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TheBommel
Known Participant
February 14, 2019
Question

Rendering only uses 18% of my CPU

  • February 14, 2019
  • 3 replies
  • 8428 views

I think the Title sais it all. I use the media encoder and the maximum CPU usage i get is 27% and most of the time it is 18%

I can't find any settings that force 100% CPU usage, can you help me?

    This topic has been closed for replies.

    3 replies

    N
    naumen
    Participating Frequently
    February 19, 2019

    had same issue with my pc processor , never went over 20 -30% rarely up to 60% (just few times), but then i upgraded my ram from 32GB to 64 - BIG BOOM , up to 92% of usage!!! pc is different animal now, big bump!

    i did read here before that there would be no difference to go higher then 32 , but it meters!

    i get real performance boost! i see it during color correction with film convert... and running through the footage in the time line,... now i have no delays , and i can play preview in FULL during color correction ... before, after some color correction i was not able to play the footage, only preview individual frames... 92% RAM USED during rendering , also i can now Convert and Save files much faster, not just some %% but like 3-5 times faster

    i came to conclusions that there is a needs to have a certain amount of RAM per Core to be able to use its full power

      T
      TheBommelAuthor
      Known Participant
      February 19, 2019

      ahhhh good to know! BUT why is my ram also far from being fully used ? the usage right now is around 16gb ... i will try it soon if it makes a difference.

      But right now even the Cpus that are working are not working 100% but also only 30-60% with some random peaks

      T
      TheBommelAuthor
      Known Participant
      April 8, 2019

      I updated to 64gb it changed not a bit :/

      Any help so far ? are there Bios settings or something like that i might missed or drive

      Peru Bob
      Peru Bob
      Community Expert
      February 14, 2019

      moved from Premiere Pro CC to Hardware Forum

      R Neil Haugen
      R Neil Haugen
      Brainiac
      February 14, 2019

      A full listing of your hardware, media, and effects would help illuminate this question.

      This could be simply because there's not enough internal bandwidth on your disc-access for the media involved. It could be because your RAM is minimal and can't go any faster therefore limiting the CPU. Or about a dozen other things.

      Neil

      Everyone's mileage always varies ...
      T
      TheBommelAuthor
      Known Participant
      February 15, 2019

      Hi!

      Thanks for the answer

      I have a

      AMD Threadripper 2970wx (24cores/48Threads)

      a Nvidia gtx 1080

      32gb Ram

      and my workfiles are on my 1tb main SSD

      here is a screenshot of the Taskmanager and so on

      Dropbox - Screenshot 2019-02-14 22.58.27.png

      I'm not at the studio until Monday but it will run some benchmarks then to check if everything works as expected

      i hope that helped.

      Is there a way to force premiere to use 100% or

      that it has the main priority on my pc ?

      Or could it be a driver or software issue?

      T
      TheBommelAuthor
      Known Participant
      February 17, 2019

      Also, you have to know that Adobe tries to design a program so that it can run on a wide range of systems - and yes, even el cheapo PCs with only dual-core CPUs. But if it were to optimize a program to run at its best with such a high-core-count CPU, then it might have had to require at least a 12-core CPU just to even run at all! That would have completely locked out most mainstream PC users from ever using that program.


      I mean there are multi cpu systems in render farms that work flawless since years.

      IMO they are simply late when it comes to optimizing for the ryzen systems ...

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