core(TM)2 CPU E7500 @ 2.93GHz
> > stepping : 10
> > cpu MHz : 2933.727
> > cache size : 3072 KB
> > physical id : 0
> > siblings : 2
> > core id : 1
> > cpu cores : 2
> > apicid : 1
> > initial apicid : 1
> > fdiv_bug : no
> > hlt_bug : no
> > f00f_bug : no
> > coma_bug : no
> > fpu : yes
> > fpu_exception : yes
> > cpuid level : 13
> > 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 nx
> lm constant_tsc arch_perfmon pebs bts aperfmperf pni monitor tm2 ssse3
> lahf_lm dts
> > bogomips : 5866.47
> > clflush size : 64
> > cache_alignment : 64
> > address sizes : 36 bits physical, 48 bits virtual
> > power management:
> >
> >
> > cat /proc/interrupts
> > CPU0 CPU1
> > 0: 258 743 IO-APIC-edge timer
> > 1: 653 651 IO-APIC-edge i8042
> > 8: 1798940 2243825 IO-APIC-edge rtc0
> > 9: 0 0 IO-APIC-fasteoi acpi
> > 12: 5479 68 IO-APIC-edge i8042
> > 14: 0 0 IO-APIC-edge ata_piix
> > 15: 0 0 IO-APIC-edge ata_piix
> > 16: 0 0 IO-APIC-fasteoi uhci_hcd:usb5
> > 18: 0 0 IO-APIC-fasteoi uhci_hcd:usb4
> > 19: 465089 466793 IO-APIC-fasteoi ata_piix, uhci_hcd:usb3
> > 21: 8153 2619593 IO-APIC-fasteoi p2p1
> > 23: 0 0 IO-APIC-fasteoi ehci_hcd:usb1,
> uhci_hcd:usb2
> > 40: 0 0 PCI-MSI-edge PCIe PME
> > 41: 0 0 PCI-MSI-edge PCIe PME, pciehp
> > 42: 0 0 PCI-MSI-edge PCIe PME, pciehp
> > 43: 138 330 PCI-MSI-edge i915
> > 44: 7261040 445 PCI-MSI-edge p10p1
> > 45: 143 147 PCI-MSI-edge hda_intel
> > NMI: 876 739 Non-maskable interrupts
> > LOC: 5102916 3854827 Local timer interrupts
> > SPU: 0 0 Spurious interrupts
> > PMI: 876 739 Performance monitoring interrupts
> > IWI: 0 0 IRQ work interrupts
> > RES: 5645 5530 Rescheduling interrupts
> > CAL: 1424 1909 Function call interrupts
> > TLB: 24029 20181 TLB shootdowns
> > TRM: 0 0 Thermal event interrupts
> > THR: 0 0 Threshold APIC interrupts
> > MCE: 0 0 Machine check exceptions
> > MCP: 883 883 Machine check polls
> > ERR: 1
> > MIS: 0
> >
> > Regards,
> > Benjamin
> >
> >
>
> --
> Sent from my Samsung Galaxy S2

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