ThreadScope Tour/Zoom
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<p>What's going on there?</p></li> | <p>What's going on there?</p></li> | ||
| - | <li><p>Use the zoom in button to explore that space a bit more | + | <li><p>Use the zoom in button to explore that space a bit more</p> |
| + | <p>''Hint: you can also press +/- on the keyboard''</p> | ||
[[Image:ThreadScope-zoom.png|Zooming in]] | [[Image:ThreadScope-zoom.png|Zooming in]] | ||
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<li>'''TODO''' zoom out again, use bookmarks to help refocus | <li>'''TODO''' zoom out again, use bookmarks to help refocus | ||
</li></ol> | </li></ol> | ||
| + | |||
| + | == Hints == | ||
| + | |||
| + | * You can also press +/- on the keyboard to zoom in and out | ||
Revision as of 12:28, 9 December 2011
1 Objectives
- Use zooming to reveal more detailed performance issues
- Save your place with the bookmark feature and zoom back out
2 Steps
Open the sudoku3 ThreadScope profile created earlier
threadscope ./sudoku3.eventlog
Notice the initial lack of activity at the very beginning of program execution
What's going on there?
Use the zoom in button to explore that space a bit more
Hint: you can also press +/- on the keyboard
Notice how different the profile looks close up. What do you see? At closer inspection what looks like a moderate amount of activity is actually intense bursts using both cores, with pauses in between.
Save the point in the zoomed-in profile as a bookmark. To do so, click in the graph to move the blue cursor to a spot of your choice.
Then switch to bookmarks tab. Press the plus button to create the bookmark and click in the labels field to name it.
- TODO zoom out again, use bookmarks to help refocus
3 Hints
- You can also press +/- on the keyboard to zoom in and out
