On Fri, 2015-01-30 at 14:39 +0100, Michal Kazior wrote: > I've briefly tried playing with this knob to no avail unfortunately. I > tried 256K, 1M - it didn't improve TCP performance. When I tried to > make it smaller (e.g. 16K) the traffic dropped even more so it does > have an effect. It seems there's some other limiting factor in this > case. Interesting. Could you take some tcpdump/pcap with various tcp_limit_output_bytes values ? echo 131072 >/proc/sys/net/ipv4/tcp_limit_output_bytes tcpdump -p -i wlanX -s 128 -c 20000 -w 128k.pcap echo 262144 >/proc/sys/net/ipv4/tcp_limit_output_bytes tcpdump -p -i wlanX -s 128 -c 20000 -w 256k.pcap ... Thanks ! -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
