well .. antennas are important btw .. but check how many networks are there in the area, then if you could find what channels they use try to use a channel with least number of networks ;)
but if you still don't get it ..then something is crap. also try to setup a network between two machines ..but why do you need wireless anyway? it's not good for this application .. if you really wanna use it - try to disable all posible clients (make 300% sure that there is nothing going on the network appart form you pd thing). and as i've said - check for noise .. and may be try with bigger antennas ;) On Mon, May 24, 2010 at 10:51:09PM -0400, Ivica Ico Bukvic wrote: > So, we've tried to do a series of tests using tcpserver/client as well as > netserver/client and found the following: > > Using either off-the-shelf wifi hardware or an industrial strength wifi > router (in our case Cisco), we get unexpected lag spikes on local WLAN with > 16 clients at times even exceeding 2 seconds for some of the clients. > > Network connection in these tests was unencrypted. > > Packets tested were small to medium using both UDP and TCP (from a single > number, up to a sentence, plus a couple numbers). > > When using off-the-shelf router we even had clients drop connections to the > router in a high-traffic context. By using an industry strength router these > took much longer to occur (but have still nonetheless occurred). > > So, with the router being less likely of a culprit I am wondering what is > causing these spikes? > > Without looking closely at Pd's network code one suggested culprit by a CS > colleague might be how Pd reuses ports and a possibility of it starving the > router. Is this possible? > > The problem is apparent when sending sporadic TCP packets to all 16 machines > as well as when using both UDP and TCP connections. > > One last thought is whether there might be something on the router settings > that would make this an issue in both cases. > > Any thoughts on this would be most appreciated. > > Ivica Ico Bukvic, D.M.A. > Composition, Music Technology > Director, DISIS Interactive Sound & Intermedia Studio > Director, L2Ork Linux Laptop Orchestra > Assistant Co-Director, CCTAD > CHCI, CS, and Art (by courtesy) > Virginia Tech > Dept. of Music - 0240 > Blacksburg, VA 24061 > (540) 231-6139 > (540) 231-5034 (fax) > i...@vt.edu > http://www.music.vt.edu/faculty/bukvic/ > > > > _______________________________________________ > Pd-list@iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list _______________________________________________ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
