Electrolysis/Release Criteria/UI Smoothness: Difference between revisions

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→‎talos CART (customization mode animation test): CART stuff

Mconley

Confirmed users, Bureaucrats and Sysops emeriti

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 * e10s comparison validated: mconley
-* Current e10s diff: worse by 8-12% on all platforms
+* '''signed off by barbara over email on April 20th, 2016'''
-* {{bug|1251699}} - Investigate e10s TART regression on osx and windows
+* Current e10s diff: '''No worse than non-e10s with APZ disabled''' (see [https://bugzilla.mozilla.org/show_bug.cgi?id=1251699#c5 this analysis])
+* {{bug|1251699}} - 5.7% TART regression on OS X with APZ disabled
+** Closed as WORKSFORME - this regression seems to have disappeared.
+* {{bug|1253412}} - APZ causes 4% - 12% TART regression - Event Region Regression
+** This has been WONTFIX'd by the APZ team. See [https://bugzilla.mozilla.org/show_bug.cgi?id=1253412#c10 this comment] and [https://bugzilla.mozilla.org/show_bug.cgi?id=1253412#c19 this comment].
-== talos tpaint (first paint for a new window) ==
+== talos tpaint (first paint of a new window opened from content) ==
 * e10s comparison validated: jimm
-* Current e10s diff: worse by 30-40% on all platforms
+* Current e10s diff: '''worse by 3-8% on Linux 64, Windows 7 and Windows 8 platforms, with APZ on or off. 11% improvement on OS X'''
-* {{bug|1174770}} - tpaint regressions (3%-33%) in e10s mode compared to non-e10s mode
+* {{bug|1174770}} - tpaint regressions (3%-8%) in e10s mode compared to non-e10s mode
+=== Notes ===
+* tpaint measures the time it takes to paint the content for a new window that has been '''opened from content'''. Windows can be opened from content in a few ways:
+** The content runs some JavaScript that calls window.open with non-default features, like window.open("https://www.mozilla.org", "_blank", "toolbars=no");
+** The user has flipped the browser.link.open_newwindow pref from its default to open new windows instead of new tabs, and then clicks on a target="_blank" anchor
+* tpaint '''does not''' measure the time it takes to open a window triggered from the parent. Windows can be opened from the parent in a number of ways:
+** The user uses Ctrl-N or File > New Window to open a new window
+** The user clicks on a link in another application that opens the browser the first time
+** The user right clicks on a link in content, and chooses to Open Link in New Window
+** The user tears a tab out into a new window
+* An experiment was conducted to determine whether or not e10s regresses opening windows from the parent.
+** The experiment was conducted in {{bug|1251732}}
+** '''The conclusion was that e10s does not regress this case.'''
+* We suspect there is a second slow-path here that Talos is not measuring, and that's when the user clicks on a link that opens a new tab.
+** A bug has been filed to add such a test ({{bug|1253382}})
+** Preliminary local results from that test show that '''e10s does not seem to regress this case'''
+* A bug has been filed to get Telemetry on how often we hit the ContentParent::RecvCreateWindow codepath, which we believe is the slow path. ({{bug|1253388}})
 == talos tresize (window resize responsiveness) ==
@@ Line 27: / Line 48: @@
 * e10s comparison validated: jimm
 * Current e10s diff: mixed
-** Windows 8 64: better by 12%
+** Linux 64: ~7% regression
-** Windows 7/XP: worse by 7-12%
+** OS X: ~2% regression
-** OS X: worse by 3%
+** Windows 7: ~2% regression
-** Linux: worse by 1%
+** Windows 8 64: ~17% improvement
+** Windows XP: ~9% regression
+* [https://bugzilla.mozilla.org/show_bug.cgi?id=1252947#c23 Signed off by canuckistani here.]
 * {{bug|1179732}} - 11-147% linux*/winxp tresize regression when comparing e10s to non e10s on the same build
+* {{bug|1252947}} - ~5% winxp tresize regression when comparing e10s to non e10s on the same build
 == talos tps (tab-switch speed) ==
 * e10s comparison validated: jimm
-* Current e10s diff: worse by 40-100% on all platforms
+* Current e10s diff:
-* {{bug|1186585}} - 28.2% to 48.5% tps talos regression with e10s enabled
+** '''Linux 64: 19.38% improvement'''
+** '''OS X:  35.59% improvement'''
+** '''Win 7:  26.61% improvement'''
+** '''Win 8:  33.78% improvement'''
+** '''Win XP:  26.26% improvement'''
+== talos CART (customization mode animation test) ==
+* e10s comparison validated: mconley
+* Current e10s diff (with APZ disabled - see [https://bugzilla.mozilla.org/show_bug.cgi?id=1252768#c4 this analysis])
+** Win 8:  2.0% worse
+** Win 7:  4.0% worse
+** OS X:  3.7% worse
+** '''Linux 64:  6.8% worse'''
+* {{bug|1252768}} - 2–7% e10s CART regression
+** The regressions on non-Linux platforms is due to the "New non-e10s window" button that is added to Nightly and Aurora builds
+** The regression for Linux 64 is not yet understood.
 = Bugs =