On Thu, Jul 12, 2018 at 1:18 AM, Eric Rahm <er...@mozilla.com> wrote:
> What performance issues are you seeing? RSS and USS should be relatively > lightweight and the polling frequency isn't very high. It seems ResidentUniqueDistinguishedAmount does blocking system calls, resulting in blocking the main thread for several seconds in the worst case. Here's a screenshot of a profile showing it: https://i.imgur.com/DjRMQtY.png (unfortunately that profile is too big and fails to upload with the 'share' feature). There's also a memory leak in the implementation, after leaving about:performance open for a couple hours, there was more than 300MB of JS "Function" and "Call" objects (about:memory screenshot: https://i.imgur.com/21YNDru.png ) and the devtools' Memory tool shows that this is coming from the code queuing updates to that subprocess memory table: https://i.imgur.com/04M71hg.png Florian -- Florian Quèze _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
