CPU Usage Report Doesn't Match Usage

Description

CPU: 2x Xeon 2680v3 (12 core, 24 threads each = 24 cores, 48 threads)
FreeNas Version: FreeNAS-11.3-U3.2

I have Plex running in a Jail. I'm transcoding a 4k movie to optimize for a different resolution, and that uses between 30-35% CPU. And when I look at active processes, I can indeed see that Plex is chomping through a lot of CPU.

However, when I go to reporting, the CPU is displayed at a really low usage. I would have expected it to be around 1200-1600%. But it's closer to 100%.

(Report CPU in percentage is checked, and my understanding is that it should be 100% per core, so my system would cap out around 4800%)

 

Images attached to show the mismatch in reported information.

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Katalon Manual Tests (BETA)

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Bug Clerk January 14, 2021 at 7:33 PM

Bug Clerk December 21, 2020 at 6:29 PM

Bug Clerk December 18, 2020 at 8:03 PM

Bug Clerk December 18, 2020 at 8:01 PM

Matt Doyle December 8, 2020 at 6:20 PM

I don't not have a box running 12, so I can't tell you if the problem persists in that version.

 

It definitely goes above 100% on 11.3-U3.2, as shown in the screenshot.

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Katalon Platform

Created August 24, 2020 at 5:31 PM
Updated July 1, 2022 at 2:54 PM
Resolved December 21, 2020 at 6:29 PM