Agreed that they delay is inherent to RDP and the three tiers, but since screen pixel updates are also subject to that same encode/transcode/etc, wouldn't they be closer together?
I wonder what format the audio is in when sent over RDP? perhaps there is a way that we can skip some of the processing on the SRSS? maybe as opposed to decoding RDP audio channel to 44.1/16 sending through sound device encoding to ALP audio then decoding back to 44.1/16 on the device, we could do something tricky. Let's use our advantage of owning the SRSS code and put it to use. Perhaps uttsc could convert RDP audio directly to ALP audio and flag the data as already converted so utaudio skips the conversion. That would reduce at least one conversion/buffer. Or, send the RDP audio stream directly to the DTU allowing updated firmware to decode it directly. just thinking out loud Brad On Wed, 2006-12-06 at 17:50 -0800, Craig Bender wrote: > It's not a "problem", it's inherit to RDP. > > Think of it this way: > > Source ------> MS Server (decompress, decode, transcode) ====> Client > > (note the fatter pipe) > > Add another hop for Sun Ray > > Source ----> MS Server (decompress, decode, transcode) ====> Sun Ray > Server (transcode to SRSS) ====> Sun Ray > > Kevin Burtch wrote: > > > > We are seeing about a 4-second delay in audio output on Sun Ray DTUs > > coming from any Windows system via RDP. > > We've tried with both the current version of the Connector and > > rdesktop, both have the exact same symptoms so it appears to be an > > SRSS problem, not a Connector problem. > > > > Playing any video (no matter how small), whether it's mpeg, flash > > based, etc. - the audio starts 4 seconds after the video, and stops 4 > > seconds after the video - even if the application is closed... it > > keeps playing for 4 seconds. > > We see this with zero load on the servers, only one person using one DTU. > > > > I'm told that even playing an audio file has the same effect... the > > scrollbar slides for a while before the audio starts. > > > > It appears the Sun Ray Server software is performing way too much > > buffering of the audio. > > Has anyone else had this experience? > > > > FYI: > > SRSS 3.1 + 120879-05 > > T1000 running Solaris 10 1/06 > > > > > > For what it's worth, I've seen this work several years ago when I set > > up a classroom for a local charter school... 30 users on a V210 with > > no sync problems using rdesktop ( 1.2 I think). > > > > Thanks, > > Kevin > > > > > > > > ------------------------------------------------------------------------ > > > > _______________________________________________ > > SunRay-Users mailing list > > [email protected] > > http://www.filibeto.org/mailman/listinfo/sunray-users > > > _______________________________________________ > SunRay-Users mailing list > [email protected] > http://www.filibeto.org/mailman/listinfo/sunray-users Brad Lackey Desktop Product Lead US Software Practice (720) 548-3339 [EMAIL PROTECTED]
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