dts: fix variance in single core forward performance test

http://bugs.dpdk.org/show_bug.cgi?id=1969

Bug ID: 1969
Summary: dts: fix variance in single core forward performance
test
Product: DPDK
Version: 26.07
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: DTS
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Target Milestone: ---

Currently, multiple performance runs yield varying results with a standard deviation of about 10Mpps. This is on the same testbed that has consistent performance results when running old DTS with a standard deviation of about 1Mpps. There was a commit sent to old DTS specifically addressing this variance issue by limiting the transmission duration to 5 seconds and averaging results over a couple of runs instead of one. Testing this 5 second gap instead of 30 has shown consistent results when testing new DTS locally, however, averaging over a few runs may be beneficial to implement as well with new DTS.

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