Firefox/Performance

< Firefox
Revision as of 17:18, 9 February 2018 by Mconley (talk | contribs) (Add operating principals)

Firefox Desktop Perceived Performance Team

The purpose of this team is to improve the perceived performance of Firefox. Our focus is mostly on front-end code that impacts the perceived performance of the browser itself, not the performance of rendering web pages. There are other teams focused on the latter.

Members

  • Mike Conley (:mconley)
  • Florian Queze (:florian)
  • Paolo Amadini (:paolo)
  • Gijs Kruitbosch (:Gijs)
  • Philipp Sackl (:phlsa)
  • Panos Astithas (:past)

Operating principals

Text goes here

Contact

Team Meeting

Day of week Pacific Time Eastern Time UTC Central European Time
Fridays 8:30AM - 9:00AM 11:30AM - 12:00PM 4:30PM - 5:00PM 5:30PM - 6:00PM
  • Frequency: One meeting per week on Friday.
  • Duration: 30 min
  • Vidyo Room: Firefox
  • Meeting notes: Google Doc
  • IRC: #fx-team
  • Mailing list: firefox-dev

Bugzilla

Bugzilla components don't tend to align properly with this project's boundaries, so this team is monitoring bugs across a number of components that block the photon-performance meta bug. Here is the dependency tree. Common components of interest are Firefox:General, Firefox:Tabbed Browser, Toolkit:General and more.

Selecting a New Bug for the Current Release

  1. Select any 'P1' bug which is currently unassigned and not blocked on a dependency. If no 'P1' bugs are available then select from the available 'P2' bugs, and so on.
  2. Add the following if not already present:
  • [fxperf] whiteboard tag.
  • perf keyword.
  • qe-verify-, unless it is a bug that QA can reasonably verify.

Adding a New Bug to the Backlog

  1. Add the [fxperf] tag to the whiteboard.
  2. Add the perf keyword.
  3. Set the bug as a dependency of a user story bug or a meta bug if applicable.
  4. Set the bug priority per the following guidelines or call it out for a priority decision in the Weekly Meeting:
  • 'P1': Must Have - development occurring in the current release.
  • 'P2': Should Have - targeted for next release.
  • 'P3': Could Have - planned for development in an upcoming release.
  • 'P5': Will Have - not scheduled for any particular release, patches accepted.

Submitting a Bug for Triage

  1. Mark the bug as blocking the photon-performance-triage meta bug or add the [fxperf] tag to the whiteboard.
  2. Leave the priority field empty (--).

Triage

Collection of work waiting for the team to review and determine if it should be included in the Product Backlog

Bugs blocking photon-performance-triage - View in Bugzilla

Full Query
ID Summary Status Whiteboard Keywords Assigned to
691507 [meta] Periodic hangs in the UI due to Places NEW meta, perf
887887 [meta] Use Sqlite.jsm in Form History NEW [fxperf] main-thread-io, meta, perf
1320534 [meta] Speed and performance of importing bookmarks from JSON or HTML files is awful NEW [fxsearch:p5] hang, meta, nightly-community, perf:frontend
1352518 Avoid calling getComputedStyle() in isElementVisible() in UITour.jsm NEW [API used a few times/year][fxperf:p5] perf
1354562 Consider moving some <style> elements to separate sheets NEW [fxperf:p5]
1355956 [meta] Photon - Make Firefox start more quickly NEW [photon-performance] meta
1355978 show tab favicons immediately UNCONFIRMED [fxperf:p5] blocked-ux, perf
1358390 1.24ms uninterruptible reflow at useLandscapeMode@chrome://devtools/content/inspector/inspector.js:460:27 NEW [ohnoreflow] perf, perf:frontend, perf:responsiveness
1358730 2.41ms uninterruptible reflow at stop@chrome://global/content/bindings/browser.xml:99:13 NEW [ohnoreflow][fxperf:p5] perf
1358810 0.91ms uninterruptible reflow at create@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/client/framework/toolbox-hosts.js:86:5 NEW [ohnoreflow][fxperf:p5] perf
1358899 Opening a link from an external application while Firefox is idle is slow NEW perf
1359408 0.29ms uninterruptible reflow at _handleDOMChange@chrome://extensions/content/ext-browser-content.js:215:24 NEW [ohnoreflow]triaged perf, perf:frontend, perf:responsiveness
1362529 0.97ms uninterruptible reflow at @chrome://browser/content/tab-content.js:85:43 NEW [ohnoreflow] perf, perf:frontend
1362533 1.0ms uninterruptible reflow at PT__onDragOver@chrome://browser/content/places/browserPlacesViews.js:1600:11 NEW [ohnoreflow][fxperf:p5][snt-scrubbed][places-performance] perf
1364290 1.89ms uninterruptible reflow at insertPlaceholder@resource://app/modules/DragPositionManager.jsm:181:7 NEW [ohnoreflow] perf, perf:frontend
1364324 0.98ms uninterruptible reflow at AreaPositionManager@resource://app/modules/DragPositionManager.jsm:24:23 NEW [ohnoreflow] perf, perf:frontend
1373694 Don't block on beforeunload events from third-party tracking domain scripts NEW perf
1387045 Suppress window animation for profile manager NEW [fxperf:p5]
1387142 Suppress window animation for New Window NEW perf:animation, perf:responsiveness
1388758 Restoring sessions with multiple windows is very slow NEW perf, perf:frontend, perf:startup
1482654 1.43ms uninterruptible reflow at onxblunderflow@chrome://browser/content/tabbrowser.xml:47:11 NEW [ohnoreflow] perf:frontend
1482669 2.25ms uninterruptible reflow at _getDragItemSize@resource:///modules/CustomizeMode.jsm:2216:16 NEW [ohnoreflow][fxperf:p5]
1482670 1.38ms uninterruptible reflow at recreatePopup@resource:///modules/UITour.jsm:1443:5 NEW [ohnoreflow] perf:frontend, perf:responsiveness
1482671 2.32ms uninterruptible reflow at showHighlightElement@resource:///modules/UITour.jsm:1046:24 NEW [ohnoreflow] perf:frontend, perf:responsiveness
1482734 2.09ms uninterruptible reflow at onxbldragover@chrome://browser/content/tabbrowser.xml:1391:9 NEW [ohnoreflow] perf:frontend, perf:responsiveness

25 Total; 25 Open (100%); 0 Resolved (0%); 0 Verified (0%);

Tracked bugs without a priority set - View in Bugzilla

Full Query
ID Summary Status Whiteboard Keywords Assigned to
1627071 [meta] Startup Task DAG Phase 1: Disk IO Orchestration NEW [fxperf] meta

1 Total; 1 Open (100%); 0 Resolved (0%); 0 Verified (0%);

Releases

Current Release

P1: Must Have - development occurring in the current release - View in Bugzilla

Duration: Tuesday January 23 - Monday March 12

No results.

0 Total; 0 Open (0%); 0 Resolved (0%); 0 Verified (0%);

Current Release: Completed

View in Bugzilla

Full Query
ID Summary Status Whiteboard Keywords Assigned to Priority
1223303 nsChromeTreeOwner::OnLocationChanged is very confused about what a docshell and a window are RESOLVED [fxperf] Florian Quèze [:florian] --
1336227 Show a blank window as soon as possible after start-up (pref'd off) RESOLVED [fxperf] Florian Quèze [:florian] P2
1425600 Stop using nsIPluginTag.filename and .name thousands of times because it's clownshoes RESOLVED [fxperf] Chris Peterson [:cpeterson] P1
1434376 Make BrowserUtils.promiseReflowed and BrowserUtils.promiseLayoutFlushed reliable RESOLVED [fxperf] Mike Conley (:mconley) (:⚙️) P1
1434945 browser.xul should look correct if it's painted after domcontentloaded RESOLVED [fxperf] Florian Quèze [:florian] P1
1436559 setOverLink loves to do busy-work RESOLVED [fxperf] :Gijs (he/him) P1

6 Total; 0 Open (0%); 6 Resolved (100%); 0 Verified (0%);

Next Release

P2: Should Have - targeted for the current release if production capacity exists - View in Bugzilla

No results.

0 Total; 0 Open (0%); 0 Resolved (0%); 0 Verified (0%);

Backlog

P3: Could Have - planned for development in an upcoming release - View in Bugzilla

Full Query
ID Summary Status Whiteboard Keywords Assigned to
1344302 [meta] Tab closing performance NEW [photon-performance] [gfx-noted] [fxperf] meta, perf Mike Conley (:mconley) (:⚙️)
1353586 [meta] _saveStateAsync shouldn't pile up on existing jank NEW [fxperf] meta, perf, stale-bug
1356825 [meta] AddonManager startup is too slow NEW , triaged [fxperf] meta, perf
1361095 [meta] Can nsContentPrefService avoid main thread IO before the first window is shown? NEW [fxperf] meta, perf
1580658 [meta] Investigate disk activity on Linux using strace NEW [fxperf] meta, perf

5 Total; 5 Open (100%); 0 Resolved (0%); 0 Verified (0%);

Patches Accepted

P5: Will Have - not scheduled for any particular release, patches accepted - View in Bugzilla

Full Query
ID Summary Status Whiteboard Keywords Assigned to
1349822 [meta] updateCurrentBrowser can be slow NEW [fxperf] meta, perf

1 Total; 1 Open (100%); 0 Resolved (0%); 0 Verified (0%);

¯\_(ツ)_/¯

P4: (should be reprioritized to P3 or P5) - View in Bugzilla

Full Query
ID Summary Status Whiteboard Keywords Assigned to
887887 [meta] Use Sqlite.jsm in Form History NEW [fxperf] main-thread-io, meta, perf

1 Total; 1 Open (100%); 0 Resolved (0%); 0 Verified (0%);