Answer by scai for ethernet smp_affinity vs /proc/interrupts vs...
Check if you have a directory /sys/class/net/eth1/device/msi_irqs/. If so, ignore the content of /sys/class/net/eth1/device/irq. This network device has multiple rx/tx queues and therefore multiple...
View ArticleAnswer by ewwhite for ethernet smp_affinity vs /proc/interrupts vs...
Are you using a realtime kernel? Are you leveraging cgroups or cpusets to isolate your application? If you're on a stock distribution kernel, you're leaving a good amount of latency gains on the table....
View ArticleAnswer by Brian Cain for ethernet smp_affinity vs /proc/interrupts vs...
Why are there multiple entries for "eth1" in the form of "eth1-X"?Because there are multiple tx/rx queues. These queues are often a hash of (local addr, port, remote addr, port) and some other stuff....
View Articleethernet smp_affinity vs /proc/interrupts vs /sys/class/net/ethX/device
My goal is to configure our CentOS ("free" RHEL) 5.x servers for custom low-latency network programs. I would like to experiment with binding ethernet NIC interrupt handling to the same CPU on which...
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