core(scoring): update TBT score curve#12576
Merged
Merged
Conversation
| scoring: { | ||
| p10: 287, | ||
| p10: 200, | ||
| median: 600, |
Collaborator
There was a problem hiding this comment.
why not drop the median down a bit too?
Member
Author
There was a problem hiding this comment.
Reducing it would exacerbate the effect of variance. This scoring curve has the biggest slope of all of the metrics, so I'm wary to increase the slope even more.
connorjclark
approved these changes
May 28, 2021
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
4 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Part of #11866
Updates the Total Blocking Time control points to be closer to the intended methodology laid out in https://web.dev/performance-scoring/#metric-scores
In addition, if we were picking entirely new control points, the May 2021 HTTP Archive run gives
HA p08 - 19ms
HA p25 - 189ms
But we think these as our control points would be too jarring and aggressive for now. Still, there's room to improve, so we're doing a small shift of TBT being scored more strictly.
p10: 200
median: 600
Desktop remains unchanged.