>> I'd cleaned all rules of iptables and removed all modules of iptables from >> kernel by command modprobe -r >> But there's still some process of netfilter process running. I disabled >> netfilter on bridge interface by writing 0 to these files: >> /proc/sys/net/bridge/bridge-nf-call-arptables >> /proc/sys/net/bridge/bridge-nf-call-iptables >> /proc/sys/net/bridge/bridge-nf-call-ip6tables >> >> and the performance increases from 500 to 550 Mbps (iperf in tcp reports >> between 530 ~ 570Mbps). >> There is no more process like "br_nf_pre_routing" and "br_nf_forward_ip". >> Do you think I can do anything more to strip down netfilter?
>What do you get for UDP? That seems like pretty good TCP throughput. In VHT80 mode and rate forced to NSS3:MCS7, I can obtain 750 Mbps with less than 1% data lost (in both way, AP to STA and vice versa). Normally I can obtain 2/3 theory rate in practical (for expl NSS3:MCS3 has 390 Mbps in theory, and if I force to that rate, my TCP throughput is around 270 Mbps). So I should obtain 650 Mbps in practical for TCP with NSS3:MCS7 (975 Mbps in theory). 570 Mbps is so far to 650 Mbps :( >Also, do you get different results if you use Open v/s WPA2 encryption? >A test I just ran showed decreased performance on one of my systems >when I ran with open v/s wpa2 (400Mbps v/s 350Mbps, UDP goodput). >This was using hardware-crypt, so I expected it to be as fast as Open. >I'm running customized firmware and driver, so maybe that is cause of >slowdown...curious what results others are seeing though! In my case, I don't get much differences between Open vs WPA2 encryption, rate is almost the same (different around 10 ~ 20 Mbps and hard to see) >> I installed tc from package iproute2 and did : tc qdisc but it doesn't >> improve the performance >> One more question: Could the antennas create any effect on the MCS in use? >> We are using this antenna from PCTEL: >> http://www.antenna.com/apg_products.cgi?id_num=11395 >> And in the specification, I saw that it supports the standard 802.11n, so >> may be this is the reason >> that the best rate for me is MCS7? >Antenna and orientation matter, but the one you list advertises itself >as dual-band, so it looks like it should work well in the 5Ghz band >that AC uses. >You might try changing orientation and/or trying some different antenna. That antenna has 6 access so I connect my AP and STA to that antenna, it means that they are very close to each other. I've tried to connect my STA with others 3 smalls antennas dual band (http://www.senetic.fr/product/AIR-ANT2524DB-R?gclid=Cj0KEQjwjtGfBRCN4-LU9ODG1-wBEiQAy_Xp73JtC1W_cG1EyI_mft_OrR5qBD_qqDzslQMB8BMaXQQaAkAq8P8HAQ) and change direction but the rate I obtain is much lower, I can not reach high throughput as above. NGUYEN Vu Hai Acita-Sodielec Route de Mayres - B.P. 9 12100 St GEORGES DE LUZENCON FRANCE _______________________________________________ ath10k mailing list [email protected] http://lists.infradead.org/mailman/listinfo/ath10k _______________________________________________ ath10k mailing list [email protected] http://lists.infradead.org/mailman/listinfo/ath10k
