Microsoft finally standardises CPU usage reporting in Task Manager

Microsoft is finally changing the way Task Manager reports CPU utilisation to make it consistent across the different tabs. So apparently this has been gradually rolling out to the 34 different Windows 11 beta dev preview testing alpha release candidate service pack 4 channels since early this year, but then stopped the roll-out to fix some issues. These issues seem fixed now, as the roll-out restarted this week. It”s an important change that I think y’all will care about.

From the original announcement of the change back in February:

We are beginning to roll out a change to the way Task Manager calculates CPU utilization for the Processes, Performance, and Users pages. Task Manager will now use the standard metrics to display CPU workload consistently across all pages and aligning with industry standards and third-party tools. For backward compatibility, a new optional column called CPU Utility is available (hidden by default) on the Details tab showing the previous CPU value used on the Processes page.
↫ Amanda Langowski and Brandon LeBlanc at the Windows Blogs

Before this change, Task Manager’s Processes tab didn’t take the number of processor cores into account when calculating PCU usage, so you could see a process at 100% CPU usage even if it was only using one core. These new changes standardise CPU usage reporting across all tabs, taking the number of CPU cores into account properly.

Rejoice.