[ovs-discuss] OVS-DPDK polling cycles and processing cycles for pmd

Hui Xiang xianghuir at gmail.com
Sun Jun 11 04:06:08 UTC 2017


Hi guys,

  I got below results on my environment, but confusing with the cycles
percents, it looks like the polling plus processing cycles per pmd is 100%,
but as I recalled there are some improvment document that showed their
processing cycles are 100% percents which means 0 for polling cycles? how
should be the rate of polling and processing cycles take? should it be
better for less polling and much processing for performance's benefits?

pmd thread numa_id 1 core_id 27:
emc hits:141332792126
megaflow hits:263
avg. subtable lookups per hit:1.00
miss:59
lost:0
polling cycles:19832152639760 (12.60%)
processing cycles:137517517407771 (87.40%)
avg cycles per packet: 1113.33 (157349670047531/141332792711)
avg processing cycles per packet: 973.01 (137517517407771/141332792711)


Thanks a lot.
BR.
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