Tokio Trace Viewer

📊

Drop a .bin trace file here or click to open

Expects D9TF binary format

or load demo trace

Spans

Task Detail

Queue Depth (global=blue, local max=orange)

Flamegraph ↗ Pop Out ✕ Close (Esc)

Scroll wheel	Scroll worker lanes vertically
⌘/Ctrl + scroll	Zoom in/out (centered on cursor)
Drag	Pan left/right
Click poll	Select task & show wake timeline
⇧ Shift+drag	Select region → flamegraph / blocking calls
⌥ Option+drag	Select region → zoom to fit

Tab	Navigate between UI regions
↑ / ↓	Zoom in / out
← / →	Pan left / right
Shift	Toggle region selection (analysis). Press once to start, ← → to extend, press again or Enter to confirm
Option / Alt	Toggle region selection (zoom). Press once to start, ← → to extend, press again or Enter to confirm
Esc	Cancel selection / close panels

Press Esc or click outside to close