EXACTUS · EXECUTION TELEMETRY

Performance Observatory

⭳ JSON report
Loading steps.json…
Wall span—across tools
Tool runtime—sum of elapsed traces
Events——
Largest stall——
Slowest tool——
Silent time——
Hottest actor——

CONCURRENCY

Cross-tool execution map

activity stall

TOOL

All tools

Select a tool to inspect its critical path.

full trace drag/scrub · wheel to zoom · ←/→ step events · Shift+←/→ jump cursor —

EXECUTION GRAPH

Every thread's call tree · width is wall-clock time

click selects · double-click or Enter drills in · Esc drills up · wheel zooms · drag pans

SELECTED STEP

Select a bar.


              

              

                

                  

                    
CHILDREN

                    
Largest nested steps

                  

                

                

              

            

          

          

            

              

                

                  

                    
CRITICAL PATH

                    
Largest silent gaps

                  

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HOT LOOPS

                    
Repeated operations

                  

                

                

              

            

            

              

                

                  
PROFILER

                  
Execution profile: stages, density and stalls

                

                hover for exact event · zoom and pan above
              

              

                stagesevent densityeventsstallscursor
              

              

                
                
              

              

                

                  Local rate—
                

                

                  Previous gap—
                

                

                  Trace position—
                

                

                  Nearby events—
                

              

              

                

                  

                    Event—
                  

                  

                    Elapsed—
                  

                  

                    Timestamp—
                  

                  

                    MessageScrub the timeline to inspect an event.
                  

                  

                    Thread—
                  

                  

                    Cost—
                  

                

              

            

          

          

            

              

                

                  
WHERE THE TIME GOES

                  
Attributed time over the run, stacked by actor

                

                each step owns the time until the next step on its
                  thread
              

              
            

            

              

                

                  

                    
ACTORS

                    
Time by actor

                  

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OPERATIONS

                    
Time by repeated operation

                  

                

                

              

            

            

              

                

                  
SLOWEST STEPS

                  
Individual steps by measured or inferred cost

                

              

              

            

          

          

            

              

                

                  
CONCURRENCY

                  
Per-thread Gantt of attributed intervals

                

                red bars are waits of 250 ms or more · follows the profiler
                  zoom
              

              
            

            

              

                

                  
THREADS

                  
Worker load

                

              

              

            

          

          

            

              

                

                  
RESOURCES

                  
CPU, memory and disk I/O of the whole process tree

                

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                  CPU mean—
                

                

                  CPU peak—
                

                

                  Memory peak—
                

                

                  Disk read—
                

                

                  Disk written—
                

                

                  Peak processes—
                

              

              

                
                
                
                
              

              

                red bands are stalls · zoom and pan follow the shared viewport
              

            

            

              

                

                  
CPU-BOUND OR WAITING

                  
Resource profile by actor

                

              

              

            

          

          

            

              

                

                  
STAGE BREAKDOWN

                  
Stage boundaries and inferred duration

                

              

              

            

          

          

            

              

                

                  
TRACE

                  
Raw event stream

                

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