@Amit
Re: Vacuum etc.
Chrome V8 just released this blog post around concurrent marking, which may
be of interest considering how cpu limited the browser is. Contains
benchmark numbers etc in post as well.
https://v8project.blogspot.com/2018/06/concurrent-marking.html
"This post describes the garbage collection technique called concurrent
marking. The optimization allows a JavaScript application to continue
execution while the garbage collector scans the heap to find and mark live
objects. Our benchmarks show that concurrent marking reduces the time spent
marking on the main thread by 60%–70%"
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