Server Version#: 1.23.3.4707
Player Version#: Latest Web players and App Players
OS: Debian 10 ( Buster ) on kernel 4.19.0-16-amd64
After updating to 1.23.3.4707 my streams wouldn’t buffer anymore.
On closer inspection my CPU was at 100% usage the whole time, transcoding a 720p stream ( it’s a Intel Xeon 1240L v5 with an Quadro K420 GPU, should be plenty powerful for a 720p stream ).
After restarting the ‘plexmediaserver’ service the CPU usage was at 0 again.
When opening one stream immediately 2 cores spiked to 100%, while not sending any data to the player.
Closing the stream would not stop the workload, so the 2 cores remained 100% used even when not playing anything on any device.
When opening a stream again, another 2 cores spiked to 100%, but there was still no buffering.
After making sure all streams were closed again, there were still 4 cores used 100% of the time.
Every opened stream seemed to peg another 2 cores at 100%, until I had a 100% load on all cores of my CPU, all while not a single frame of buffered data was received anywhere.
( Tested this on the android app and web browser ).
Solution:
Downgraded Plex server to version 1.22.3.4523 - now everything works as expected: when no stream is playing the server has barely any load, and buffered data is received in the clients.
Workloads for 720p streams spike to 70% for a few seconds then back down.
Side note:
I tried disabling Upnp in router settings ( as I found on another thread ), that didn’t make a difference.
Is this just me?
