7–iSCSI Extensions for RDMAOptimizing Linux Performance75 BC0154503-00 CIRQ Affinity SettingsThis example sets CPU core 0, 1, 2 and 3 to IRQ XX, YY, ZZ and XYZrespectively. This will need to be done for each IRQ assigned to a port (default iseight queues per port)systemctl disable irqbalancesystemctl stop irqbalancecat /proc/interrupts | grep qedr Shows IRQ assigned to each port queueecho 1 > /proc/irq/XX/smp_affinity_listecho 2 > /proc/irq/YY/smp_affinity_listecho 4 > /proc/irq/ZZ/smp_affinity_listecho 8 > /proc/irq/XYZ/smp_affinity_listBlock Device StagingSet the block device staging settings for each iSCSI device/target:echo noop > /sys/block/sdd/queue/schedulerecho 2 > /sys/block/sdd/queue/nomergesecho 0 > /sys/block/sdd/queue/add_randomecho 1 > /sys/block/sdd/queue/rq_affinity
