1362852 - Get stuck on "Transferring data from addons-discovery.cdn.mozilla.net". Page loading does not complete

Status: VERIFIED FIXED

(Core :: Audio/Video: Playback, defect)

Description

[Alice0775 White]

Attachment: screenshot

Build Identifier:
https://hg.mozilla.org/mozilla-central/rev/37a5b7f6f101df2eb292b1b6baaf1540c9920e20
Mozilla/5.0 (Windows NT 10.0; WOW64; rv:55.0) Gecko/20100101 Firefox/55.0 ID:20170507030205


Reproducible: 100%

Steps to reproduce:
1. Start Nightly.
2. Open about:addons and wait for page load(spinning tab icon stops and status tooltip disappers).
3. Middle mouse click on reload button so that the page will be duplicated.
   And wait for page load(spinning tab icon stops and status tooltip disappers).
4. Repeat step 3 in several times

Actual Results.
Eventually, Get stuck on "Transferring data from addons-discovery.cdn.mozilla.net". Page loading does not complete.

Expected Results:
The loading of the page should be completed correctly.

Comment 1

[Alice0775 White]

Attachment: http_log.7z

Http log with set MOZ_LOG=timestamp,rotate:200,nsHttp:5,nsSocketTransport:5

Comment 2

[Alice0775 White]

Firefox 54.0b5 seems to be not problem.

Comment 3

[Alice0775 White]

Attachment: about:suppot

Comment 4

[Dragana Damjanovic [:dragana]]

This is probably something similar to 1362821. I will take a look.

if you disable network.tcp.tcp_fastopen_enable and it disappears robably it is a same thing.

I will take a look at the log. Thanks!

Comment 5

[Alice0775 White]

Regression window:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=6b5f20da8bc90f3145980234cdc488e516c63325&tochange=c612b7357d7bf83de5edd7877f4e4602966b5a1b

Regressed by: c612b7357d7b	JW Wang — Bug 1347174 - per comment 10, limit the readahead size to prevent cache thrashing. r=cpearce


@:jwwang, Could you look this?

@:dragana,  it seems another bug.

Comment 6

[Alice0775 White]

(In reply to Dragana Damjanovic [:dragana] from comment #4)
> This is probably something similar to 1362821. I will take a look.
> 
> if you disable network.tcp.tcp_fastopen_enable and it disappears robably it
> is a same thing.


FYI, setting network.tcp.tcp_fastopen_enable = false does not fix.

Comment 7

[JW Wang [:jwwang] [:jw_wang]]

(In reply to Alice0775 White from comment #2)
> Firefox 54.0b5 seems to be not problem.

Can you follow the instructions in https://bugzilla.mozilla.org/show_bug.cgi?id=1347174#c8 to change the prefs and see if you can still repro the issue on 54?

Comment 8

[Alice0775 White]

(In reply to JW Wang [:jwwang] [:jw_wang] from comment #7)
> (In reply to Alice0775 White from comment #2)
> > Firefox 54.0b5 seems to be not problem.
> 
> Can you follow the instructions in
> https://bugzilla.mozilla.org/show_bug.cgi?id=1347174#c8 to change the prefs
> and see if you can still repro the issue on 54?

Yes,
I can reproduce the problem on 54.0b5 with set "media.cache_resume_threshold" to 10 and "media.cache_readahead_limit" to 30.

https://hg.mozilla.org/releases/mozilla-beta/rev/06bf49fb579575e4813aa54127f67c22964c822b
Mozilla/5.0 (Windows NT 10.0; WOW64; rv:54.0) Gecko/20100101 Firefox/54.0 ID:20170504103226

Comment 9

[JW Wang [:jwwang] [:jw_wang]]

It turns out that this is not a regression from bug 1347174 but a duplicate of bug 1361756. The change in bug  	1347174 just reveals the problem that was already there.

Comment 10

[Alice0775 White]

Fixed range:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=4c79f09831e75cabc6837dd391184b7a9932df24&tochange=cba5c15d4c9885d1a0a01594edff8a154efd5c37


fixed by bug 1361756