Quote:
Originally Posted by Ryushin
So I upgraded my server using a used Supermicro motherboard and I ordered two Xeon E5-2680 V4 (14 cores) processors for it from Ebay. Got everything installed on Tuesday.
I configured my virtual machine with to use 24 cores and two threads for a total of 48 CPU threads. Gave the VM 32GB of RAM as well. I am not using NUMA.
Run the x265 Benchmark and received a score of 59.2 so I was happy with this.
Received Moonfall in 4K from Amazon and I proceeded to add it to RB. Noticed i would have to do a bit of degraining and enabled MDegrain2 with a THSAD value of 200. Started the encoding with two servers and was amazed at how slow the encoding went and how it was not utilizing the CPU.
So I did a test encoding with no MDegrain2 and it was fast. So most likely it was the threading problem with MDegrain2. My "Use multiple processing threads" setting was set to the default of 0 which I think means use a thread for each CPU thread which would be 48.
So I ran some tests by lowering the number of threads used for MDegrain2 and the results were dramatic:
1 Minute Chunk Size, First Chunk, 1 Encoding Server
No MDegrain - 6.38 fps (CPU running about 45-85%)
MDegrain2 48 threads (0 for unlimited) - 1.27 fps
MDegrain2 24 threads - 1.29 fps
MDegrain2 18 threads - 2.31 fps
MDegrain2 15 threads - 4.36 fps
MDegrain2 14 threads - 4.44 fps
MDegrain2 13 threads - 4.38 fps
MDegrain2 12 threads - 4.15 fps
MDegrain2 10 threads - 3.62 fps
1 Minute Chunk Size, First and Second Chunk, 2 Encoding servers
No MDegrain - 4.17 and 12.13 fps = 16.30 fps (CPU running about 92-100%)
MDegrain2 15 threads - 3.05 and 3.62 fps = 6.67 fps
MDegrain2 14 threads - 3.18 and 4.22 fps = 7.40 fps
MDegrain2 13 threads - 3.26 and 3.96 fps = 7.22 fps
So I hope this helps someone who has a highly threaded setup and that you will probably have to tune the MDegrain2 thread settings for each machine.
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Hi Ryushin, This is all very interesting, as I seem to be having a similar problem, not a particular filter but EVERYTHING
I've had a dual Xeon E5-2697v2 (12 cores) setup for a while, and it's worked good 'til now, I "transplanted" it into a case, instead of being directly screwed to a table !!
The only thing I changed was the type & amount of RAM. (more)
I did a test run with it today, and it was SLOW, an old dual Xeon X5690 (a measly 6 cores) system was twice as fast, which is pretty sad.
I've tried a few "thread" settings, but nothing seems to help.
I'm running Windows Server 2022, might need to try "normal" Windows.