How often to poll WuUpdate

[seeme-o]

I am adapting WuNetwork.cpp to work using coroutines and I am currently calling WuUpdate via a timer. I am using 1ms intervals but haven't done enough testing to know if this is overkill, or even worse if it may cause issues when handling connection heartbeats. Do you have any input regarding a healthy/optimal interval for updating clients? Thanks

[seemk]

I think it depends on the maximum latency you're willing to accept when polling for new data. Currently WebUDP is sending SCTP heartbeats with 4 second intervals. If you're using it in a game, once per frame should be good I guess.

[seeme-o]

Did a few tests, and here's what I came up with:

3 test runs with 1ms second intervals and 3 test runs with 10ms. They show an increase of min time using the greater interval running roundtrip_histogram.html

test 1, 10ms interval
roundtrip_histogram.html:84 max=34.34 ms
roundtrip_histogram.html:85 min=0.59 ms
roundtrip_histogram.html:86 completed=100%

test 2, 10ms interval
roundtrip_histogram.html:84 max=34.17 ms
roundtrip_histogram.html:85 min=0.54 ms
roundtrip_histogram.html:86 completed=100%

test 3, 10ms interval
roundtrip_histogram.html:84 max=39.05 ms
roundtrip_histogram.html:85 min=0.60 ms
roundtrip_histogram.html:86 completed=100%

test 1, 1ms interval
roundtrip_histogram.html:84 max=37.21 ms
roundtrip_histogram.html:85 min=0.33 ms
roundtrip_histogram.html:86 completed=100%

test 2, 1ms interval
roundtrip_histogram.html:84 max=32.77 ms
roundtrip_histogram.html:85 min=0.38 ms
roundtrip_histogram.html:86 completed=100%

test 3, 1ms interval
roundtrip_histogram.html:84 max=44.98 ms
roundtrip_histogram.html:85 min=0.34 ms
roundtrip_histogram.html:86 completed=100%

One interesting note is that is showed a noticeable performance improvement over the regular EchoServer

EchoServer
roundtrip_histogram.html:84 max=185.61 ms
roundtrip_histogram.html:85 min=0.34 ms
roundtrip_histogram.html:86 completed=89.64999999999999%

roundtrip_histogram.html:84 max=141.45 ms
roundtrip_histogram.html:85 min=0.36 ms
roundtrip_histogram.html:86 completed=82.45%

roundtrip_histogram.html:84 max=238.99 ms
roundtrip_histogram.html:85 min=1.36 ms
roundtrip_histogram.html:86 completed=47.55%