On Tue, 2015-05-26 at 13:55 -0400, Ido Yariv wrote: > > The platform this was tested on was an embedded platform with a wifi > module (11n, 20MHZ). The other end was a computer running Windows, and > the benchmarking software was IxChariot. > The whole setup was running in a shielded box with minimal > interferences. > > As it seems, the throughput was limited by the congestion window. > Further analysis led to TLP - the fact that its timer was expiring > prematurely impacted cwnd, which in turn prevented the wireless driver > from having enough skbs to buffer and send. > > Increasing the size of the chunks being sent had a similar impact on > throughput, presumably because the congestion window had enough time to > increase. > > Changing the congestion window to Westwood from cubic/reno also had a > similar impact on throughput. >
Have you tested what results you had by completely disabling TLP ? Maybe a timer of 10 to 20ms is too short anyway in your testbed. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
