(In reply to Jon Coppeard (:jonco) from comment #3) > It's really strange that making more GCs full GCs would increase memory usage. Just wondering if you have an idea of what's going on here Paul? Thanks for lending a 2nd (& third Ted!) I was looking at the memory reports for and I see the difference appears to be in the bin-unused, which is the fragmentation of the jemalloc heap. But for any cause I could think of I expected to see a corresponding negative amount for some memory being freed. So I appriciate the extra eyes here. I started with the Tabs Closed Settled memory reports and saw only this fragmentation. I was unable to get perfherder to show me the subtests due to Bug 1729057, which might have helped direct my search. So my best guess is like Ted said: > We wonder if the full-GC is throwing off the CC heuristics and we are somehow keeping old windows around longer than before? I want to try messing with the patch to see what extra clues I can get. But I also want to try DMD like Ted did, that may be a more solid lead here. Thanks everyone.
Bug 1729890 Comment 11 Edit History
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(In reply to Jon Coppeard (:jonco) from comment #3) > It's really strange that making more GCs full GCs would increase memory usage. Just wondering if you have an idea of what's going on here Paul? Thanks for lending a 2nd (& 3rd Ted!) set of eyes. I was looking at the memory reports for and I see the difference appears to be in the bin-unused, which is the fragmentation of the jemalloc heap. But for any cause I could think of I expected to see a corresponding negative amount for some memory being freed. So I appriciate the extra eyes here. I started with the Tabs Closed Settled memory reports and saw only this fragmentation. I was unable to get perfherder to show me the subtests due to Bug 1729057, which might have helped direct my search. So my best guess is like Ted said: > We wonder if the full-GC is throwing off the CC heuristics and we are somehow keeping old windows around longer than before? I want to try messing with the patch to see what extra clues I can get. But I also want to try DMD like Ted did, that may be a more solid lead here. Thanks everyone.