Hi,
We are using 82599 intel netcard that using 20 rxtx queues. We test it on
cpu E5-2670 which has 20 cpu cores. We bind every queues to each cpu by
"/proc/irq/<rxtx_irq_id>/smp_affinity".
First, we test the throughput and find that the rx irq is not distributed
to all cpu cores. Wd don't know why?
Seconde, we check the driver of ixgbe, and found three macros as follows:
#define IXGBE_DCA_RXCTRL_CPUID_MASK 0x0000001F /* Rx CPUID Mask */
#define IXGBE_DCA_RXCTRL_CPUID_MASK_82599 0xFF000000 /* Rx CPUID Mask */
#define IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599 24 /* Rx CPUID Shift */
Does it means that 82599 RSS could only return irq to most 8 irq queues?
Any body could help?
Thank you.
Best,
Liu.
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