V8 Map Explorer

Drag and drop a v8.log file into this area, or click to choose from disk.

Stats

Timeline

Frequency

Transitions

Selected Map

Instructions

Visualize Map trees that have been gathered using --trace-maps.

Keyboard Shortcuts

SHIFT + Arrow Up: Follow Map transition forward (first child)
SHIFT + Arrow Down: Follow Map transition backwards
Arrow Up: Go to previous Map chunk
Arrow Down: Go to next Map in chunk
Arrow Left: Go to previous chunk
Arrow Right: Go to next chunk
+: Timeline zoom in
-: Timeline zoom out