673459 - Investigate speeding up /tests/content/canvas/test/webgl/test_webgl_conformance_test_suite.html

Status: RESOLVED DUPLICATE of bug 660322

(Core :: Graphics: CanvasWebGL, defect)

Description

[Jonathan Griffin (:jgriffin)]

As part of the BuildFaster project (see https://wiki.mozilla.org/ReleaseEngineering/BuildFaster), we are investigating whether certain slow mochitests can be sped up.

test_webgl_conformance_test_suite.html is a slow test, average execution time on a recent run (in ms):

	win32-debug, 174951
	linux-opt, 21012
	macosx64-debug, 168473
	win32-opt, 24799
	linux64-debug, 150304
	linux64-opt, 20300
	linux-debug, 170302

Comment 1

[Jonathan Griffin (:jgriffin)]

Benoit, as the original test author, could you help see if this test could be sped up?  In particular, could anything be done to make the debug test times not be so dramatically larger than the opt test times?

Comment 2

[Benoit Jacob [:bjacob] (mostly away)]

I didn't realize that debug test times were so much higher than opt times. That's an interesting new element. It's not clear to me if there's much I can do, since many things in webgl are inherently computation-intensive, but it's interesting at least because it outlines that the incompressible part, spent waiting for the OpenGL implementation, is not that high.