Re: [Mvpmc-devel] Choppy wireless performance
Status: Alpha
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From: Martin P. <ma...@ha...> - 2004-11-25 08:00:26
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That sounds like it's a step in the right direction. Not wanting to sound too dim, where do I change the rsize/wsize settings? Do I add these to the mount line in the dongle.bin.config file or somewhere else? Thanks, >By a strange coincidence I carried out exactly this experiment at the >weekend. I had bought al the new wireless kit to replace the efficient but >ubnsightly bit of cat5, and had the usual nightmare of somthing that nearly >works, so you spend hours finding out why it doesnt quite work rather than >either giving up or just using it. :-)) > >Same results. I did find one thing that helps though. > >** If you increase the rsize/wzsize to 8192, then your performance will >improve.** More data is transmitted before acknowledgments are sent, a bit >like a larger window size in TCP. > >I am streaming avg 4 Mb/sec DVB-T (UK) and that seems fine over 802.11g, but >my 7-9 Mb/sec DVB-S captures don't, often stuttering and jerking. The same >files play ok over the wired link. I have found that the max rate I can get >to the MVP with my Dynamode Ap and asus ethernet adapter both 802.11g is >about 10 mb/s for NFS with the larger write/read sizes set, but only about >8.5 using the 4096 settings. > >Rather oddly using 8192 on the wired connection from the same router causes >a lock up of NFS :-) > > > >>The stock Hauppauge code is streaming the video over a tcp socket, with >>very little overhead. When using NFS, the file is transfered via udp >>with lots of overhead. So until mvpmc supports some transfer mechinism >>other than NFS, you're probably going to see issues like this. >> >>But I don't have a 802.11g wireless network to play with. Maybe others >>have gotten it to work. >> >>Jon >> >> >> >>>Hi all, >>> >>>I have borrowed a friends MVP to play with the replacement software and >>>I am experiencing very choppy playback from an NFS share. >>> >>>I tested the MVP using the supplied Windows software and playback was OK >>>over wireless (54g) but when I switched to mvpmc v0.1a the playback over >>> LAN was fine but over WiFi it was very choppy. The files are being >>>shared from and OpenBSD NFS server and I am using the standard tftp >>>config file listed in the FAQ (corrected for my server details, IP, >>>mount names, etc). >>> >>>I have seen mentiond the rsize/wsize NFS mount options but I do not >>>fully understand these. >>> >>>Can anyone suggest a possible solution? >>> >>>Thanks, >>> >>>Martin >>> >>> >>------------------------------------------------------- >>SF email is sponsored by - The IT Product Guide >>Read honest & candid reviews on hundreds of IT Products from real users. >>Discover which products truly live up to the hype. Start reading now. >>http://productguide.itmanagersjournal.com/ >>_______________________________________________ >>Mvpmc-devel mailing list >>Mvp...@li... >>https://lists.sourceforge.net/lists/listinfo/mvpmc-devel >> >> > > > > |