{"id":2148,"date":"2015-04-14T23:00:03","date_gmt":"2015-04-15T03:00:03","guid":{"rendered":"https:\/\/blog.mozilla.org\/meeting-notes\/?p=2148"},"modified":"2015-04-14T23:00:03","modified_gmt":"2015-04-15T03:00:03","slug":"mozilla-platform-2015-04-14","status":"publish","type":"post","link":"https:\/\/blog.mozilla.org\/meeting-notes\/archives\/2148","title":{"rendered":"Mozilla Platform: 2015-04-14"},"content":{"rendered":"<div>\n<div class=\"mw-content-ltr\" dir=\"ltr\" id=\"mw-content-text\" lang=\"en\">\n<h2 class=\"mw-headline\" id=\"Need_To_Know\">Need To Know<\/h2>\n<p><small>(Release and system issues that may impact engineering this week.)<\/small>\n<\/p>\n<h3 class=\"mw-headline\" id=\"Notices.2FSchedule_.28lsblakk.2Fsylvestre.2Flmandel.29\">Notices\/Schedule (lsblakk\/sylvestre\/lmandel)<\/h3>\n<table cellpadding=\"10\" class=\"wikitable\" style=\"color: green;background-color: #ffffcc\">\n<tr>\n<td colspan=\"2\"><big>Next Merge:<\/big> <b>May 11, 2015<\/b>\n<\/td>\n<td colspan=\"2\"><big>Next Release:<\/big> <b>May 12, 2015<\/b><br \/>\n<\/tr>\n<tr>\n<th colspan=\"4\" style=\"color: black\">Trains<br \/>\n<\/tr>\n<tr>\n<td>Central: 40\n<\/td>\n<td>Aurora: 39\n<\/td>\n<td>Beta: 38\n<\/td>\n<td>Release: 37<br \/>\n<\/tr>\n<\/table>\n<ul>\n<li> We shipped a Firefox 37.0.1 desktop and mobile chemspills last week.\n<\/li>\n<li> Firefox 38 Beta 1 shipped last week.\n<\/li>\n<li> Updates have been re-enabled for Aurora.\n<\/li>\n<li> 5 weeks until the next merge date (2015-05-11).\n<\/li>\n<\/ul>\n<h3 class=\"mw-headline\" id=\"Upcoming_Outages.2FUpgrades\">Upcoming Outages\/Upgrades<\/h3>\n<p><small>(System outages\/upgrades and tree closures that impact engineering.)<\/small><\/p>\n<p>Tree Closing Window on Saturday April 18, time TBD.\n<\/p>\n<ul>\n<li> tracking <a class=\"external text\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1151645\" rel=\"nofollow\">bug 1151645<\/a>\n<\/li>\n<li> at least 4-5 hours of work.\n<\/li>\n<\/ul>\n<h3 class=\"mw-headline\" id=\"MemShrink_.28njn.29\">MemShrink (njn)<\/h3>\n<p>Brian Hackett took advantage of the removal of object parents to reduce the size of base shapes (<a class=\"external text\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1143256\" rel=\"nofollow\">bug 1143256<\/a>).  The JS engine creates many of these to track the characteristics of JS objects.<\/p>\n<p>Nick Fitzgerald greatly reduced the amount of memory used for saving JS exception stacks (<a class=\"external text\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1038238\" rel=\"nofollow\">bug 1038238<\/a>).  This reduced the memory of a test case compiled from Dart to JS from over 1GB to around 170MB (<a class=\"external text\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1125259\" rel=\"nofollow\">bug 1125259<\/a>). Blog post: <a class=\"external free\" href=\"http:\/\/fitzgeraldnick.com\/weblog\/61\/\" rel=\"nofollow\">http:\/\/fitzgeraldnick.com\/weblog\/61\/<\/a><\/p>\n<p>Seth Fowler fixed a bad leak regression (<a class=\"external text\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1150127\" rel=\"nofollow\">bug 1150127<\/a>) where closing a page while it was in the process of loading could leak the page and cause long browser pauses. Seth also fixed a pair of issues that caused very large memory usage (more than 1GB) when scrolling in the downloads list (<a class=\"external text\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1148682\" rel=\"nofollow\">bug 1148682<\/a> and <a class=\"external text\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1148684\" rel=\"nofollow\">bug 1148684<\/a>).<\/p>\n<p>Bill McCloskey fixed an issue where a docshell was being held alive for too long on e10s (<a class=\"external text\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1137933\" rel=\"nofollow\">bug 1137933<\/a>). This was one of the remaining blockers to enabling e10s Mochitest browser-chrome tests, which will give us more test coverage for leaks.\n<\/p>\n<h3 class=\"mw-headline\" id=\"Media\">Media<\/h3>\n<p>We shipped MSE (Media Source Extensions) for YouTube in Firefox 37 on Windows Vista+. Unfortunately, we discovered multiple unrelated issues in the release channel that all manifest themselves as &#8220;video is black&#8221;:<\/p>\n<p><a class=\"external text\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1151721\" rel=\"nofollow\">bug 1151721<\/a>: Intel GPU driver bug (will be hotfixed by <a class=\"external text\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1152630\" rel=\"nofollow\">bug 1152630<\/a>)<br \/>\n<a class=\"external text\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1151638\" rel=\"nofollow\">bug 1151638<\/a>: NoScript blocking MSE JS (will be fixed soon in NoScript 2.6.9.21)<br \/>\n<a class=\"external text\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1135078\" rel=\"nofollow\">bug 1135078<\/a>: IPv6 problems (partially fixed <a class=\"external text\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1135078\" rel=\"nofollow\">bug 1135078<\/a>)<\/p>\n<p>YouTube helped us quickly revert all Firefox users from HTML5 video to Flash. Once the problems were identified, YouTube was able to switch OS X and Windows Vista+ pre-channels back to HTML5 video. We plan to ship MSE for YouTube on Windows Vista+ in Firefox 38 (or 37 if hotfix <a class=\"external text\" href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1152630\" rel=\"nofollow\">bug 1152630<\/a> is released soon) and on OS X in Firefox 38 (or possibly slip to 39).\n<\/p>\n<\/div>\n<div class=\"printfooter\">\n\t\t\t\tRetrieved from &#8220;<a href=\"https:\/\/wiki.mozilla.org\/index.php?title=Platform\/2015-04-14&amp;oldid=1067647\">https:\/\/wiki.mozilla.org\/index.php?title=Platform\/2015-04-14&amp;oldid=1067647<\/a>&#8221;\t\t\t\t<\/div>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Need To Know (Release and system issues that may impact engineering this week.) Notices\/Schedule (lsblakk\/sylvestre\/lmandel) Next Merge: May 11, 2015 Next Release: May 12, 2015 Trains Central: 40 Aurora: 39 Beta: 38 Release: 37 We shipped a Firefox 37.0.1 desktop and mobile chemspills last week. Firefox 38 Beta 1 shipped last week. Updates have been [&hellip;]<\/p>\n","protected":false},"author":195,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[209],"tags":[258],"_links":{"self":[{"href":"https:\/\/blog.mozilla.org\/meeting-notes\/wp-json\/wp\/v2\/posts\/2148"}],"collection":[{"href":"https:\/\/blog.mozilla.org\/meeting-notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.mozilla.org\/meeting-notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.mozilla.org\/meeting-notes\/wp-json\/wp\/v2\/users\/195"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.mozilla.org\/meeting-notes\/wp-json\/wp\/v2\/comments?post=2148"}],"version-history":[{"count":0,"href":"https:\/\/blog.mozilla.org\/meeting-notes\/wp-json\/wp\/v2\/posts\/2148\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.mozilla.org\/meeting-notes\/wp-json\/wp\/v2\/media?parent=2148"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.mozilla.org\/meeting-notes\/wp-json\/wp\/v2\/categories?post=2148"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.mozilla.org\/meeting-notes\/wp-json\/wp\/v2\/tags?post=2148"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}