On pátek 16. února 2018 23:50:35 CET Eric Dumazet wrote: > /* snip */ > If you use > > tcptrace -R test_s2c.pcap > xplot.org d2c_rtt.xpl > > Then you'll see plenty of suspect 40ms rtt samples.
That's odd. Even the way how they look uniformly. > It looks like receiver misses wakeups for some reason, > and only the TCP delayed ACK timer is helping. > > So it does not look like a sender side issue to me. To make things even more complicated, I've disabled sg on the server, leaving it enabled on the client: client to server flow: 935 Mbits/sec server to client flow: 72.5 Mbits/sec So still, to me it looks like a sender issue. No?
