Share via

[Bug Report] GPU Engine checkboxes don't correspond to the graphs shown

LukeU 16 Reputation points
2021-04-30T07:30:37.21+00:00

In Process Explorer my GPU graph always shows 0% . I tracked it down to having specific engines selected, despite these engines being "busy" on the Engines screen. See: [System Information > GPU tab > Engines button] .

The "busy" engines (13, 19, and 22) were indeed checked, so I would have expected the overview GPU graph to display some usage, but it remained pegged on 0%.

Through trial and error I found that checking only the "idle" looking engine 9, the overview GPU would show up to 100% (as expected for a "busy" engine). I could not find any checkboxes that would correspond to the other 2 "busy" engines.

So something must be out of sync between the checkboxes and the graphs shown on the Engines tab.

I upgraded the SysInternals suite & Nvidia drivers to recent versions (both were ~2 years old prior to that). It made no difference.

Version details:

  • Process Explorer : 16.32
  • Windows 10 x64 : 10.0.18363 Build 18363
  • Video card: GeForce 1060 6GB
  • nVidia driver : 462.31

Engine 13 was performing usual display tasks. Engines 19 & 22 scientific computation via the BOINC client.

Sysinternals
Sysinternals

Advanced system utilities to manage, troubleshoot, and diagnose Windows and Linux systems and applications.

3 answers

Sort by: Most helpful
Most helpful Newest Oldest
  1. SortaCore 0 Reputation points
    2026-04-17T01:54:46.72+00:00

    At this point (v17.11) the GPU % overall calculation just seems unrelated to the engines.

    User's image

    The engines show as 90%+ (doing Folding@Home), but the GPU Usage % overall is still 65%. I've tried selecting all the engines that are 90%+, and just one, and it's always 65%, as if there's an invisible engine being included.

    And I'm not sure what's going on with display of that last row.

    Task Manager is currently a more reliable GPU % graph. Maybe Process Explorer could take some detail from that.

    0 comments
  2. Lorenzo Ciuciat 0 Reputation points
    2025-09-07T14:20:26.96+00:00

    Same bug present in updated ProcExp version 17.06 (Build time: Tue May 28 17:50:44 2024): in my case I need to check "Engine 10" to get live monitoring "Engine 24" under "GPU Usage".

    Screen attached.

    LorenzoUser's image

    0 comments
  3. AySz88 1 Reputation point
    2022-11-28T09:17:16.03+00:00

    I agree this looks like a bug in Process Explorer. In the tooltip that appears when hovering over otherwise blank-looking GPU Usage (and GPU Engine Usage) graphs, processes will show some percent usage of an engine, but the engines will still have "total" zero or 0.01 usage (nonsensical, presuming the same semantics as the CPU version). It's been like this for years.

    0 comments

Your answer

Answers can be marked as 'Accepted' by the question author and 'Recommended' by moderators, which helps users know the answer solved the author's problem.