Discussion about official Mozilla Firefox builds
Josa
Posts: 4212Joined: July 28th, 2009, 4:52 pm
Posted November 7th, 2017, 12:46 pm
Previous Nightly Builds thread 20171107The first official 20171108 NIGHTLY builds are out.The Official Firefox 57 RC2 builds are not yet outPrevious NIGHTLY: 20171107 (Fx 58.0a1) Previous BETA: 20171107 (Fx 57.0 RC1) Mozilla Inbound BuildsTreeherderRelease Notes: NIGHTLY | BETA Changelogs: NIGHTLY | BETAFixed:
NIGHTLY +69
- #1402014
- #1405599
- #1410106
- #1411631
- #1414692
- #1414279
- #1414762
- #1393045 [Core:Audio/Video: Playback]-Add support for AudioSampleEntry with a version 2 (QT Extension) [Uns][]
- #1395922 [Core:Audio/Video: Playback]-Handle HTMLMediaElement::SetMediaKeys asynchronously. [Uns][]
- #1412737 [Core:Audio/Video: Playback]-MediaCacheStream::Read() should read enough bytes until EOS or error is encounted [Uns][]
- #1413076 [Core:Audio/Video: Playback]-Return other error in H264Converter [Uns][]
- #1412180 [Core:Audio/Video: Playback]-[webvtt] implement region id on VTTRegion. [Uns][]
- #1412558 [Core:Audio/Video: Playback]-media.ffvpx.enabled=true (vp9) is too slow on 32bit Unix [Lin][]
- #1415086 [Core:DOM: Workers]-AddressSanitizer: stack-use-after-scope /builds/slave/moz-toolchain/src/llvm/projects/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:302:5 in __interceptor_strlen [Uns][]
- #1413253 [Core:DOM]-Assertion failure: !mMightHaveUnreportedJSException, at /builds/worker/workspace/build/src/obj-firefox/dist/include/mozilla/ErrorResult.h:486 [Uns][]
- #1415389 [Core:DOM]-Make ChromeUtils a namespace [Uns][]
- #1415182 [Core:DOM]-The External interface should be [NoInterfaceObject] [Uns][]
- #1414713 [Core:Editor]-Get rid of EditorUtils::IsDescendantOf() which returns offset [All][]
- #1414581 [Core:Editor]-crash near null [@ IsList] [Uns][]
- #1414271 [Core:Graphics: WebRender]-Update webrender to da493fad52ad28da5aa062fa18100c0fd4f30b24 [Uns][[wr-mvp] [gfx-noted]]
- #1411627 [Core:Graphics: WebRender]-WR API for position:sticky needs to support painting at nonzero scroll offsets [Uns][[wr-mvp] [gfx-noted]]
- #1414714 [Core:Graphics]-Remove some unused gfx prefs [Uns][[gfx-noted]]
- #1414631 [Core:IPC]-chromium: Remove the Chromium Process class [Uns][]
- #1415085 [Core:ImageLib]-AddressSanitizer: stack-use-after-scope /builds/worker/workspace/build/src/image/SurfaceCache.cpp:228:37 in AreaOfIntSize [Uns][[gfx-noted]]
- #1415161 [Core:JavaScript Engine]-JSContext::findVersion slows down CheckPatternSyntax [All][]
- #1339895 [Core:JavaScript Engine]-Javascript statement var x += 2 yields misleading error [Uns][]
- #1244280 [Core:JavaScript Engine]-Linux javascript call stack greatly limited when using baseline jit [Lin][]
- #1414546 [Core:JavaScript Engine]-No longer treat "yield" as keyword in js>=1.7 [Uns][]
- #1415124 [Core:JavaScript Engine]-Nursery allocate cloned lexical environments [All][]
- #1412110 [Core:Layout: Web Painting]-Assertion failure: !item->GetAbove(), at /builds/worker/workspace/build/src/layout/generic/nsFrame.cpp:3151 [Uns][]
- #1413833 [Core:Layout: Web Painting]-Poor performance on searchfox with retained-dl [Uns][]
- #1414397 [Core:Layout: Web Painting]-Retained layers cause Confluence table cell content to flicker or vanish [Uns][]
- #1411765 [Core:Layout]-Fix reflow status when size is exactly the available size and undo comment changes [Uns][]
- #1415152 [Core:Layout]-GetInsertionPrevSibling doesn't need to call AdjustAppendForAfter, since ::after is handled in FindNextSibling. [Uns][]
- #1409570 [Core:Networking: HTTP]-Regression: Loading site using HTTP2 server push hangs page while loading resources [Uns][[necko-triaged]]
- #1414188 [Core:Preferences: Backend]-Remove ValueObserver [Uns][]
- #1414096 [Core:Preferences: Backend]-Remove support for nsISupportsString values in nsPrefBranch::{get,set}ComplexValue() [All][]
- #1410546 [Core:Security: PSM]-Disable EV treatment for "Security Communication EV RootCA1" root certificate [Uns][[psm-assigned]]
- #1415250 [Core:Security: Process Sandboxing]-Let level 4 for the Windows content sandbox ride again. [Win][sb+]
- #1409622 [Core:Web Audio]-Test failures on OSX when building with clang 5 [Uns][]
- #1415249 [Core:WebRTC: Networking]-Remove unused variables introduced during EUI 64 (MAC-based) IPv6 candidate gathering [Uns][]
- #1414272 [Core:Widget: Gtk]-Implement SetNonClientMargins() for Gtk+ [Uns][]
- #1414150 [Core:XPCOM]-Remove some unnecessary prefs in and around XPCOM [Uns][]
- #1414292 [Core:XPConnect]-Update to current spec for cross-origin object property enumerability [Uns][]
- #1413692 [Firefox:Address Bar]-Extensions page actions are pinned to address bar again and again [Uns][[fxsearch]]
- #1413843 [Firefox:Bookmarks & History]-Cut/Copy/Move operations involving the left pane of the library are typically very slow due to non-batching [Uns][[fxsearch]]
- #1415137 [Firefox:Developer Tools: Console]-Group's vertical line is moved one pixel [Uns][]
- #1408790 [Firefox:Developer Tools: Inspector]-The non-selected elements with ids should be lightened to the same color as the non-selected classes [Uns][]
- #1400963 [Firefox:Developer Tools: JSON Viewer]-scrolling out in json viewer [Uns][]
- #1414609 [Firefox:Developer Tools: Netmonitor]-Filter autocomplete popup is hidden behind the floating status header [Uns][]
- #1413540 [Firefox:Developer Tools: Netmonitor]-Merge 'flash' filter into 'others' [Uns][]
- #1413832 [Firefox:Developer Tools]-Keep the green/active toolbar icon styling when the tool is selected [Uns][]
- #1408334 [Firefox:Developer Tools]-[dt-onboarding] Add form to subscribe to devtools newsletter [Uns][]
- #1414965 [Firefox:Search]-Reset search geo preferences due to bug 1413652 [Uns][]
- #1339329 [Firefox:Security]-Incorrect messaging and user instructions for expired SSL/TLS certificates [Uns][]
- #1415012 [Firefox:Sync]-Sync should not trigger immediate resync if some engines failed during the sync. [Uns][]
- #1414222 [Firefox:Theme]-Configure titlebar rendering on Linux/Gtk+ [Uns][]
- #1411309 [Firefox:Theme]-Drag space in title bar does not collapse margins [Uns][[reserve-photon-visual]]
- #1299286 [Firefox:Toolbars and Customization]-In touch enabled laptop drag and drop by finger is not working on toolbar and customization window [Win][[reserve-photon-visual][p4][high-priority]]
- #1415017 [Toolkit:Add-ons Manager]-Remove AddonRepository sqlite migration code [Uns][]
- #1415103 [Toolkit:Crash Reporting]-Remove dead code in crash reporting [Uns][]
- #1402963 [Toolkit:Form Manager]-Credit cards need deduplication [Uns][[form autofill:MVP]]
- #1410907 [Toolkit:Telemetry]-Add canRecordReleaseData/canRecordPrereleaseData to nsITelemetry [All][]
- #1409323 [Toolkit:Telemetry]-Allow to register new addon scalars for an existing category [All][]
- #1410143 [Toolkit:Telemetry]-It is difficult to determine which crash pings are from ShutDownKill [Uns][]
- #464450 [Toolkit:Themes]-remove "padded" class from type="autocomplete" textboxes without icons [All][]
- #1414512 [Toolkit:WebExtensions: Frontend]-browser.theme.getCurrent() always returns an empty theme object if theme doesn't originate from the extension [Uns][]
- #1414997 [Toolkit:WebExtensions: General]-ExtensionStorageSync might initialize Kinto multiple times [Uns][]
- #1291399 [Toolkit:WebExtensions: General]-Move uses of getExtensionUUID to UUIDMap [Uns][triaged]
Partial Landings/Diagnostic Patches:
- #1415397 [Core:Audio/Video: Playback]-Use Span<> to replace low level pointer arithmetic in MediaCacheStream::ReadFromCache() [Uns][]
- #1412545 [Core:Graphics: WebRender]-regression: blob-images: libfreetype crashes (broken webrender_bindings) [Lin][[wr-reserve]]
RC1 -> RC2 Changelog +0 None
Nightly 58 fixes since 20170921 (Gecko 57) ~2483Beta 57 fixes since 20170802 (Gecko 56) ~3574Nightly BlogRelease CalendarRelease TrackingMozRegression Guide
Last edited by Josa on November 8th, 2017, 3:40 pm, edited 1 time in total.
Omega X

Posts: 8134Joined: October 18th, 2007, 2:38 pmLocation: A Parallel Dimension...
Posted November 7th, 2017, 2:32 pm
The VP9 patches are in and performance is better than ever now.
Latest: Firefox/71.0 *ESR/68.3.0 - Mobile/71.0 - Thunderbird/68.3.0 Nightly: Nightly/73.0a1 - Mobile/73.0a1 - Daily/73.0a1
gorhill
Posts: 158Joined: February 10th, 2015, 8:00 am
Posted November 8th, 2017, 8:22 am
I am having bout of relatively high CPU usage (~20% on quad-core) with 58.0a1 (2017-11-08) (64-bit) (linux version). This is intermittent, and unpredictable (might be happening when I open a new web page, need more data to make the case), and last for a few seconds (10s-20s very roughly estimated).
I looked into this using Gecko profiler, but it shows nothing -- all processes just show they are waiting at poll(), which is normal when the browser is idle (my understanding). The OS System Monitor shows that this is happening in the main process.
This observation is new to me -- not something I observed in previous builds. So anyway, just throwing this out there in case someone else experiences this. I became aware of this through the CPU fan noise.
Edds

Posts: 327Joined: July 21st, 2010, 1:13 pmLocation: SVK
Posted November 8th, 2017, 8:51 am
Hmm, maybe something is happening. For a past few builds I noticed from time to time more sluggishness e.g. loading content icon for a moment when switching from one tab to another... obviously it should be instant except some edge cases with very heavy load on tabs. I thought there was something on the background which is consuming CPU, but I'm not sure now.
Core i7 8700K @ 4.8 Ghz + Noctua NH-D15 | 16GB DDR4 3200Mhz Corsair | MSI Z370 GAMING PRO CARBON | MSI GTX 1080 GAMING X @ 2.1/11.0Ghz Toshiba DT 2TB | Samsung 850 EVO 500GB | Super Flower 650W GOLD 90+ | W10 x64 Pro v1709 | Fractal Define R4 Black | DELL U2515H 1440p Phone: LG G4 Android 6.0
shellye5
Posts: 47Joined: May 23rd, 2017, 9:57 am
Posted November 8th, 2017, 8:51 am
gorhill wrote:I am having bout of relatively high CPU usage (~20% on quad-core) with 58.0a1 (2017-11-08) (64-bit) (linux version). This is intermittent, and unpredictable (might be happening when I open a new web page, need more data to make the case), and last for a few seconds (10s-20s very roughly estimated).
I looked into this using Gecko profiler, but it shows nothing -- all processes just show they are waiting at poll(), which is normal when the browser is idle (my understanding). The OS System Monitor shows that this is happening in the main process.
This observation is new to me -- not something I observed in previous builds. So anyway, just throwing this out there in case someone else experiences this. I became aware of this through the CPU fan noise.
Bug 1406414 by the looks of what you are describing but not certain 
tauio111
Posts: 18Joined: August 12th, 2017, 8:52 am
Posted November 8th, 2017, 8:52 am
gorhill wrote:I am having bout of relatively high CPU usage (~20% on quad-core) with 58.0a1 (2017-11-08) (64-bit) (linux version). This is intermittent, and unpredictable (might be happening when I open a new web page, need more data to make the case), and last for a few seconds (10s-20s very roughly estimated).
I looked into this using Gecko profiler, but it shows nothing -- all processes just show they are waiting at poll(), which is normal when the browser is idle (my understanding). The OS System Monitor shows that this is happening in the main process.
This observation is new to me -- not something I observed in previous builds. So anyway, just throwing this out there in case someone else experiences this. I became aware of this through the CPU fan noise.
I see Nigtly using 10% on my Ryzen 5 1600 while doing absolutely nothing. Something is broken
shellye5
Posts: 47Joined: May 23rd, 2017, 9:57 am
Posted November 8th, 2017, 9:31 am
tauio111 wrote:gorhill wrote:I am having bout of relatively high CPU usage (~20% on quad-core) with 58.0a1 (2017-11-08) (64-bit) (linux version). This is intermittent, and unpredictable (might be happening when I open a new web page, need more data to make the case), and last for a few seconds (10s-20s very roughly estimated).
I looked into this using Gecko profiler, but it shows nothing -- all processes just show they are waiting at poll(), which is normal when the browser is idle (my understanding). The OS System Monitor shows that this is happening in the main process.
This observation is new to me -- not something I observed in previous builds. So anyway, just throwing this out there in case someone else experiences this. I became aware of this through the CPU fan noise.
I see Nigtly using 10% on my Ryzen 5 1600 while doing absolutely nothing. Something is broken
Same but 25% ](./images/smilies/eusa_wall.gif)
Mark12547

Posts: 294Joined: May 13th, 2017, 11:36 amLocation: Oregon, United States, Earth
Posted November 8th, 2017, 9:44 am
Yes, starting last night, after last night's upgrade, I noticed about 3 to 5 seconds of 25% CPU usage while Firefox is idle. (25% corresponds to a core of this 4-core CPU. I can notice this because 25% heats the CPU enough to kick on the CPU fan.) It has nothing to do with a throbber because no throbber is running, so it isn't Bug 1406414. The problem persists after this morning's update. This time, though, it hit about 40% while watching a YouTube video, whereas just watching the video is about 15% CPU. Last night these were also installed through Windows Update: - KB2952664 Update for Windows 7 for x64-based Systems
- KB4041686 2017-10 Preview Monthly Quality Rollup for Windows 7 for x64-based Systems
- KB4042076 2017-10 Preview of Quality Rollup for .NET Framework 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7 on Windows 7 and Server 2008 R2 for x64
- KB4011188 Update for Microsoft Office 2010 32-Bit Edition
Extensions installed and enabled: - uBlock Origin
- Country Flag +
- Hostname in title
- IPvFoo
- Simple Translate
- small-clock
- Tab Center Redux
- Violentmonkey -> AAK-Cont Userscript For uBlock Origin
My system is: - Windows 7 Home Premium SP1 (64-bit)
- 4 core CPU: AMD A6-3620 APU with Radeon(tm) HD Graphics 2.20 GHz
- gpu: AMD Radeon HD 6530D (as reported by CPU-Z)
- 8 GB RAM (7.49 GB usable)
- Antivirus: Norton Security Suite (but with "community watch" turned off; it interferes with Nightly updates). I started using it 8 months ago when Avast Internet Security kept on dropping too many packets for distant websites. (Yes, I know antivirus provided by one's ISP generally has poor reputation, but it proved less troublesome than Avast Internet Security.)
Do we have any commonalities for these CPU spikes? Do we have things we can rule out? - Operating system - this thread already lists Windows 10, Windows 7 and linux.
- Processors - i7 and AMD are both mentioned
shellye5
Posts: 47Joined: May 23rd, 2017, 9:57 am
Posted November 8th, 2017, 10:30 am
Mark12547 wrote:Yes, starting last night, after last night's upgrade, I noticed about 3 to 5 seconds of 25% CPU usage while Firefox is idle. (25% corresponds to a core of this 4-core CPU. I can notice this because 25% heats the CPU enough to kick on the CPU fan.) It has nothing to do with a throbber because no throbber is running, so it isn't Bug 1406414. The problem persists after this morning's update. This time, though, it hit about 40% while watching a YouTube video, whereas just watching the video is about 15% CPU. Last night these were also installed through Windows Update: - KB2952664 Update for Windows 7 for x64-based Systems
- KB4041686 2017-10 Preview Monthly Quality Rollup for Windows 7 for x64-based Systems
- KB4042076 2017-10 Preview of Quality Rollup for .NET Framework 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7 on Windows 7 and Server 2008 R2 for x64
- KB4011188 Update for Microsoft Office 2010 32-Bit Edition
Extensions installed and enabled: - uBlock Origin
- Country Flag +
- Hostname in title
- IPvFoo
- Simple Translate
- small-clock
- Tab Center Redux
- Violentmonkey -> AAK-Cont Userscript For uBlock Origin
My system is: - Windows 7 Home Premium SP1 (64-bit)
- 4 core CPU: AMD A6-3620 APU with Radeon(tm) HD Graphics 2.20 GHz
- gpu: AMD Radeon HD 6530D (as reported by CPU-Z)
- 8 GB RAM (7.49 GB usable)
- Antivirus: Norton Security Suite (but with "community watch" turned off; it interferes with Nightly updates). I started using it 8 months ago when Avast Internet Security kept on dropping too many packets for distant websites. (Yes, I know antivirus provided by one's ISP generally has poor reputation, but it proved less troublesome than Avast Internet Security.)
Do we have any commonalities for these CPU spikes? Do we have things we can rule out? - Operating system - this thread already lists Windows 10, Windows 7 and linux.
- Processors - i7 and AMD are both mentioned
The throbber one kicks in while page loading like in the first report, not sure what causes the idle CPU spike, 
Mark12547

Posts: 294Joined: May 13th, 2017, 11:36 amLocation: Oregon, United States, Earth
Posted November 8th, 2017, 11:04 am
In my case, no throbbers were involved. First two times I was reading pages that had already loaded and no throbber. This morning I was in the middle of reading a page while another tab in another window was playing a YouTube video and no throbbers were active.
Also, the throbber consuming too much CPU has been reported on really slow machines, with a lot more discussion on the original throbber Bug, where one of the developers had to go out and purchase a laptop as similar as possible as the Reporter of the original throbber Bug so the problem could be reproduced on a slow machine. Discussions on the original throbber Bug got so long that they decided to spawn a new throbber Bug without the hundreds of comments.
I'm going to ask on the Firefox subreddit to see if others have observed the CPU spikes since last night's Nightly update and if we can discover any commonalities.
Lurtz
Posts: 358Joined: June 12th, 2016, 12:25 pm
Posted November 8th, 2017, 2:09 pm
WebRender MVP was just delayed to Firefox 60. Not surprising, still a bit sad.
streetwolf

Posts: 2432Joined: August 21st, 2011, 8:07 amLocation: NJ (USA)
Posted November 8th, 2017, 3:10 pm
Lurtz wrote:WebRender MVP was just delayed to Firefox 60. Not surprising, still a bit sad.
Please provide a link to the source of this information.
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Josa
Posts: 4212Joined: July 28th, 2009, 4:52 pm
Posted November 8th, 2017, 3:41 pm
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