Try for better bench stability.

bench/DeferredCanvasBench.cpp

Index: bench/DeferredCanvasBench.cpp
diff --git a/bench/DeferredCanvasBench.cpp b/bench/DeferredCanvasBench.cpp
index 4caf2299fce5961875abeb9b8dd5b0b6616c4171..f183e27d1022ee1ee0798a5e5bd4d0e33b4014b3 100644
--- a/bench/DeferredCanvasBench.cpp
+++ b/bench/DeferredCanvasBench.cpp
@@ -32,11 +32,7 @@ protected:
         device->unref();
 
         initDeferredCanvas(deferredCanvas);
-
-        for (int i = 0; i < this->getLoops(); i++) {
-            drawInDeferredCanvas(deferredCanvas);
-        }
-
+        drawInDeferredCanvas(deferredCanvas);
         finalizeDeferredCanvas(deferredCanvas);
         deferredCanvas->flush();
     }