Onload Latency - UG1586

You can measure Onload latency with the sfnt-pingpong application.

Run the sfnt-pingpong application on both systems:

[sys-1]# onload --profile=latency-best taskset -c 1 sfnt-pingpong

[sys-2]# onload --profile=latency-best taskset -c 1 sfnt-pingpong \
    --affinity "1;1" <protocol> <sys-1_ip>

where:

• <protocol> is udp or tcp, as appropriate
• <sys-1_ip> is the IP address of sys-1.

The output identifies mean, minimum, median and maximum (nanosecond) ½ RTT latency for increasing packet sizes, including the 99% percentile and standard deviation for these results.