Across the board increase.

Boris has some checkins around this time.

What's the pushlog range here? What is this test measuring, exactly?

Range is 9/9/2008 5:45pm -0700 / 9/9/2008 7:01pm -0700

And what are we measuring? Pushlog for that date range is http://hg.mozilla.org/mozilla-central/pushloghtml?startdate=2008-09-09+5%3A45%3A00&enddate=9%2F9%2F2008+7%3A01pm

Er, the correct pushlog url is http://hg.mozilla.org/mozilla-central/pushloghtml?startdate=2008-09-09+17%3A45%3A00&enddate=2008-09-09+19%3A01%3A00 If this is memory consumption after the talos run finishes, it might be that the issue is the docshell change...

working set http://msdn.microsoft.com/en-us/library/ms684891(VS.85).aspx

XP and Vista http://graphs.mozilla.org/#show=395024,395034,395054&sel=1220829489,1221157740 http://graphs.mozilla.org/#show=787147,787146,787108&sel=1220878181,1221146988

RSS is also up on the other platforms: Ubuntu - http://graphs.mozilla.org/#show=395170,395139,395141&sel=1220883041,1221162120 OSX Tiger - http://graphs.mozilla.org/#show=394895,394915,394904&sel=1220932262,1221112865 OSX Leopard - http://graphs.mozilla.org/#show=794420,794419,794433&sel=1220980903,1221055523 --> All

Just backed out bug 396519 to see if it is the cause

Looks like the back out for bug 396519 has fixed this. http://graphs.mozilla.org/graph.html#show=911694,911696,911698

Mac OS X appears to be fixed as well http://graphs.mozilla.org/graph.html#show=911655,911657,911659

Windows is fixed as well... reopening the tree

It also looks like there were pageload *time* spikes over the same time period. See, e.g., Mac: http://graphs.mozilla.org/graph.html#show=394872,394887,394900,911655,1431170&sel=1220899002,1221274013 Windows: http://graphs.mozilla.org/graph.html#show=395008,395020,395048,912148,1431867&sel=1220843235,1221359925