Hi, On Thu, Apr 09, 2015 at 11:06:52AM +0200, Guido Günther wrote: > > SSHing between the machines is ok. Nice. For tune-up tcp connection I set also set tcp window size; #reduce tcp receive buf, will improve tcp connections echo "127 512 1024" > /proc/sys/net/ipv4/tcp_rmem echo "127 512 1024" > /proc/sys/net/ipv4/tcp_wmem This will do this for all tcp connection. You can also try to set MSS with ip6tables. to have much fragments isn't good on a 6LoWPAN connection. Upper layers like CoAP, etc. will handle this. Also a general TCP connection isn't good, because the ACK handling stuff. Maybe want to try out "mosh with ipv6 support [1]" - currently only available on dev branch. High fragments and fq_codel qdisc will also occur trouble, because the skb's are too long inside the queue and fq_codel will drop them then. This occurs on my setup at payload of ~2000 bytes, but we should never reach such payload, also 1024 is too high. If you use with contiki I don't think that contiki implement ipv6 fragmentation, so you can set the highest payload to 1280. Does somebody knows if contiki supports ipv6 fragmentation? - Alex [1] https://github.com/keithw/mosh -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
