Intro to the Microprofiler — Transcript

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1. 0:05in this series of videos I'm going to be
2. 0:07showing how to use the micro profiler in
3. 0:09Roblox studio if you're not familiar
4. 0:11with building or scripting in Roblox
5. 0:13Studio you might find it more helpful to
6. 0:16watch a few other beginner videos before
7. 0:18diving into this series this is an
8. 0:20advanced tool for developers to debug
9. 0:22performance problems if you've got frame
10. 0:25rate drops which players often call lag
11. 0:27or frame lag uh you may find this tool
12. 0:31helpful so what is the micro profiler in
13. 0:34studio you can press contrl F6 or
14. 0:37command F6 if you're on a Mac to bring
15. 0:39up this bar this bar is a real-time
16. 0:43display of CPU and GPU usage if it stays
17. 0:47consistently low then we know that we're
18. 0:49in good shape so now that I've got this
19. 0:51up I can press contrl P or if you're on
20. 0:54a Mac that's command P to bring up this
21. 0:56next view notice how the scrolling in
22. 0:59this top has stopped that's because
23. 1:01we're looking at the data at the time
24. 1:04which we paused so then what exactly do
25. 1:07we have here so this is a timeline view
26. 1:10of what's going on in game the white
27. 1:13lines you see are the frames that are
28. 1:14being rendered if we're maintaining a
29. 1:17smooth UH 60 frames per second these
30. 1:20should be spaced about 16 milliseconds
31. 1:22apart which they are uh we are running
32. 1:24base plate so I would hope that we're
33. 1:26running at 60 frames per second so I can
34. 1:29pan around by clicking and dragging and
35. 1:31I can zoom in and out using my mouse
36. 1:34wheel you might be wondering what are
37. 1:36these labels on the side these labels
38. 1:38going horizontally represent the
39. 1:40individual threads going on in the
40. 1:42Roblox engine if you're not familiar
41. 1:45with threads just think of them as a
42. 1:46separate bits of work that the Roblox
43. 1:48engine needs to do anyway I can zoom in
44. 1:52on one of these bars within one of these
45. 1:54threads these are the actual tasks
46. 1:56running in each of the game's threads
47. 1:59how long the bar is shows how long that
48. 2:02task takes you might be wondering what
49. 2:04all these individual bars are I'll cover
50. 2:07that in a later video one thing to note
51. 2:09however see how everything here takes a
52. 2:12lot less than the time in between frames
53. 2:15this is good we want to keep this so I'm
54. 2:17going to zoom out I'm going to press
55. 2:18contrl P to unpause the micro profiler
56. 2:22and now if I press run I see a brief
57. 2:26spike in the bar that's the game loading
58. 2:28this is to be expected
59. 2:30if I pause the micro profiler and move
60. 2:33over to the spike I see a lot of stuff
61. 2:35going on we've got a bunch of space in
62. 2:38between these frames back there we got
63. 2:40some drop frames here this all makes
64. 2:42sense so I'm going to go ahead and
65. 2:44unpause it and now that we're in game it
66. 2:47goes back to normal anyway that's the
67. 2:50basics of the micro profiler check out
68. 2:52the next video for some real world
69. 2:54examples and solutions to Performance
70. 2:56problems
71. 2:57[Music]