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Bug
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Resolution: Open
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Medium
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None
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16.06, 16.09
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None
TG is reporting dropped packets for all rates during binary search of NDR.
Dropped packet means either malformed packets (dropped by NIC) or packet dropped by vpp.
PERF test are using 3-node topology:
TG - DUT1 - DUT2 - TG
Traffic streams
stream1: (TG)port1 -> DUT1 -> DUT2 -> port2(TG)
stream2: (TG)port2 -> DUT2 -> DUT1 -> port1(TG)
each stream has ~252 flows (incrementing src_ip)
observations:
- This happens randomly in 1 out of 200 test runs, mostly with multithreaded vpp.
- packet loss reported by TG only in one direction
- numbers of ierrors reported by TG is aproximately 2*packet lost count
example of failure: https://jenkins.fd.io/view/csit/job/csit-vpp-perf-1606-all/
stats from test "4core VPP with rss 2 passes 1518B frames through IPv4 forwarding with COP at 2x 812,743pps in 3-node topology" attached
- blocks
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CSIT-118 VPP is randomly loosing small number of packets in perf. testing
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- Done
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