1313059 - Extremely slow startup and sometime crash on Win10 64bit, Nightly52.0a1 32bit Debug Build

Status: RESOLVED FIXED

(Core :: Disability Access APIs, defect)

Description

[Alice0775 White]

Extremely slow startup and sometime crash on mozilla-central-win32-debug build.


The problem appears since Nightly52.0a1 32bit Debug build
https://hg.mozilla.org/mozilla-central/rev/8b2d92343bcb398075c909c587ec020286528059
20161019080022


Steps To Reproduce:
1. start firefox.exe -no-remote -P
2. Choose profile that no addon (almost clean)
3. Optionally, type something in locationbar

Actual Results:
about:home would not load forever.
sometimes hang and crash.



Regression window(m-c win32 debug):
https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=03e795912fdbb000ac95f040d84e26d3eaa8c20a&tochange=8b2d92343bcb398075c909c587ec020286528059

Regression window(autoland win32 debug):
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=d74a9133f9a5c0a7374bef2a0be15e3ed7b37113&tochange=41d7a4864f3325cd9abcc5c5a17788334c8ca863

Regressed by: Bug 1310788

Comment 1

[Alice0775 White]

user_pref("accessibility.force_disabled", 1); seems to fix.

Comment 2

[Jim Mathies [:jimm]]

Alice, do you have any crash reports associated with this in about:crashes?

Comment 3

[Alice0775 White]

Attachment: firefox-debug_243c_2016-10-27_00-04-34-181.log

I am not familiar WinDbg. But, I attached log.

Comment 4

[David Bolter [:davidb] (NeedInfo me for attention)]

I tried yesterday and couldn't reproduce this locally on windows 10. I tried using IME, on screen keyboard, and ATs (separately)... but now I'm realizing this is a debug only behaviour? (I tried non-debug)

Is it possible to capture a cleopatra profile?

Comment 5

[Alice0775 White]

(In reply to David Bolter [:davidb] from comment #4)
> I tried yesterday and couldn't reproduce this locally on windows 10. I tried
> using IME, on screen keyboard, and ATs (separately)... but now I'm realizing
> this is a debug only behaviour? (I tried non-debug)

Yep, debug build only.

> 
> Is it possible to capture a cleopatra profile?


Content process takes 100% core. 
Initial page(about:home) is never finish.
And Gecko Profiler tool button is also unresponsive. So, I cannot get the cleopatra log.

Comment 6

[Alice0775 White]

bp-fbe1acc2-afc0-4922-a525-38cd52161027

Comment 7

[Alice0775 White]

If set startup page to about:blank instead of about:home, the browser is start normal speed.
However, then open webpage(e.g https://developer.mozilla.org/en-US/Add-ons/Code_snippets), the browser becomes hangup and sometimes tab crashes.

So, now, the debug build is unusable.
Anyway, this is debug build only.

Comment 8

[(No longer employed by Mozilla) Aaron Klotz]

That crash is a ShutDownKill crash like the ones being reported in bug 1279293. I'm not yet sure if/how this is related, so I'm not duping yet.

Comment 9

[Alice0775 White]

(In reply to Aaron Klotz [:aklotz] from comment #8)
> That crash is a ShutDownKill crash

because browser is hang/unresponsive all the time. I must kill browser. That is a miracle report.

Comment 10

[(No longer employed by Mozilla) Aaron Klotz]

I cannot reproduce this on my Surface Book with 32-bit Nightly. I am rebuilding with 64-bit and will try again.

Comment 11

[Alice0775 White]

(In reply to Aaron Klotz [:aklotz] from comment #10)
> I cannot reproduce this on my Surface Book with 32-bit Nightly. I am
> rebuilding with 64-bit and will try again.

Probably, installing IME or something accessibility device is needed to reproduce this.

Comment 12

[(No longer employed by Mozilla) Aaron Klotz]

The surface book has a touchscreen and a screen keyboard. I'm starting there. If that doesn't work then I'll move up to IME and screen readers.

Comment 13

[Ryan VanderMeulen [:RyanVM]]

Any updates here, Aaron?

Comment 14

[Ryan VanderMeulen [:RyanVM]]

Hi Alice, I assume this is still happening for you?

Comment 15

[Alice0775 White]

Reproduced on the bad build nightly52.0a1 debug ID:20161019080022
https://hg.mozilla.org/mozilla-central/rev/8b2d92343bcb398075c909c587ec020286528059

Verified to fix on nightly53.0a1 debug ID:20170109122607 https://hg.mozilla.org/mozilla-central/rev/0f9d69253ac67887b64f5efeffaebebb5929b1a7
and aurora52.0a2 debug ID:20170109140908 https://hg.mozilla.org/releases/mozilla-aurora/rev/10e1849db4be083d35c4e40a7d7a7b32a0437817

Comment 16

[Ryan VanderMeulen [:RyanVM]]

Thanks!