1192455 - Lag after using all day

Status: RESOLVED INCOMPLETE

(Toolkit :: Performance Monitoring, defect)

Description

[mazda_boy]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:39.0) Gecko/20100101 Firefox/39.0
Build ID: 20150806001005

Steps to reproduce:

I've been using Firefox all day, opening and closing tabs, etc. 


Actual results:

It's slowed down significantly, with lots of lag. I currently have 10 tabs open, and the TabData add-on shows a total of 341MB between those tabs being used. about:addons-memory currently shows 63MB being used. But Task Manager is currently showing Firefox using 1.1GB of RAM.


Expected results:

Firefox should only be using about 1/3 the RAM it is.

Comment 1

[[:Towkir] Ahmed]

Moving to a more appropriate component

Comment 2

[David Teller [:Yoric] - still alive but not very active]

Cc-ing njn, who knows more than the rest of us about these things.

Comment 3

[Nicholas Nethercote [inactive]]

When the memory usage high can you please obtains some memory reports and then attach them to this bug report? Instructions on how to do so are at https://developer.mozilla.org/en-US/docs/Mozilla/Performance/about:memory. Thank you.

Comment 4

[Nicholas Nethercote [inactive]]

A couple of extra notes:

- I don't know how these add-ons work, but accurate memory reporting is harder than it first appears and so they could easily be under-measuring.

- Even if they're accurate, there's plenty of "core" memory usage outside of tabs and add-ons. So there's no real reason to expect tabs + add-ons to equal the total. For example, in my current session, about:memory says the following about the web content process:

> 635.41 MB (100.0%) -- explicit
> ├──361.56 MB (56.90%) ++ window-objects
> ├──118.38 MB (18.63%) ++ js-non-window
> ├───81.35 MB (12.80%) ── heap-unclassified
> ├───40.00 MB (06.29%) ++ heap-overhead
> ├───17.39 MB (02.74%) ++ layout
> └───16.73 MB (02.63%) ++ (15 tiny)

"window-objects" is tabs, and it's only slightly more than half. Everything else is "core" stuff. In a single-process Firefox (which you're probably running) there will be even more "core" stuff reported.

So the premise of this bug is flawed. But the fact that you said things have slowed down is a concern, and memory reports might be helpful in understanding the slowdown.

Comment 5

[mazda_boy]

Attachment: about:memory log

Here's my about:memory log as requested. Currently showing 640MB usage with 6 tabs open (two email, two static pages, and two bugzilla).

Comment 6

[Nicholas Nethercote [inactive]]

Thank you for the reports. I took a look and I don't see anything unusual in there. Here's the high-level overview:

> 433.53 MB (100.0%) -- explicit
> ├──132.11 MB (30.47%) ++ window-objects
> ├───82.38 MB (19.00%) ++ js-non-window
> ├───75.13 MB (17.33%) ++ heap-overhead
> ├───45.34 MB (10.46%) ── heap-unclassified
> ├───32.27 MB (07.44%) ++ images
> ├───23.67 MB (05.46%) ++ storage
> ├───15.39 MB (03.55%) ++ gfx
> ├───13.26 MB (03.06%) ++ (17 tiny)
> ├────8.42 MB (01.94%) ++ network
> └────5.55 MB (01.28%) ++ workers/workers(chrome)

None of those measurements are surprising. I don't see any immediate leads for further investigation, unfortunately.

Comment 7

[mazda_boy]

Attachment: memory-report.json.gz

Here's another memory report from when it's running much slower. Not sure if there's anything noticeably different in this one.

Comment 8

[Nicholas Nethercote [inactive]]

(In reply to mazda_boy from comment #7)
> Created attachment 8656914 [details]
> memory-report.json.gz
> 
> Here's another memory report from when it's running much slower. Not sure if
> there's anything noticeably different in this one.

Two slightly odd things:

> │  ├────8.89 MB (01.73%) -- top(none)/detached
> │  │    ├──5.89 MB (01.15%) ++ window(chrome://browser/content/browser.xul)
> │  │    └──3.00 MB (00.58%) -- (4 tiny)
> │  │       ├──2.56 MB (00.50%) ++ window(https://www.google.co.uk/?client=firefox-a&rls=org.mozilla:en-UK:official&gws_rd=ssl)
> │  │       ├──0.38 MB (00.07%) ++ window(chrome://global/content/commonDialog.xul)
> │  │       ├──0.06 MB (00.01%) ++ window(https://plus.google.com/u/0/_/streamwidgets/recentposts?origin=https%3A%2F%2Fmail.google.com&hl=en-GB&jsh=m%3B%2F_%2Fscs%2Fabc-static%2F_%2Fjs%2Fk%3Dgapi.gapi.en.CuGQllkQH5E.O%2Fm%3D__features__%2Fam%3DAAQ%2Frt%3Dj%2Fd%3D1%2Frs%3DAItRSTOgiVjqnqWyQORRDsiFhK7_CfjvvA#rpctoken=272129570&_methods=noContent%2CcontentReady%2Cbutterbar%2Ckeystroke%2CresizeCanvas%2C_ready%2C_close%2C_open%2C_resizeMe%2C_renderstart&id=I1_1437116257270&parent=https%3A%2F%2Fmail.google.com&pfname=)
> │  │       └──0.00 MB (00.00%) ── window([system])/dom/other [5]

top(none)/detached windows are sometimes indicative of leaks, and often caused by add-ons. Can you copy + paste the contents of about:support to show which add-ons you have enabled?

Also:

> 894 (100.0%) -- js-main-runtime-compartments
> ├──732 (81.88%) -- system
> │  ├──677 (75.73%) -- (462 tiny)
> │  │  ├────4 (00.45%) ── [System Principal], resource://gre/modules/commonjs/method/core.js (from: resource://gre/modules/commonjs/toolkit/loader.js:250) [4]
> │  │  ├────4 (00.45%) ── [System Principal], resource://gre/modules/commonjs/sdk/base64.js (from: resource://gre/modules/commonjs/toolkit/loader.js:250) [4]
> │  │  ├────4 (00.45%) ── [System Principal], resource://gre/modules/commonjs/sdk/console/plain-text.js (from: resource://gre/modules/commonjs/toolkit/loader.js:250) [4]
> │  │  ├────4 (00.45%) ── [System Principal], resource://gre/modules/commonjs/sdk/content/mod.js (from: resource://gre/m

That's a lot of system compartments, and it's surprising that you have 4 copies of many of them. Maybe these are JetPack add-on modules and you just have 4 or more add-ons running.

Comment 9

[mazda_boy]

Here's the about:support info you asked for


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

Name: Firefox
Version: 40.0.3
Build ID: 20150826023504
Update Channel: release
User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:40.0) Gecko/20100101 Firefox/40.0
Multiprocess Windows: 0/1 (default: false)

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

All Crash Reports

Extensions
----------

Name: Adblock Plus
Version: 2.6.10
Enabled: true
ID: {d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}

Name: Reddit Enhancement Suite
Version: 4.5.4.1-signed
Enabled: true
ID: jid1-xUfzOsOFlzSOXg@jetpack

Name: Web Developer
Version: 1.2.5.1-signed
Enabled: true
ID: {c45c406e-ab73-11d8-be73-000a95be3b12}

Name: about:addons-memory
Version: 10.1-signed
Enabled: false
ID: [e-mail]

Name: Adobe Acrobat - Create PDF
Version: 1.2
Enabled: false
ID: [e-mail]

Name: Adobe Contribute Toolbar
Version: 6.1
Enabled: false
ID: {01A8CA0A-4C96-465b-A49B-65C46FAD54F9}

Name: Tab Memory Usage
Version: 0.1.8
Enabled: false
ID: jid1-fRvgLzKONCsPew@jetpack

Graphics
--------

Adapter Description: ATI Radeon 3000 Graphics
Adapter Drivers: aticfx64 aticfx64 aticfx32 aticfx32 atiumd64 atidxx64 atiumdag atidxx32 atiumdva atiumd6a atitmm64
Adapter RAM: 512
Asynchronous Pan/Zoom: none
ClearType Parameters: D [ Gamma: 2200 Pixel Structure: B ClearType Level: 0 Enhanced Contrast: 200 ] D [ Gamma: 2200 Pixel Structure: R ClearType Level: 100 Enhanced Contrast: 100 ]
Device ID: 0x9616
DirectWrite Enabled: false (6.2.9200.17461)
Driver Date: 4-29-2013
Driver Version: 8.970.100.1100
GPU #2 Active: false
GPU Accelerated Windows: 0/1 Basic (OMTC)
Subsys ID: 00000000
Supports Hardware H264 Decoding: false
Vendor ID: 0x1002
WebGL Renderer: Google Inc. -- ANGLE (ATI Radeon 3000 Graphics Direct3D11 vs_4_0 ps_4_0)
windowLayerManagerRemote: true
AzureCanvasBackend: skia
AzureContentBackend: cairo
AzureFallbackCanvasBackend: cairo
AzureSkiaAccelerated: 0
(#0) Error: Failed to allocate a surface due to invalid size Size(0,1)

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

accessibility.typeaheadfind.flashBar: 0
browser.cache.disk.capacity: 358400
browser.cache.disk.filesystem_reported: 1
browser.cache.disk.parent_directory: E:\Temp\Firefox
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browser.cache.disk.smart_size.use_old_max: false
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browser.startup.homepage_override.mstone: 40.0.3
dom.apps.reset-permissions: true
dom.max_script_run_time: 0
dom.mozApps.used: true
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media.gmp-manager.lastCheck: 1441735907
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print.printer_Fax.print_in_color: true
print.printer_Fax.print_margin_bottom: 0.5
print.printer_Fax.print_margin_left: 0.5
print.printer_Fax.print_margin_right: 0.5
print.printer_Fax.print_margin_top: 0.5
print.printer_Fax.print_oddpages: true
print.printer_Fax.print_orientation: 0
print.printer_Fax.print_page_delay: 50
print.printer_Fax.print_paper_data: 1
print.printer_Fax.print_paper_height: 11.00
print.printer_Fax.print_paper_name:
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print.printer_Fax.print_paper_size_unit: 0
print.printer_Fax.print_paper_width: 8.50
print.printer_Fax.print_plex_name:
print.printer_Fax.print_resolution: 1515870810
print.printer_Fax.print_resolution_name:
print.printer_Fax.print_reversed: false
print.printer_Fax.print_scaling: 1.00
print.printer_Fax.print_shrink_to_fit: true
print.printer_Fax.print_to_file: false
print.printer_Fax.print_unwriteable_margin_bottom: 0
print.printer_Fax.print_unwriteable_margin_left: 0
print.printer_Fax.print_unwriteable_margin_right: 0
print.printer_Fax.print_unwriteable_margin_top: 0
print.printer_HP_LaserJet_200_color_MFP_M276.print_bgcolor: false
print.printer_HP_LaserJet_200_color_MFP_M276.print_bgimages: false
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print.printer_HP_LaserJet_200_color_MFP_M276.print_duplex: 1515870810
print.printer_HP_LaserJet_200_color_MFP_M276.print_edge_bottom: 0
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print.printer_HP_LaserJet_200_color_MFP_M276.print_scaling: 1.00
print.printer_HP_LaserJet_200_color_MFP_M276.print_shrink_to_fit: true
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privacy.cpd.cookies: false
privacy.cpd.downloads: false
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Important Locked Preferences
----------------------------

JavaScript
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Incremental GC: true

Accessibility
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Activated: false
Prevent Accessibility: 0

Library Versions
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NSPR
Expected minimum version: 4.10.8
Version in use: 4.10.8

NSS
Expected minimum version: 3.19.2 Basic ECC
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NSSSMIME
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Expected minimum version: 3.19.2 Basic ECC
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NSSUTIL
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Experimental Features
---------------------

Comment 10

[Nicholas Nethercote [inactive]]

Thank you for the data. Three enabled add-ons isn't high. Typically if a user has memory problems and, say, 10 or more add-ons enabled then it's usually one or more of the add-ons at fault.

It's still possible that one of them could be causing problems, though probably not AdBlock Plus because it's well tested. You could try selectively disabling them. I'd start with the Web Developer one to see if that helps.

I know that's not a lot to go on. Sorry.

Comment 11

[Nicholas Nethercote [inactive]]

I'm going to remove the MemShrink tag because my investigation didn't yield anything useful. I'll leave the bug open for lag issues and I've changed the title accordingly.

It might be useful to follow the steps in https://developer.mozilla.org/en-US/docs/Mozilla/Performance/Reporting_a_Performance_Problem to try to work out the cause of the lag.