Http/2 connection is slow
Categories
(Web Compatibility :: Site Reports, defect, P3)
Tracking
(Not tracked)
People
(Reporter: dragana, Unassigned)
References
Details
There has been some reports that Http/2 is slow or it is not completing downloading some resources.
this was reported in bug 1613943. We did some investigation:
when http/2 is turned on, loading of the reported web site is much slower than if it is turned off. Turing off network.http.spdy.enabled.deps pref fix the problem as well. The pref turns off our http/2 priority scheme. The scheme is as old as http/2 implementation (~2015) and he have not had similar bugs before. It may happen that servers have added a feature that uses these priories, but it is not using them properly with our priority scheme. The priority scheme used by Chrome is different.
The CDN that the site from bug 1613943 is using is Akamai.
There are 2 more bug reports:
Bug 1613678 - I have checked and wetteronline.de/wetter/bonn uses Akamai as well
Bug 1614182 - I could not reproduce the problem here, but it may be that the use of a CDN is depent on the location the site is loaded from.
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Reporter | |
Comment 1•6 years ago
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The uri from bug 1613943 is https://www.rbcroyalbank.com/personal.html
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Reporter | |
Comment 2•6 years ago
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We could turn off priorities in our code, but I do not know how is that going to affect other sites, we may see performance regressions.
WE have plan to look into out http priorities this year, but that will be a longer project.
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Reporter | |
Updated•5 years ago
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Comment 3•5 years ago
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Not sure if this should live here, or in a Necko component. But setting to P3 because I'm not sure how it's actionable for our team.
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Comment 4•4 years ago
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I was not able to reproduce the issue on my side.
Verified with:
- https://www.wetteronline.de/wetter/bonn
- https://jp.finalfantasyxiv.com/lodestone/
- https://www.rbcroyalbank.com/personal.html
Tested with:
Browser / Version: Firefox Nightly 210315 (🦎 88.0a1-20210313094300)
Operating System: Samsung Galaxy S8 (Android 9) - 1440 x 2960 pixels, 18.5:9 ratio (~570 ppi density), Google Pixel 5 (Android 11) - 1080 x 2340 pixels, 19.5:9 ratio (~432 ppi density)
Dragana Damjanovic does the issue still occur?
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Reporter | |
Comment 5•4 years ago
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It is fine to close this issue. It was an issue on the server side.
Description
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