Hello Eric, > Hmm.. I was not aware of high RTT for some packets. > Can you spot this on the pcap you provided ? with the latest patch as in: (node-62) [~/work/linux-2.6] git diff | pbot http://pbot.rmdir.de/CQwqI6b7wJProw_xaukmEg with net.ipv4.tcp_min_tso_segs=2 we had this pcap: https://thomas.glanzmann.de/tmp/tcp_auto_corking_on_patched_tcp_more_notlast.pcap.bz2 And here is the RTT TCP graph: Wireshark > Statistics > TCP Stream Graph > Round Trip Time Graph https://thomas.glanzmann.de/tmp/screenshot-mini-2014-02-10-22_04_30.png with net.ipv4.tcp_min_tso_segs=8 we have this pcap: https://thomas.glanzmann.de/tmp/tcp_auto_corking_on_patched_tcp_more_notlast_min_tso_segs_8.pcap.bz2 And here is the RTT TCP graph: Wireshark > Statistics > TCP Stream Graph > Round Trip Time Graph This gives us 0.0015 seconds RTT (1.5 ms) Without TCP autocorking we had 0.0005 (0.5 ms). https://thomas.glanzmann.de/tmp/screenshot-mini-2014-02-08-09:53:17.png Cheers, Thomas -- To unsubscribe from this list: send the line "unsubscribe target-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
