On 2011? 08? 26? 03:19, Akash wrote:
Try programming the CPU-irq affinity by writing to
/proc/irq/<irq-number>/smp_affinity
For example masks for irqs could be : irq 97 - 0x1 99 - 0x2 103 - 0x4 104 - 0x8
That way, you are hardcoding on which cpu the particular irqs should land.
HTH Akash
On Thu, Aug 25, 2011 at 4:08 AM, J.Hwan Kim <frog1120@gmail.com <mailto:frog1120@gmail.com>> wrote:
Hi, everyone
The interrupts of my ixgbevf driver occurs only Core 0 although the user space "irqbalance" serivce is working.
How can I distribute the interrupt of RX in ixgbevf to all cores? Is there any kernel compile option for it ?
cat /proc/interrupts | grep "isv" 97: 8 0 0 0 0 0 0 0 PCI-MSI-edge isv0-rx-0 99: 7 0 0 0 0 0 0 0 PCI-MSI-edge isv0:lsc 103: 2059 0 0 0 0 0 0 0 PCI-MSI-edge isv2-rx-0 104: 14 0 0 0 0 0 0 0 PCI-MSI-edge isv2-tx-0 105: 1 0 0 0 0 0 0 0 PCI-MSI-edge isv2:mbx
"isv" is netdevice name of my ixgbevf.
Thank you for reply. I want to distribute, for example, IRQ 103 to all cores as follows : 103 : 111 2344 1334 3233 2233 1111 2233 362262 isv2-rx-0 That cannot be achieved by setting /proc/irq/irq-num/smp_affinity.