[Live-devel] Do the test applications ever sleep?

[Sid Price]

Ross,

 

When I comment out the line you suggested the CPU utilization by the process
does indeed go to 0%.

 

Before you make changes I would like to know more about the use of your
event triggers so that I can understand if I do need them or not. So, if you
could spare a few minutes describing them I would much appreciate it.

 

Many thanks,

Sid. 

 

From: live-devel-bounces at ns.live555.com
[mailto:live-devel-bounces at ns.live555.com] On Behalf Of Ross Finlayson
Sent: Friday, August 17, 2012 9:40 AM
To: LIVE555 Streaming Media - development & use
Subject: Re: [Live-devel] Do the test applications ever sleep?

 

I have run performance monitoring, again mentioned in an earlier post and I
know pretty well that the "OnDemandRTSPServer" is consuming about 7% of my
CPU time when Idle (just ran the tests and the earlier figure I quoted was
not accurate).

 

My hope was to reduce this to an absolute minimum by changing to a true
event driven server.

 

I don't understand this comment at all.  The server *is* a "true event
driven" server.  All LIVE555 applications are event driven.

 

It's difficult to see how a 'null' task running every 10 ms (which is also
an event, BTW) could be consuming 7% of your CPU.  However, if (and only if)
you don't use any event triggers in your application, then I suggest that
you - as an experiment - comment out the line

            schedulerTickTask(this); // ensures that we handle events
frequently

on line 46 of "BasicUsageEnvironment/BasicTaskScheduler.cpp", recompile, and
check how this affects your server's CPU time.  Please let me know.

 

If - even after commenting out that line - your server still consumes CPU
when idle, then you have a problem somewhere in your system.  However, if
your CPU time drops to zero when you comment out that line, then I'll add an
(optional) parameter to "BasicTaskScheduler::createNew()" to allow you to
disable the 'schedulerTickTask'.  (Note, though, that you could use this
only if you *don't* use event triggers at all.)

 

Ross Finlayson
Live Networks, Inc.
http://www.live555.com/ 

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.live555.com/pipermail/live-devel/attachments/20120817/976d66aa/attachment.html>