On May 31, 2016, at 2:22 , Nicholas Nethercote
<n.netherc...@gmail.com> wrote:

#2 is unannotated MOZ_CRASH() calls, i.e. there is no string
argument given. These are mostly OOMs, though there are a few
others in there. These ones should be annotated so they show up
separately.

I took a quick look at a random one of these OOMs[1], and what strikes me about it is that according to the crash report:

        Total Virtual Memory    2147352576

        Available Virtual Memory        122331136

        System Memory Use Percentage    52

        Available Page File     4932567040

        Available Physical Memory       1790652416

        OOM Allocation Size     24

it seems like the system is still some way from running out of memory. Available Virtual Memory is "only" 122MB, which admittedly isn't very much in present-day terms, but still....why can't we successfully allocate a 24-byte block? Can those 122MB really be _so_ fragmented?!

JK

[1] https://crash-stats.mozilla.com/report/index/e59d2f18-2131-4f24-9f43-7038b2160524
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