Thanks for the input I'll try to look into those issues. Regards, Nuno 2011/6/7 Ross Finlayson <[email protected]>
> a couple of days ago i conducted some scalability tests with the live555 >> media server. The computer in test was a quad core that handle the job >> pretty well and of course a Gigabit port was used. For the last test I used >> several openRTSP clients. The video source I used was a transport steam >> file. The normal client downloads an average of 10Mbit/s (1,3Mbytes/s). For >> the test I created 68 clients all connecting to the same live555 server. The >> connection sequence was the following, 25 clients, 24 clients, 12 clients >> and 8. For the first 49 clients the connection was stable and normal, having >> a total throughput of more than 500Mbit/s. However when connecting the next >> 12 and 8, the bandwidth was reduced more than 20% for every client i think. >> Because testing for one the average speed was less than 8Mbit/s with a >> total Throughput from the server of around 500Mbit/s. >> >> Later when the first 25 clients disconnected and the rest remained, the >> connection went up reaching almost 750Mbit for 5 minutes and just for 44 >> clients, meaning they were compensating I guess for the stream delay. In the >> end all the remaining clients had a video file almost identical to the >> original one (missing a few seconds maybe). Why did this happen? >> > > I don't know. You'll have to explicitly measure exactly where in your > system the bottleneck(s) are occurring, and exactly what is getting > overloaded. > > Note that there's a lot more in 'your system' than just our software. In > particular, you have operating systems, CPUs, networks, routers, etc. Any > of which could be limiting scalability. > > Note in particular that scalability problems with this (and other) software > is often caused by operating-system-imposed limits on the number of open > sockets. Such a limit can usually be increased by reconfiguring your OS, so > that's one of many things that you might try. > > > > I'm guessing ofcourse this is due to the RTCP protocol. >> > > No, that's highly unlikely. The overhead of RTCP is negligible. > -- > > Ross Finlayson > Live Networks, Inc. > http://www.live555.com/ > _______________________________________________ > live-devel mailing list > [email protected] > http://lists.live555.com/mailman/listinfo/live-devel >
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