<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#943634'>Are you a) using interleaved mode and b) not processing one or more of the streams in the session (e.g. throwing away an audio stream)?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#943634'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#943634'>If so, it could be the issue I reported here: <a href="http://lists.live555.com/pipermail/live-devel/2013-April/016796.html">http://lists.live555.com/pipermail/live-devel/2013-April/016796.html</a><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#943634'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> live-devel-bounces@ns.live555.com [mailto:live-devel-bounces@ns.live555.com] <b>On Behalf Of </b>West Chen<br><b>Sent:</b> Wednesday, July 10, 2013 7:33 PM<br><b>To:</b> LIVE555 Streaming Media - development & use<br><b>Subject:</b> Re: [Live-devel] CPU usage is high when there are 64 concurrentsessions.<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Dear Ross,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I do modify the macro FD_SETSIZE=1024, but the situation is still the same.<o:p></o:p></p></div><div><p class=MsoNormal>Or is there any other limitation that might help?<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Thank you for your quick reply!<o:p></o:p></p></div></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div><p class=MsoNormal>2013/7/11 Ross Finlayson <<a href="mailto:finlayson@live555.com" target="_blank">finlayson@live555.com</a>><o:p></o:p></p><div><div><p class=MsoNormal>I presume - from your question - that you see high CPU usage *only* when you have a large number of concurrent client connections, but not if you have a small number of concurrent client connections.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>If this is the case, then the problem is almost certainly caused by you running into an OS-imposed limit on the number of open files (sockets) that can be used by a single process. See <a href="http://www.live555.com/liveMedia/faq.html#scalability" target="_blank">http://www.live555.com/liveMedia/faq.html#scalability</a><o:p></o:p></p></div><p class=MsoNormal><span class=hoenzb><span style='color:#888888'><o:p> </o:p></span></span></p><div><p class=MsoNormal><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif";color:#888888'>Ross Finlayson<br>Live Networks, Inc.<br><a href="http://www.live555.com/" target="_blank">http://www.live555.com/</a></span><span style='color:#888888'> </span><o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'><br>_______________________________________________<br>live-devel mailing list<br><a href="mailto:live-devel@lists.live555.com">live-devel@lists.live555.com</a><br><a href="http://lists.live555.com/mailman/listinfo/live-devel" target="_blank">http://lists.live555.com/mailman/listinfo/live-devel</a><o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div></div></body></html>