Hi, I'm doing some network stress tests on Contrail. One of them is to measure at which rate a vrouter can create new ephemeral TCP sessions.
To do that test, I'm using a tsung generator distributed on different VM (five) and a nginx server that simply return an HTTP 204 code. I setted a floating IP on the nginx server and tsung clients use it as HTTP endpoint. I also had to tune some system and nginx parameters. On the Contrail side, I just tested it on 1.10 branch for the moment. The kernel module is loaded with 'vr_flow_entries' setted to 2097152 and the vrouter agent 'FLOWS.max_vm_flows' to 20%. The result is the vrouter starts to drop flow with reason "Flow Unusable" when the tsung client try to send 1000 HTTP requests per seconds. Do you think my results are correct? Do you see any mistake in my test bed? Someone already tried that type of test? If yes, what's your results? Regards, Édouard.
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