Following up on a closed issue: #12203
I noticed that the CPU report in Positron's Resource Monitor is far off from what my Mac's Activity Monitor reports (see screenshots). I'm assuming this is because R was not running in a multi-core environment. So the single CPU core that R was using was, in fact, at 100% usage. But that single core accounted for only about 12.5% of the CPU cores on my 8-core M3 MacBook Air.
If my huntch is correct, my suggestion would be to add a little note on Positron's Resource Monitor that says something like "100% of x/n cpu cores used by this interpreter" where x is the number of cores that R is using, and n is the total number of cores on the user's computer. If this message would be too complicated to add to Positron, then something like "100% of CPU cores used by this interpreter" could address this issue.
Figure 1: Positron's Resource Monitor
Figure 2: My Mac's Activity Monitor
Session info:
Positron Version: 2026.04.1 build 10
Code - OSS Version: 1.109.2
Commit: 5dfc92424b4381ca7139f3f0a122a65abc2a9383
Date: 2026-04-14T01:11:42.088Z
Electron: 39.3.0
Chromium: 142.0.7444.265
Node.js: 22.21.1
V8: 14.2.231.22-electron.0
OS: Darwin arm64 25.3.0
Following up on a closed issue: #12203
I noticed that the CPU report in Positron's Resource Monitor is far off from what my Mac's Activity Monitor reports (see screenshots). I'm assuming this is because R was not running in a multi-core environment. So the single CPU core that R was using was, in fact, at 100% usage. But that single core accounted for only about 12.5% of the CPU cores on my 8-core M3 MacBook Air.
If my huntch is correct, my suggestion would be to add a little note on Positron's Resource Monitor that says something like "100% of x/n cpu cores used by this interpreter" where x is the number of cores that R is using, and n is the total number of cores on the user's computer. If this message would be too complicated to add to Positron, then something like "100% of CPU cores used by this interpreter" could address this issue.
Figure 1: Positron's Resource Monitor
Figure 2: My Mac's Activity Monitor
Session info: