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Issue 809895 link

Starred by 2 users
Status: WontFix
Owner: ----
Closed: Feb 2018
Cc:
pnangunoori@chromium.org
█ nattestad@chromium.org
hablich@chromium.org
mathias@chromium.org
danno@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Android
Pri: 2
Type: Feature



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[Chrome][Android 7.0/8.0] Request to enhance JavaScript performance up to iOS Safari

Reported by seiyon.p...@gmail.com, Feb 7 2018 
Steps to reproduce the problem:
1. Use benchmark tool "JetStream"
2. Open up Chrome64 and go to http://browserbench.org/JetStream/ on Pixel 2 XL device with Android 8.0 
3. Open up Safari 11 and go to http://browserbench.org/JetStream/ on iPhoneX device

What is the expected behavior?
JavaScrit performance on Chrome should be better than Safari or be the same as Safari.

What went wrong?
The performance of Safari is much better.

Did this work before? No 

Chrome version: 64.0.3282.140  Channel: stable
OS Version: 8.0
Flash Version:
JavaScript performance benchmark on Chrome and Safari.png
4.4 KB View Download

Comment 1 by pnangunoori@chromium.org, Feb 8 2018

Cc: pnangunoori@chromium.org
Components: Platform>DevTools>Performance>Tracing
Labels: -Type-Bug Needs-triage-Mobile Triaged-Mobile Type-Feature
Assuming this as Feature Request and updating the issue accordingly.

Observations by running the test from the URL: http://browserbench.org/JetStream/ on Pixel Android 8.1.0:

Chrome #64.0.3282.137 - 48.529
Chrome Canary #66.0.3342.3 - 49.611

Requesting dev team to look into this issue.

Thanks in advance!

Comment 2 by e...@chromium.org, Feb 8 2018

Components: -Blink Blink>JavaScript

Comment 3 by pfeldman@chromium.org, Feb 8 2018

Components: -Platform>DevTools>Performance>Tracing

Comment 4 by seiyon.p...@gmail.com, Feb 20 2018 

Dear Chrome team, kindly pinging.

Comment 5 by hablich@chromium.org, Feb 20 2018

Cc: nattestad@chromium.org mathias@chromium.org danno@chromium.org hablich@chromium.org
Status: Available (was: Unconfirmed)
Thanks for the report! What of your real-world use cases would benefit from us improving on JetStream?

Comment 6 by seiyon.p...@gmail.com, Feb 26 2018 

For now, sorry I can't provide real-world use cases but I believe the improvement on JetStream will have a good impact on many uses cases from the perspective of users.

Comment 7 by mathias@chromium.org, Feb 28 2018

Status: WontFix (was: Available)
The V8 team focuses on real-world performance rather than synthetic benchmarks. In this case, it’s not clear whether implementing an optimization would result in any performance wins for real-world code. I’m closing this issue for now; we’ll revisit this once we have real-world data indicating this would be beneficial.
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