1275031 - Firefox 48a regularly stalls

Status: RESOLVED INCOMPLETE

(Firefox :: Untriaged, defect)

Description

[John Drinkwater (:beta)]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:48.0) Gecko/20100101 Firefox/48.0
Build ID: 20160523004008

Steps to reproduce:

In basic use, every few minutes the whole browser will hang for a few (or more) seconds.
Running in safe mode does not stop the issue, so pretty certain extensions are not causing this.

Looking at an strace, firefox keeps getting stuck on a futex>

mprotect(0x7fe76ba77000, 4096, PROT_READ|PROT_WRITE) = 0
mprotect(0x7fe76ba77000, 4096, PROT_READ|PROT_EXEC) = 0
futex(0x7fe792800048, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
futex(0x7fe792800048, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7fe792800048, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
futex(0x7fe792800048, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7fe792800048, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
futex(0x7fe792800048, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7fe792800048, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
futex(0x7fe792800048, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7fe792800048, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
futex(0x7fe792800048, FUTEX_WAIT_PRIVATE, 2, NULL) = 0
futex(0x7fe792800048, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7fe792800048, FUTEX_WAIT_PRIVATE, 2, NULL) = 0
futex(0x7fe792800048, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7fe792800048, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
futex(0x7fe792800048, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7fe792800048, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
futex(0x7fe792800048, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
futex(0x7fe792800048, FUTEX_WAKE_PRIVATE, 1) = 0

and this repeats until the browser is free again.


Application Basics
------------------

Name: Firefox
Version: 48.0a2
Build ID: 20160522004024
Update Channel: aurora
User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:48.0) Gecko/20100101 Firefox/48.0
OS: Linux 4.2.0-36-generic x86-64
+ Ubuntu & gnome-flashback
Multiprocess Windows: 0/2 (Disabled)
Safe Mode: false

Graphics
--------

Features
Compositing: Basic
Asynchronous Pan/Zoom: none
WebGL Renderer: NVIDIA Corporation -- GeForce GTX 660 Ti/PCIe/SSE2
Hardware H264 Decoding: No
GPU #1
Active: Yes
Description: NVIDIA Corporation -- GeForce GTX 660 Ti/PCIe/SSE2
Vendor ID: NVIDIA Corporation
Device ID: GeForce GTX 660 Ti/PCIe/SSE2
Driver Version: 4.5.0 NVIDIA 364.19

Diagnostics
AzureCanvasAccelerated: 0
AzureCanvasBackend: cairo
AzureContentBackend: cairo
AzureFallbackCanvasBackend: none
CairoUseXRender: 0


It hung / stalled twice while searching bugzilla to report this… to highlight the frequency of it.

Comment 1

[Justin [:JW_SoftvisionQA]]

Please try refreshing your profile: https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings#
and also try testing in safe mode. Please reply with your findings.

Comment 2

[John Drinkwater (:beta)]

Apologies for being late, have been trying various things with my session and bookmarks to see if that is the reason.

(In reply to Justin [:JW_SoftvisionQA] from comment #1)
> Please try refreshing your profile:
> https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-
> settings#
The Refresh Firefox link here does not work. The reference to the same reset button being on about:support is also apparently wrong, it is not there.

(In reply to Justin [:JW_SoftvisionQA] from comment #1)
> and also try testing in safe mode. Please reply with your findings.
Initial report includes this information, safe mode has been tried and it still causes the stalls.

Things that have changed between Firefox being OK, and these stalls: Firefox updating. Potential Ubuntu package upgrades that included an Nvidia driver. That is all.

Comment 3

[Wayne Mery (:wsmwk)]

(In reply to John Drinkwater (:beta) from comment #2)
> Apologies for being late, have been trying various things with my session
> and bookmarks to see if that is the reason.
> 
> (In reply to Justin [:JW_SoftvisionQA] from comment #1)
> > Please try refreshing your profile:
> > https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-
> > settings#
> The Refresh Firefox link here does not work. The reference to the same reset
> button being on about:support is also apparently wrong, it is not there.
> 
> (In reply to Justin [:JW_SoftvisionQA] from comment #1)
> > and also try testing in safe mode. Please reply with your findings.
> Initial report includes this information, safe mode has been tried and it
> still causes the stalls.

might say something like "Refresh Nightly" or "Refresh Aurora"

Comment 4

[John Drinkwater (:beta)]

(In reply to Wayne Mery (:wsmwk, NI for questions) from comment #3)
> (In reply to John Drinkwater (:beta) from comment #2)
> > Apologies for being late, have been trying various things with my session
> > and bookmarks to see if that is the reason.
> > 
> > (In reply to Justin [:JW_SoftvisionQA] from comment #1)
> > > Please try refreshing your profile:
> > > https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-
> > > settings#
> > The Refresh Firefox link here does not work. The reference to the same reset
> > button being on about:support is also apparently wrong, it is not there.
> > 
> > (In reply to Justin [:JW_SoftvisionQA] from comment #1)
> > > and also try testing in safe mode. Please reply with your findings.
> > Initial report includes this information, safe mode has been tried and it
> > still causes the stalls.
> 
> might say something like "Refresh Nightly" or "Refresh Aurora"

What do you know, 3 weeks later and this button finally shows up in about:support! 

Since reporting this, my OSX laptop has updated to 48 and is now frequently locking as well. I know these are betas intended to provide feedback (and that is why I use them), but its just no longer usable as a daily driver.

Have always been heavy on tabs (used to happily run ~1400 ish), but after the removal of Panorama I have been slowly moving to using bookmarks entirely - after however many years use, I now have around 40000. I still have a healthy amount of tabs (100ish?) on desktop, but only 15 on laptop, for active work etc. Beyond that I could not say what I have configured to trigger this. Noscript & Stylish are my only extensions (and confirmed that safe mode does not mitigate this), all plugins are disabled.
Going to adjust the specifics of the bug..

Comment 5

[Justin [:JW_SoftvisionQA]]

Hello John, Is this issue still occurring on your machine?

Comment 6

[Wayne Mery (:wsmwk)]

1400 tabs is a bit insane.  At least on Windows I've not found Firefox to be performant when over 100-200 tabs unless using e10s

(In reply to Justin [:JW_SoftvisionQA] from comment #5)
> Hello John, Is this issue still occurring on your machine?

Comment 7

[Justin [:JW_SoftvisionQA]]

closing this issue due to lack of response from the reporter. Please reopen if this issue persists.