Call Graph Inspector
The Call Graph Inspector renders the function call graph for a selected project version as an interactive, progressively expandable graph. The initial view surfaces the highest-impact functions ranked by Response Time. From there, the full graph is explored node by node through on-demand expansion. The canvas supports scroll-to-zoom and click-and-drag panning; any node can be repositioned by dragging.
Graph Layout and Containers
Functions appear as nodes grouped in color-coded cluster subgraphs — one cluster per binary. Each cluster carries a draggable label identifying the binary. Nodes move freely anywhere on the canvas.
When multiple binaries are selected, all are loaded simultaneously and cross-binary call edges are drawn wherever they exist.
Nodes
Each node represents a single function from the analyzed binary. The node label shows the short function name. Clicking a node opens its Expansion Panel, which displays the fully-qualified name alongside the three timing metrics below.
Timing Metrics
Response Time
Worst-case time from function entry to exit, including all time spent in callees.
Throughput Time
Worst-case time from function entry to exit, excluding time spent in callees.
Bottleneck Time
Worst-case time spent consecutively inside the function body.
All three values display in the most readable unit (ns / µs / ms / s). A dash (--) indicates no data was recorded for that function.
Node Colors
Blue
Default — function is rendered but not selected
Orange
Selected — the most recently clicked function
Relations
Each directed edge represents an observed call from one function to another, derived directly from collected execution traces.
Edge Labels
Every edge shows a call count — the number of times that specific call was recorded across all collected execution traces.
Edge Colors
Colors are relative to the currently selected node and reset each time the selection changes.
Gray
Default — not connected to the selected node, or no node selected
Orange
Outgoing — the call originates from the selected function
Purple
Incoming — the call terminates at the selected function
Edge Style
All edges are Bézier curves with a triangle arrowhead pointing toward the callee. Self-referencing calls (recursive functions) render as looped arcs.
Expansion Panel
Clicking any function opens the Expansion Panel, which shows:
Function name — short and fully-qualified
Response Time, Throughput Time, and Bottleneck Time for that function
Incoming edges — count of edges currently visible versus total available
Outgoing edges — same counter
Edges are added directly from the panel in two ways:
+10
Loads the next 10 edges in that direction
Expand All
Loads all remaining edges in that direction at once
Initial Graph Load
On load, the graph surfaces a ranked subset of functions and a bounded number of edges per function. Functions with the highest Response Time load first — the most impactful call chains are always visible by default.
Load limits are adjustable in the Advanced Options panel:
Total Functions (Maximum)
50
Upper bound on functions loaded across all selected binaries
Functions per Binary (Minimum)
10
Each binary contributes at least this many functions, even when the total cap is reached
Edges per Function (Maximum)
3
Number of outgoing edges loaded per function in the initial view
Filtering and Search
The filter bar accepts a text query matched against function names. Three match modes are available:
Substring (default)
Functions whose name contains the query
Whole Word
Functions whose name exactly equals the query
Regex
Treats the query as a regular expression
Case sensitivity toggles independently of the match mode.
The filter panel also provides:
Binary selection — show or hide individual binaries
Advanced Options (tune icon) — adjust the load limits described above
Applying new filter settings clears the current graph and reloads it from scratch.
Toolbar Controls
Focus on function… dropdown
Centers and zooms the viewport onto any visible function and opens its Expansion Panel
Reset
Clears the graph and reloads with the current filter settings
Zoom Out
Fits the entire graph into the viewport
Tooltips
Hovering over an edge shows a tooltip identifying the source and target functions:
The tooltip follows the cursor and disappears when the cursor leaves the edge.
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