Server Version#: Version 1.25.0.5246 Player Version#:IOS 7.25 and Web Version 4.66.1 OS: Rocky Linux Also Tested with CentOS Stream I have a plex virtual machine and I have tried with 4 CPUs and 6 CPUs and 8 CPUs assigned. However when I play a movie with a high bit rate and it attempts to transc…

You’ll never use every single bit of the CPU. Transcoding is multi-threaded. Input demultiplexer thread Video decode threads Audio decode threads Subtitle burning thread (if subtitles are burning-n) Subtitle conversion thread (if subtitle format is being converted Audio encoding threads Video e…

[image] fanta06: The play back stutters and hangs. I would expect that the cpu would be 100% if it didn’t have enough power. Can you provide the DEBUG logs which capture the stuttering so we can find out where the problem is?

Let me move additional info here in the thread sorry for the confusion. Additional Info It seems when I set the player to resolution under 8mbps then it plays fine but 8mps or up does not play smoothly. The CPU usage is the same no matter the player resolution selection. So it seems that the transc…

[image] fanta06: . Actually I’m playing the web on the OS host so it’s a software switch and I’m pretty sure it should have fast connection. Browsers are very limited. I have an i7-8809G CPU and, in Chrome, it can’t manage more than 30 Mbps reliably without jittering all over the place. …

Thanks for your help. I’ll upload another screen shot in case it’s useful and logs. For mine it won’t do over 8Mbps But I also see this in the IOS app as well. I can get you more screen shots of info if helpful. Plex Media Server Logs_2021-11-24_22-13-02.zip (507.0 KB) [Screen Shot 2021-11-24 at…

Thanks for the logs. I immediately see the problem. SkyLake cannot process HEVC in hardware. You need its bigger brother (i7-7700) to decode HEVC. You can’t get more than those 8 Mbps out of it because you’re trying to transcode HEVC. The raw CPU clock can’t keep up with the demand due to …

Thank you for the info. So if I understand it correctly the memory bus on that CPU can’t feed the CPU fast enough. So the CPU can’t get to 100% usage because it’s not getting the data fast enough do do any processing. I guess it’s the type of data the HEVC is that doesn’t allow the pipline to run at…

[image] [INFO] Plex, 4k, transcoding, and you - aka the rules of 4k Tips, Tricks & How-Tos NOTE: for 2022 – Plex has come a long way since this FAQ was originally written, HW transcoding has become more available and more stable, and tone mapping was recently added to addr…

@fanta06 You don’t ‘throw more cores at the problem’. This is a “work smarter” , not “work harder” problem. HEVC was designed this way. They wanted to require hardware. Lucky for us, the hardware exists which does it effortlessly. My server i7-8809 (refined i7-7700 with AMD GPU as well) …

Plex not using All available CPU

Plex Media Server

TeknoJunky November 26, 2021, 3:40am 11

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Plex not using All available CPU

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