[Live-devel] CPU usage is high when there are 64 concurrentsessions.

[West Chen]

Dear Colin,

I'm using RTSP over HTTP, and by looking at the packets dumped by wireshark.
I saw something like this:

RTSP/1.0 200 OK
CSeq: 4
Date: Thu, Jun 27 2013 05:29:16 GMT
Transport: RTP/AVP/TCP;unicast;destination=<destination
address>;source=<source address>;interleaved=0-1
Session: <session id>

Hence I think the interleaved mode is used, and the source generated by my
camera contains only single video stream (without audio stream).
After checking the patch submitted by you in April, I believed that the
latest version of live555 contained that patch already.

I did try the latest version of live555 (live.2013.07.03.tar.gz), but the
result is still the same.

Thank your for your kindly response!



2013/7/12 Colin Caughie <ccaughie at openeye.net>

> 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)?****
>
> ** **
>
> If so, it could be the issue I reported here:
> http://lists.live555.com/pipermail/live-devel/2013-April/016796.html****
>
> ** **
>
> *From:* live-devel-bounces at ns.live555.com [mailto:
> live-devel-bounces at ns.live555.com] *On Behalf Of *West Chen
> *Sent:* Wednesday, July 10, 2013 7:33 PM
>
> *To:* LIVE555 Streaming Media - development & use
> *Subject:* Re: [Live-devel] CPU usage is high when there are 64
> concurrentsessions.****
>
> ** **
>
> Dear Ross,****
>
> ** **
>
> I do modify the macro FD_SETSIZE=1024, but the situation is still the same.
> ****
>
> Or is there any other limitation that might help?****
>
> ** **
>
> Thank you for your quick reply!****
>
> ** **
>
> 2013/7/11 Ross Finlayson <finlayson at live555.com>****
>
> 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.****
>
> ** **
>
> 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
> http://www.live555.com/liveMedia/faq.html#scalability****
>
> ** **
>
> Ross Finlayson
> Live Networks, Inc.
> http://www.live555.com/ ****
>
> ** **
>
>
> _______________________________________________
> live-devel mailing list
> live-devel at lists.live555.com
> http://lists.live555.com/mailman/listinfo/live-devel****
>
> ** **
>
> _______________________________________________
> live-devel mailing list
> live-devel at lists.live555.com
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>
>
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