This issue was brought up here, but just kind of ended with no real solution:

 

 

Using both avidemux or handbrake, I can't get docker containers to utilize the CPU 100%.

 

In handbrake, changed encoder settings from "fast" to "medium" and "high quality" but nothing.

 

Tried with both pinning 4 core+ht and no pinning, but still can't get it to utilize more than a bit over 50%:

 

 

Even tried prime95 but seeing similar results where CPU is not being utilized fully.

 

This is my third unraid build, first with a E5-1231v3 and then a Ryzen 9 x3900 - which was then subsequently downgraded to the current build (E5-1278v3 + chinese x99 mb).  All previous builds cpu would be at a 100% when using handbrake or avidemux.

 

I feel like it's a bios settings somewhere I'm not aware of, or a system wide setting that's missing.

 

Attached diags, any help would be appreciated.

jfs-diagnostics-20201110-2212.zip

Edited November 11, 20205 yr by thisguyhere

my guess would be that the two logical SMT cores for a real core are both ~50%, but since they share a single real core... that real core is actually at 100%