[Red5devs] ServerStream lagging problem

[Muyen]

Hi,

I discovered what is causing the problem. The ServerStream is using the QuartzSchedulingService to publish the stream.
The performance of the Quartz service is too poorly and cause the stream messages being skipped and not published.

I replaced the QuartzSchedulingService with java's ScheduledThreadPoolExecutor and the stream seems to work without problems.

I think either we can try to change Quartz settings to make it run more efficient or use  ScheduledThreadPoolExecutor  instead to fix the problem.


Regards,

Muyen









Paul here is the ticket , created on the 6th of Feb 2007 ! 


http://jira.red5.org/browse/SN-21




On 23/10/2008, at 1:16 AM, Mondain wrote:


  Well, it looks like ill be digging into this because its related to the mp4 branch; so hopefully we will have a solution before rc2. 


  Paul


  On Wed, Oct 22, 2008 at 1:54 AM, Daniel Rossi <electroteque at gmail.com> wrote:

    Yes it is so, because its a live stream, i subscribe, close then resubscribe at a particular interval and i get 


    [WARN] [DefaultQuartzScheduler_Worker-3] org.red5.server.stream.consumer.ConnectionConsumer - Skipping message with negative timestamp.


    No metadata is sent for the file also, and eclipse complains that the serverstream dosnt exist


    [INFO] [pool-4-thread-16] org.red5.server.stream.ProviderService - getVODProviderFile scope path:  name: live0
    [WARN] [pool-4-thread-16] org.red5.server.stream.ProviderService - File was null or did not exist: live0


    Using ns.play(streamName, -1);


    It seems to skips all over the place, has been a problem like this for ages has never worked, have put in tickets about it :\


    On 22/10/2008, at 4:46 PM, Mondain wrote:


      Yeah its odd not to see him on the list.. must be on Holiday. 


      Paul


      On Tue, Oct 21, 2008 at 7:27 PM, Daniel Rossi <electroteque at gmail.com> wrote:

        AHH it's still a problem, i'm about to implement server stream for a logging test application will take a look, i think the timestamps stuff is still screwy. Check the thread for the good work lenny did.  


        BTW WHERE IS LENNY :D 




        On 22/10/2008, at 1:22 PM, Muyen wrote:


          Hi,

          I'm trying to use ServerStream to publish audio mp3 or flv to flash. I can hear the music playing but it seams to be lagging.


          From the console, I found the following message.

          org.red5.server.stream.consumer.ConnectionConsumer - Skipping message with negative timestamp.

          I think somehow, the ServerStream calc the timestamp wrong causing it to have negative value and skip some of the message to be published.
          I'm not sure about this.

          I searched the web and found some posts that describe the same problem. 

          I'm wondering is it a bug or there is a work around for this? or is there some problem with my code?

          Thanks in advance.

          my code

          IServerStream serverStream = StreamUtils.createServerStream(scope, publishName);
            
            String fileName = "bb.mp3";
            
            SimplePlayItem playItem = new SimplePlayItem();
            playItem.setName(fileName);

            
            playItem.setStart(0);

            IProviderService providerService = (IProviderService) scope.getContext().getBean(IProviderService.BEAN_NAME);
            if (providerService != null) {
                 File file = providerService.getVODProviderFile(scope, fileName);
                 if (file != null) {
                      playItem.setSize(file.length());
                 } else {
                      log.debug("File was null, this is ok for live streams");
                 }
                } else {
                 log.debug("ProviderService was null");
                }

            serverStream.addItem(playItem);
              
            serverStream.start();


          Best Regards,

          Muyen




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