On Tuesday, March 15, 2016 at 8:30:01 AM UTC+6, Gregory Szorc wrote: > According to https://bugzilla.mozilla.org/show_bug.cgi?id=1254767#c2 a > number of apparently layout related Talos figures regressed on PGO builds > performed with Visual Studio 2015. This is concerning and represents a > potential showstopper for switching automation to VS2015 this release cycle. > > I'm sending this email to ask for help from layout technical experts to > help identify reasons for the regressions. Links to builds you can > test/profile with are in the bug. > > I'm reasonably confident that the PGO profiling and optimization process > completed successfully. But don't rule out a failure there that's causing > layout code to not get PGO benefits. > > Can someone please help us understand where layout code is slower with > these builds so we can switch to VS2015 in the next week or two? > > gps
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