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While you're going bananas on the pros of flame graphs, a significant con is that most of the names are unreadable. In your example, the legible information is
by vacri 10y ago
While you're going bananas on the pros of flame graphs, a significant con is that most of the names are unreadable. In your example, the legible information is not much more than what 'du -skh linux-4.9-rc5/*' would give you.
- brendangregg 10y agoYou can click to zoom, but in the default output I wouldn't call it a significant con anyway. It's usually (not always) an advantage. Take that ncdu output above: "/drivers" is visible in the flame graph, whereas "/virt" is not. It's only printing the names of the largest rectangles -- the ones you care about, helping draw your attention to where it should be drawn.