VS EU Active
Metric Description
The
VS EU Active
metric represents the percentage of overall GPU time that the execution units (EUs) were actively executing Vertex Shader instructions. This metric is important if vertex processing seems to be a bottleneck for selected rendering calls.
Possible Issues
- IfVS EU Activeis 50%, half of the overall GPU time was spent actively executing Vertex Shader instructions.
- IfVS EU Activeis 0%, no Vertex Shader was associated with the selected draw calls, or the amount of time actively executing Vertex Shader instructions was negligible.
To improve performance:
- IfVS EU Activeaccounts for most of the EU active time, then to improve performance you should simplify the vertex shader or simplify and optimize the geometry of your primitives.
- IfVS EU Activeis significant, you should examine your vertex shader code to find the reasons that might be causing stalls.