On: Go: Execution Tracer Overhaul

[goranmoomin]

Trying to understand the document as a Go outsider, but it seems that the document is assuming that the reader knows what Ps, Ms, and Gs are? Anyone knows what they are? It seems that it’s a scheduling resource… but I can’t find any further info.

Edit: It seems like

- P: Logical CPU cores

- M: OS-level threads

- G: Goroutines

[4ad → goranmoomin]

The document's intended audience is Go runtime authors, so yes, of course it assumes the reader know how the Go runtime works.

A somewhat out of date explanation of Ps, Ms, and Gs by yours truly:

https://news.ycombinator.com/item?id=12460807

https://news.ycombinator.com/item?id=12460574

[4ft4 → goranmoomin]

P‘s are logical processors, M‘s are OS Threads and G‘s are goroutines. I don’t know who coined these terms or abbreviations but I first heard of them from Bill Kennedy from ArdanLabs in his ultimate go course. So I think these are go specific terms. Maybe the go Team introduced them prior.