"Robin Jarry" <rja...@redhat.com> writes: > Hi all, > > I have been working on some benchmarks of user space connection > tracking. I wanted to give some feedback on the results so that I got on > two patch series that were submitted by Paolo and Gaëtan a while ago. > > In this intent, I have written a small script that makes use of T-Rex > ASTF API to generate arbitrary TCP and UDP connections: > > https://github.com/rh-nfv-int/trex-core/blob/master/scripts/conntrack_ndr.py > > TL;DR: Both series show significant improvement in conntrack creation > and destruction for a single core (around +240%). However, there seem to > be scalability issues with multiple cores in Gaëtan's series. >
Just a note that may be useful. After some tests, I noticed that establishing e.g. two TCP connections, and leaving the first one idle after 3whs, once the second connection expires (after moving to TIME_WAIT as a result of termination), the second doesn't get evicted until any event gets scheduled for the first. ovs-appctl dpctl/dump-conntrack -s tcp,orig=(src=10.1.1.1,dst=10.1.1.2,sport=9090,dport=8080),reply=(src=10.1.1.2,dst=10.1.1.1,sport=8080,dport=9090),zone=1,timeout=84576,protoinfo=(state=ESTABLISHED) tcp,orig=(src=10.1.1.1,dst=10.1.1.2,sport=9091,dport=8080),reply=(src=10.1.1.2,dst=10.1.1.1,sport=8080,dport=9091),zone=1,timeout=0,protoinfo=(state=TIME_WAIT) This may be somewhat related to your results as during the test, the number of connections may reach the limit so apparently reducing the performances. As a side note, I noticed that some tests succeed (e.g. 133: conntrack - IPv6 HTTP with DNAT), but vswitchd ends up calling ovs_abort() after dpctl_flush_conntrack() (the same happen for later tests after conntrack_destroy()). That should have no impact on this specific test, though. > Detailed benchmark procedure and results: > https://gist.github.com/rjarry/efe91f14a9bda4eb287592f696dbd123 > > Gaëtan Rivet's series: > https://patchwork.ozlabs.org/project/openvswitch/list/?series=292039 > > Paolo Valerio's series (first 3 patches are missing from the web ui): > https://patchwork.ozlabs.org/project/openvswitch/list/?series=291239 > > Cheers, > > -- > Robin _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev
