165758 2016-12-12 09:43:58 -0800 GC scheduler should avoid consecutive pauses 2016-12-13 13:53:23 -0800 1 1 1 Unclassified WebKit JavaScriptCore WebKit Nightly Build All All RESOLVED FIXED P2 Normal --- 149432 1 fpizlo fpizlo cdumez oldest_to_newest 1259075 0 fpizlo 2016-12-12 09:43:58 -0800 Patch forthcoming. 1259076 1 296927 fpizlo 2016-12-12 09:46:40 -0800 Created attachment 296927 the patch 1259094 2 296927 msaboff 2016-12-12 10:04:51 -0800 Comment on attachment 296927 the patch View in context: https://bugs.webkit.org/attachment.cgi?id=296927&action=review > Source/JavaScriptCore/ChangeLog:8 > + This factors out the scheduler from a bunch of lambdas and closed-over variables in Should this read "... from the scheduler a bunch ..."? > Source/JavaScriptCore/ChangeLog:14 > + still had time during a mutator timeslice. This greatly splay-latency. I'm still testing Fix the sentence "This greatly splay-latency." 1259096 3 296927 darin 2016-12-12 10:05:22 -0800 Comment on attachment 296927 the patch View in context: https://bugs.webkit.org/attachment.cgi?id=296927&action=review > Source/JavaScriptCore/heap/SpaceTimeScheduler.cpp:111 > + std::max( > + m_bytesAllocatedThisCycleAtTheBeginning, > + static_cast<double>(heap.m_maxEdenSize))) I like writing it this way: std::max<double>( ... <<no static_cast needed here>> heap.m_maxEdenSize)) > Source/JavaScriptCore/heap/SpaceTimeScheduler.h:39 > + Decision() { } This isn’t needed. If we leave it out, it gets generated with exactly the same contents as if we write this. 1259115 4 fpizlo 2016-12-12 10:50:58 -0800 (In reply to comment #3) > Comment on attachment 296927 [details] > the patch > > View in context: > https://bugs.webkit.org/attachment.cgi?id=296927&action=review > > > Source/JavaScriptCore/heap/SpaceTimeScheduler.cpp:111 > > + std::max( > > + m_bytesAllocatedThisCycleAtTheBeginning, > > + static_cast<double>(heap.m_maxEdenSize))) > > I like writing it this way: > > std::max<double>( ... <<no static_cast needed here>> heap.m_maxEdenSize)) That's so much better! I never thought to specialize max explicitly. > > > Source/JavaScriptCore/heap/SpaceTimeScheduler.h:39 > > + Decision() { } > > This isn’t needed. If we leave it out, it gets generated with exactly the > same contents as if we write this. Thanks! I always forget the exact rules. Maybe I wrote too much Java in a past life. 1259194 5 fpizlo 2016-12-12 14:05:26 -0800 (In reply to comment #2) > Comment on attachment 296927 [details] > the patch > > View in context: > https://bugs.webkit.org/attachment.cgi?id=296927&action=review > > > Source/JavaScriptCore/ChangeLog:8 > > + This factors out the scheduler from a bunch of lambdas and closed-over variables in > > Should this read "... from the scheduler a bunch ..."? > > > Source/JavaScriptCore/ChangeLog:14 > > + still had time during a mutator timeslice. This greatly splay-latency. I'm still testing > > Fix the sentence "This greatly splay-latency." Fixed! 1259195 6 fpizlo 2016-12-12 14:07:52 -0800 Landed in https://trac.webkit.org/changeset/209727 1259197 7 fpizlo 2016-12-12 14:08:13 -0800 *** Bug 164940 has been marked as a duplicate of this bug. *** 1259521 8 cdumez 2016-12-13 13:34:40 -0800 (In reply to comment #6) > Landed in https://trac.webkit.org/changeset/209727 I am still confirming but this was likely a ~4% Speedometer regression on Mac. 1259522 9 fpizlo 2016-12-13 13:38:07 -0800 (In reply to comment #8) > (In reply to comment #6) > > Landed in https://trac.webkit.org/changeset/209727 > > I am still confirming but this was likely a ~4% Speedometer regression on > Mac. The policy change in this patch was already rolled out. 1259523 10 cdumez 2016-12-13 13:40:47 -0800 (In reply to comment #9) > (In reply to comment #8) > > (In reply to comment #6) > > > Landed in https://trac.webkit.org/changeset/209727 > > > > I am still confirming but this was likely a ~4% Speedometer regression on > > Mac. > > The policy change in this patch was already rolled out. Could you point me to the revision of the rollout please so I can confirm the progression then? 1259525 11 fpizlo 2016-12-13 13:53:23 -0800 (In reply to comment #10) > (In reply to comment #9) > > (In reply to comment #8) > > > (In reply to comment #6) > > > > Landed in https://trac.webkit.org/changeset/209727 > > > > > > I am still confirming but this was likely a ~4% Speedometer regression on > > > Mac. > > > > The policy change in this patch was already rolled out. > > Could you point me to the revision of the rollout please so I can confirm > the progression then? https://trac.webkit.org/changeset/209763 296927 2016-12-12 09:46:40 -0800 2016-12-12 10:04:51 -0800 the patch blah.patch text/plain 25606 fpizlo SW5kZXg6IFNvdXJjZS9KYXZhU2NyaXB0Q29yZS9DaGFuZ2VMb2cKPT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PQotLS0gU291 cmNlL0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwkocmV2aXNpb24gMjA5NzEyKQorKysgU291cmNl 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