WatchDog Posted August 1, 2018 Report Share Posted August 1, 2018 WO version: 6.1.6 Production computer utilizing 2 NIC ports with separate IP range 1 Switch in network Issue: I have experienced cases where a display machine or group of display machines from a cluster react to a UDP command with a consistent latency. The latency can be anywhere from tenths of a second to 2 seconds. Jumping to a marker or scrubbing the timeline does not induce latency… only when running a play command from the production machine. That alone suggests it is something inherent with WO’s use of UDP commands. My theory is that there is timing information built into the UDP packet, and somehow either the timing information is incorrect within the packet… or on the Windows end, the UDP packet is being delivered late, and thus the timing information in the packet is offset to what the display thinks is the system time. Either way, it is a disastrous bug. I have had it occur during heavy workload moments (transferring lots of data over the file share, making a high volume of changes to the timeline, etc…). On this last show, I didn’t remember to disable the file share port until I got into WalkIn. And the bug didn’t occur until we were about 80% into the show. But this is the first time I had the bug occur seemingly out of nowhere – as in I was not in a heavy production workload state when it occurred – just cueing through my show. Although I am not 100% convinced that it has anything to do with using a 2nd nic, I still feel like the 2nd nic being a root problem is a strong theory. I also have only encountered this when using virtual displays for video that then becomes re-entered onto the stage for distribution. I am in the process of testing whether or not the active 2nd NIC port or use of virtual displays to map content/standard video playback to displays is responsible. In the mean time, has anyone else experienced this issue when using a control cue to execute an auxiliary timeline play command? Quote Link to comment Share on other sites More sharing options...
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