On Thu, Nov 15, 2012 at 12:34 AM, Elliott Sprehn <[email protected]>wrote:
> > On Thu, Nov 15, 2012 at 3:22 AM, Chris Evans <[email protected]> wrote: > >> >>> ... >>> >> >> My read on the Arena is that it's fragmentation resistant (i.e. it will >> not repurpose a larger free chunk to satisfy a smaller allocation.) >> However, memory usage at any given time is defined by peak usage since it >> cannot release pages back to the system without ruining its security >> guarantee. Interestingly, it can't be super bad: we already bite this >> bullet for RenderArena as used by RenderObjects. The RenderArena lifetime >> is the same as the document / DOM and I was surprised to recently be told >> that we don't throw away the RenderArena on a full layout. >> >> > My understanding is that the render tree is rather small compared to the > DOM in terms of memory usage on most pages > This does not seem to necessarily be the case. Loading Gmail to the inbox view, sizes in bytes for all live allocations: - 541k in the DOM arena - At least a 918k plus a 49k render arena. May have failed to count a few smaller ones that are still live. Would you like similar measurements for a simpler page? Or some other complicated page you think might be instructive? Cheers Chris so not releasing it may not be so bad, but never releasing the memory used > from DOM nodes seems like it'd be bad for large web apps. > > - E >
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