Add a script to measure key performance information for MayaUsd Vp2RenderDelegate.

[williamkrick]

This script measures time taken for key operations in Maya using Vp2RenderDelegate for the purpose of automated performance testing.

The script is measuring first frame time, consolidation time, tumble performance, playback performance, selection performance and file new performance.

An example of calling the script in Maya:

import mayaUsd.lib.analyticMayaUsdPerformance as analyticMayaUsdPerformance

cameraTranslate = [-13000, -2000, 6000]
cameraRotate = [60, 0, -90]
print( analyticMayaUsdPerformance.analyticMayaUsdPerformance().run('myFile.usd', cameraTranslate, cameraRotate, 1, 20) )

The script returns JSON data. An example output looks like:

{
   "select_all":{
      "time":0.5999999999999943,
      "memory":[
         130956.921875,
         2811.640625
      ]
   },
   "selected":{
      "consolidate":{
         "time":0.030000000000001137,
         "memory":[
            130956.921875,
            2811.640625
         ]
      },
      "playback":{
         "time":0.5,
         "end_frame":20.0,
         "start_frame":1.0,
         "memory":[
            130956.921875,
            2812.078125
         ]
      },
      "tumble":{
         "time":0.480000000000004,
         "frame_count":19,
         "memory":[
            130956.921875,
            2815.6484375
         ]
      }
   },
   "not_selected":{
      "consolidate":{
         "time":0.46999999999999886,
         "memory":[
            130956.921875,
            2550.30078125
         ]
      },
      "playback":{
         "time":0.35999999999999943,
         "end_frame":20.0,
         "start_frame":1.0,
         "memory":[
            130956.921875,
            2554.546875
         ]
      },
      "tumble":{
         "time":0.3299999999999983,
         "frame_count":19,
         "memory":[
            130956.921875,
            2554.51171875
         ]
      }
   },
   "new_scene":{
      "time":1.1599999999999966,
      "memory":[
         130956.921875,
         2286.1953125
      ]
   },
   "first_frame":{
      "time":2.549999999999997,
      "memory":[
         130956.921875,
         2242.53125
      ]
   },
   "maya_startup":{
      "memory":[
         130956.921875,
         721.52734375
      ]
   }
}

[mattyjams]

Cool, looks good to me.

We have some performance tests that generate JSON metrics files that look very similar:

maya-usd/plugin/pxr/maya/lib/pxrUsdMayaGL/testenv/testProxyShapeDrawPerformance.py

Line 51 in 70ea488

statsDict = {

But sadly these are still only run internally at Pixar. It would be great when we do get them running here to see if there's a way to unify how we generate these profiling stats files and how they're validated during tests.