I'm just curious if anyone else running Ubuntu Server has experienced new performance issues in the last week or two?
I noticed the issue the day after my unattended upgrades, so it's high on my list of suspicion but hard for me to confirm. I'm running out of ideas, and probably going rebuild the server or try to restore from a 4 month old tar backup. This week we've had to rely on Hulu to watch recordings.
If I record from multiple sources at once, playback while recording freezes completely, and comskip takes 20 minutes or more per show. When I can get playback to work (usually after it is no longer recording anything), recordings during that time are scrambled and it freezes the app if I try to play through the bad quality. CPU Usage is hovering around 50% when only recording 1 show, detecting commercials on another show, and processing newly recorded files.
Speedtest shows the server still connecting to the network at gigabit speeds, and the 2 HDHomerun tuners are plugged into the same switch as the server. Antenna signal quality is 100%. I've force closed the client app and updated it, and disabled commercial skip. I rebooted the HDHomeRuns, router, switch, and server. Yesterday I updated the HDHomeRuns to the latest firmware, and I even switched to Channels DVR pre-release to see if any new updates addressed the issue. I looked at the server logs and see some errors around com skip when it takes a long time, and around when I reboot the server or HDHomeRuns, but thats about it.
I've been running Channels DVR on my Ubuntu Mini PC for about 7 months now, and it has been rock solid. It has a 10th gen i5 8 core CPU with 8 GB of Ram, and a 4 TB external drive for recordings. When it was new I did some stress tests and it was obvious the hardware was overkill, able rip through anything I could throw at it- I recorded 10 streams (2 streaming, 8 OTA), while simultaneously playing back to my phone and transcoding playback to my web browser. CPU use for all that was only 30%