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Issue 2548253002: Do not log FirstMeaningfulPaint status if page load aborted before first paint (Closed)

Created:
4 years ago by Kunihiko Sakamoto
Modified:
4 years ago
CC:
chromium-reviews, csharrison+watch_chromium.org, loading-reviews+metrics_chromium.org
Target Ref:
refs/pending/heads/master
Project:
chromium
Visibility:
Public.

Description

Do not log FirstMeaningfulPaint status if page load aborted before first paint FirstMeaningfulPaintSignalStatus UMA from canary channel indicates that about 32% of page loads did not reach network stable. However, FirstMeaningfulPaintStatus histogram says it is 22%, probably because the latter is logged only for page loads that had first paint. This patch replaces FirstMeaningfulPaintSignalStatus with FirstMeaningfulPaintSignalStatus2, which ignores page loads without first paint. BUG=632081 Committed: https://crrev.com/96e6c826a5129e71b7dcce2c8f137f47ed4d739f Cr-Commit-Position: refs/heads/master@{#436804}

Patch Set 1 #

Patch Set 2 : version bump #

Unified diffs Side-by-side diffs Delta from patch set Stats (+31 lines, -14 lines) Patch
M chrome/browser/page_load_metrics/observers/core_page_load_metrics_observer.cc View 1 2 chunks +16 lines, -14 lines 0 comments Download
M tools/metrics/histograms/histograms.xml View 1 2 chunks +15 lines, -0 lines 0 comments Download

Messages

Total messages: 26 (18 generated)
Kunihiko Sakamoto
4 years ago (2016-12-05 06:25:19 UTC) #9
Charlie Harrison
Generally LG, but a major change to the metric like this usually warrants a version ...
4 years ago (2016-12-05 15:43:46 UTC) #10
Kunihiko Sakamoto
+isherman for histograms.xml On 2016/12/05 15:43:46, Charlie Harrison wrote: > Generally LG, but a major ...
4 years ago (2016-12-06 08:37:23 UTC) #13
Charlie Harrison
LGTM
4 years ago (2016-12-06 15:29:21 UTC) #14
Ilya Sherman
Metrics LGTM, thanks.
4 years ago (2016-12-06 21:53:17 UTC) #15
commit-bot: I haz the power
CQ is trying da patch. Follow status at https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.org/2548253002/40001
4 years ago (2016-12-07 00:12:06 UTC) #21
commit-bot: I haz the power
Committed patchset #2 (id:40001)
4 years ago (2016-12-07 01:00:42 UTC) #24
commit-bot: I haz the power
4 years ago (2016-12-07 01:02:31 UTC) #26
Message was sent while issue was closed.
Patchset 2 (id:??) landed as
https://crrev.com/96e6c826a5129e71b7dcce2c8f137f47ed4d739f
Cr-Commit-Position: refs/heads/master@{#436804}

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