Marimekko · Diagram Design
10,000 CI minutes over 30 days, five pipelines wide and up to three runner operating systems tall. The mobile pipeline is a quarter of the bill, and 83% of it runs on macOS — one segment that is a fifth of everything.
mobile × macOS is the focal segment because it is the finding, not because it sorts first. Width says mobile is 24% of all minutes; height says 83% of those are macOS; the area is the 20% of the whole those two numbers multiply to.
Read across for the pipeline mix, down for the runner mix within a pipeline, and by area for the joint share. Every column is the full plot height, so a segment's height is always a share of its own column, never of the whole — that is what the area is for.
Minutes, not cost or count. macOS runner minutes are billed at a multiple of Linux, so the macOS segments understate spend; and a wide column can be a few long jobs or many short ones. The figure shows where time goes, not why.