On 08/04/2018 02:36 AM, Marcelo Ricardo Leitner wrote:
On Fri, Aug 03, 2018 at 07:21:00PM +0300, Konstantin Khorenko wrote: ...Performance results: ==================== * Kernel: v4.18-rc6 - stock and with 2 patches from Oleg (earlier in this thread) * Node: CPU (8 cores): Intel(R) Xeon(R) CPU E31230 @ 3.20GHz RAM: 32 Gb * netperf: taken from https://github.com/HewlettPackard/netperf.git, compiled from sources with sctp support * netperf server and client are run on the same node * ip link set lo mtu 1500 The script used to run tests: # cat run_tests.sh #!/bin/bash for test in SCTP_STREAM SCTP_STREAM_MANY SCTP_RR SCTP_RR_MANY; do echo "TEST: $test"; for i in `seq 1 3`; do echo "Iteration: $i"; set -x netperf -t $test -H localhost -p 22222 -S 200000,200000 -s 200000,200000 \ -l 60 -- -m 1452; set +x done done ================================================ Results (a bit reformatted to be more readable):... Nice, good numbers. I'm missing some test that actually uses more than 1 stream. All tests in netperf uses only 1 stream. They can use 1 or Many associations on a socket, but not multiple streams. That means the numbers here show that we shouldn't see any regression on the more traditional uses, per Michael's reply on the other email, but it is not testing how it will behave if we go crazy and use the 64k streams (worst case). You'll need some other tool to test it. One idea is sctp_test, from lksctp-tools. Something like: Server side: ./sctp_test -H 172.0.0.1 -P 22222 -l -d 0 Client side: time ./sctp_test -H 172.0.0.1 -P 22221 \ -h 172.0.0.1 -p 22222 -s \ -c 1 -M 65535 -T -t 1 -x 100000 -d 0 And then measure the difference on how long each test took. Can you get these too? Interesting that in my laptop just to start this test for the first time can took some *seconds*. Seems kernel had a hard time defragmenting the memory here. :)
No problem, will do those measurements as well. Even more, to get the test results more repeatable, i think i make the memory highly fragmented before the test. :) Thank you! -- Best regards, Konstantin Khorenko, Virtuozzo Linux Kernel Team -- To unsubscribe from this list: send the line "unsubscribe linux-sctp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
