Details
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Bug
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Resolution: Done
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Normal
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None
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4.12
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Critical
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No
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CNF Network Sprint 235, CNF Network Sprint 237
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2
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Rejected
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False
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Customer Escalated
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4/25: telco review pending (CG)
Description
Description of problem:
SDN: OVN-kubernetes
Network performance drops in 4.12 compared to 4.10 when the window size set to 64kb. If iperf test is done with in the same node, the values are similar in 4.10 and 4.12:
4.12 ========== Worker node 1 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-60.00 sec 183 GBytes 26.2 Gbits/sec 284 sender [ 5] 0.00-60.00 sec 183 GBytes 26.2 Gbits/sec receiver Worker node 2 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-60.00 sec 183 GBytes 26.2 Gbits/sec 284 sender [ 5] 0.00-60.00 sec 183 GBytes 26.2 Gbits/sec receiver Worker node 3 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-60.00 sec 247 GBytes 35.3 Gbits/sec 0 sender [ 5] 0.00-60.00 sec 247 GBytes 35.3 Gbits/sec receiver 4.10 ========== Worker node 1 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-60.00 sec 243 GBytes 34.8 Gbits/sec 1 sender [ 5] 0.00-60.00 sec 243 GBytes 34.8 Gbits/sec receiver Worker node 2 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-60.00 sec 178 GBytes 25.5 Gbits/sec 335 sender [ 5] 0.00-60.00 sec 178 GBytes 25.5 Gbits/sec receiver
But if the tests are done with different nodes, the performance drops significantly:
4.12 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-60.00 sec 3.40 GBytes 487 Mbits/sec 31 sender [ 5] 0.00-60.00 sec 3.40 GBytes 487 Mbits/sec receiver
Attachments
Issue Links
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- Closed
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