1217926 - Performance regression from enabling OMTC on Linux

Status: RESOLVED WONTFIX

(Core :: Graphics: Layers, defect)

Description

[Jeff Muizelaar [:jrmuizel]]

A user report of OMTC causing a very noticeable performance regression:
https://www.reddit.com/r/firefox/comments/3pm9oj/firefox_on_linux_became_slow_since_version_40/

Comment 1

[u279076]

(In reply to Jeff Muizelaar [:jrmuizel] from comment #0)
> A user report of OMTC causing a very noticeable performance regression:
> https://www.reddit.com/r/firefox/comments/3pm9oj/
> firefox_on_linux_became_slow_since_version_40/

Any chance you can get this person to come to Bugzilla so we can debug the issue?

Comment 2

[allegro.non.troppo1]

Hi,

I'm the OP of the reddit thread. I'd be glad to provide any information that might be necessary to debug the issue.

Comment 3

[u279076]

Hi, thanks for coming to Bugzilla and creating an account.

Could you start by attaching a copy of your about:support page to this bug report?

Comment 4

[allegro.non.troppo1]

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

Name: Firefox
Version: 41.0.2
Build ID: 20151014143721
Update Channel: release
User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:41.0) Gecko/20100101 Firefox/41.0
Multiprocess Windows: 0/1 (default: false)

Crash Reports for the Last 3 Days
---------------------------------

All Crash Reports

Extensions
----------

Name: Classic Theme Restorer
Version: 1.4.1
Enabled: true
ID: ClassicThemeRestorer@ArisT2Noia4dev

Name: Clean Links
Version: 2.7.1-signed
Enabled: true
ID: {158d7cb3-7039-4a75-8e0b-3bd0a464edd2}

Name: Firemacs
Version: 4.5.1-signed
Enabled: true
ID: {e98b7313-167d-48c6-89be-bc514d6de8d9}

Name: Google search link fix
Version: 1.5.2
Enabled: true
ID: jid0-XWJxt5VvCXkKzQK99PhZqAn7Xbg@jetpack

Name: Multifox
Version: 3.2.1
Enabled: true
ID: multifox@hultmann

Name: NoScript
Version: 2.6.9.39
Enabled: true
ID: {73a6fe31-595d-460b-a920-fcc0f8843232}

Name: Policeman
Version: 0.18.1.1-signed
Enabled: true
ID: [e-mail]

Name: Privacy Badger
Version: 1.0.3
Enabled: true
ID: jid1-MnnxcxisBPnSXQ@jetpack

Name: uBlock Origin
Version: 1.3.1
Enabled: true
ID: [e-mail]

Graphics
--------

Adapter Description: NVIDIA Corporation -- GeForce GT 330/PCIe/SSE2
Asynchronous Pan/Zoom: none
Device ID: GeForce GT 330/PCIe/SSE2
Driver Version: 3.3.0 NVIDIA 340.65
GPU Accelerated Windows: 0/1 Basic
Supports Hardware H264 Decoding: false
Vendor ID: NVIDIA Corporation
WebGL Renderer: NVIDIA Corporation -- GeForce GT 330/PCIe/SSE2
windowLayerManagerRemote: false
AzureCanvasBackend: cairo
AzureContentBackend: cairo
AzureFallbackCanvasBackend: none
AzureSkiaAccelerated: 0

Important Modified Preferences
------------------------------

accessibility.typeaheadfind.flashBar: 0
browser.cache.disk.capacity: 358400
browser.cache.disk.filesystem_reported: 1
browser.cache.disk.smart_size.first_run: false
browser.cache.disk.smart_size.use_old_max: false
browser.cache.frecency_experiment: 1
browser.download.importedFromSqlite: true
browser.places.smartBookmarksVersion: 7
browser.sessionstore.upgradeBackup.latestBuildID: 20151014143721
browser.startup.homepage_override.buildID: 20151014143721
browser.startup.homepage_override.mstone: 41.0.2
dom.apps.reset-permissions: true
dom.mozApps.used: true
extensions.lastAppVersion: 41.0.2
layers.acceleration.disabled: true
layers.offmainthreadcomposition.enabled: false
media.gmp-gmpopenh264.lastUpdate: 1445482200
media.gmp-gmpopenh264.version: 1.4
media.gmp-manager.buildID: 20151014143721
media.gmp-manager.lastCheck: 1445925428
network.cookie.prefsMigrated: true
network.http.speculative-parallel-limit: 0
network.predictor.cleaned-up: true
network.prefetch-next: false
places.database.lastMaintenance: 1445489388
places.history.expiration.transient_current_max_pages: 50008
plugin.disable_full_page_plugin_for_types: application/pdf
plugin.importedState: true
privacy.donottrackheader.enabled: true
privacy.donottrackheader.value: 1
privacy.sanitize.migrateFx3Prefs: true
storage.vacuum.last.index: 1
storage.vacuum.last.places.sqlite: 1445489387

Important Locked Preferences
----------------------------

JavaScript
----------

Incremental GC: true

Accessibility
-------------

Activated: false
Prevent Accessibility: 0

Library Versions
----------------

NSPR
Expected minimum version: 4.10.8
Version in use: 4.10.8

NSS
Expected minimum version: 3.19.2 Basic ECC
Version in use: 3.19.2 Basic ECC

NSSSMIME
Expected minimum version: 3.19.2 Basic ECC
Version in use: 3.19.2 Basic ECC

NSSSSL
Expected minimum version: 3.19.2 Basic ECC
Version in use: 3.19.2 Basic ECC

NSSUTIL
Expected minimum version: 3.19.2
Version in use: 3.19.2

Experimental Features
---------------------

Sandbox
-------

Seccomp-BPF (System Call Filtering): true
Seccomp Thread Synchronization: false
User Namespaces for privileged processes: true
User Namespaces: false
Media Plugin Sandboxing: true

Comment 5

[u279076]

Thanks, can you please check if this bug reproduces with a new Firefox profile?
https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

Comment 6

[allegro.non.troppo1]

Yes, the issue is present after creating and running in a new profile.

Comment 7

[u279076]

I take it you're using the proprietary drivers from NVIDIA. Does this happen if you switch to the open source drivers?

Comment 8

[allegro.non.troppo1]

Sorry for the late reply. I had to wait until I had opportunity to mess with the graphics drivers.

So it seems that the issue is not present with the nouveau drivers. However, the interesting thing is that after I tried this, then switched back again to the proprietary drivers, the issue seems to be gone also with the proprietary drivers.