Test UDP latency via Sockperf with VMA and Mellanox CX354a performance too low

[ch155260]

I test UDP latency via Sockperf with Mellanox CX354a percentile 99.999 is 1.577 and the test result is unstable.

I found UDP latency result percentile 99.999 is 1.411 via sockperf with Mellanox CX354A release by Supermicro

Does someone have any suggestion to optimize of UDP latency??

My test conuration as below.
Run command:
Server:
LD_PRELOAD=libvma.so VMA_SPEC=latency VMA_THREAD_MODE=0 VMA_INTERNAL_THREAD_AFFINITY=2 VMA_RX_POLL=-1 numactl --cpunodebind=0 --membind=0 taskset -c 1 sockperf server -i 192.168.1.1 --dontwarmup --mc-loopback-enable

Client:
for i in seq 1 100; do LD_PRELOAD=libvma.so VMA_SPEC=latency VMA_THREAD_MODE=0 VMA_INTERNAL_THREAD_AFFINITY=2 VMA_RX_POLL=-1 numactl --cpunodebind=0 --membind=0 taskset -c 1 sockperf ping-pong -i 192.168.1.1 --mps=600000 -m 64 -t 2 --buffer-size=212992 --lls=1 --no-rdtsc --dontwarmup; sleep 5 ; done

[NirNitzani]

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[ch155260]

Hi @NirNitzani ,
I have sent the maill to support@mellanox.com and opened the ticket which ID is 00787032.
Because we don't purchase VMA support, the Mellanox support team told that I only can po the issue to VMA git or Mellanox community portal.