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Issue metadata

Status: Duplicate
Merged: issue 791838
Owner:
Closed: Mar 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Windows , Mac
Pri: 1
Type: Bug-Regression



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First requests can have a negative started at time

Reported by ville.la...@luotta.fi, Feb 28 2018

Issue description

UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 Safari/537.36

Steps to reproduce the problem:
1. Open DevTools
2. Browse to https://www.google.com
3. Check the first request timings

What is the expected behavior?
Queued at: 0
Started at: 0

What went wrong?
Started at value is a negative number with a unit of µs.

Did this work before? N/A 

Chrome version: 64.0.3282.186  Channel: stable
OS Version: OS X 10.13.3
Flash Version:
 
timings.jpg
38.7 KB View Download
Labels: Needs-Triage-M64
Cc: sindhu.chelamcherla@chromium.org
Components: -Platform>DevTools Platform>DevTools>Network
Labels: -Type-Bug -Pri-2 hasbisect-per-revision ReleaseBlock-Stable Triaged-ET M-64 FoundIn-65 FoundIn-64 Target-65 Target-64 OS-Linux OS-Windows Pri-1 Type-Bug-Regression
Owner: caseq@chromium.org
Status: Assigned (was: Unconfirmed)
Able to reproduce this issue on reported version 64.0.3282.186 using Windows 10, Mac 10.13.3 and Ubuntu 14.04 with steps mentioned in comment#0. But issue is not reproducible on latest canary 66.0.3357.0. Hence providing reverse bisect info.

Last Bad Build: 66.0.3346.0
First Good Build: 66.0.3347.0

CHANGELOG URL:
The script might not always return single CL as suspect as some perf builds might get missing due to failure.
  https://chromium.googlesource.com/chromium/src/+log/da651de72deefafe29d81c522234a2557475cc2b..30f8822a37972aabd4b76d4559d1062d6799c9cb

Probably fixed by https://chromium-review.googlesource.com/912400

@ caseq: Please merge this to M-64 and M-65 if it is safe. Adding RB-Stable for M-64. Please change if not the case.

Thanks!

Comment 3 by caseq@chromium.org, Mar 1 2018

Mergedinto: 791838
Status: Duplicate (was: Assigned)
We won't merge it to either beta or stable, the severity of the bug doesn't justify the risk in my view. Note this is a large change and there were a few followups to fix the issues that resulted from it.

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