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A comment on A Deep Introduction to JIT Compilers: JITs are not very Just-in-time. Parent comment

Re:A Deep Introduction to JIT Compilers: JITs are not very J... by littlestymaar on Wednesday July 08, 2020 @06:38AM (#23768617)
Reading PDF on mobile is annoying so I can't comment on the content of your first link, but your claim that a bump allocator is no more than 10% faster than a free-list-based one is really suspicious:

- first, as you said, people repeat the opposite a lot, including world class GC experts.

- then, unless I'm missing something, that claim sounds equivalent to claiming than heap allocation is no more than 10% more expensive than stack allocation, which is arguably completely false.

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Re:A Deep Introduction to JIT Compilers: JITs are not very J... by jashmatthews on Wednesday July 08, 2020 @08:49AM (#23769323)
That’s why I linked the paper from JVM GC researchers with the direct quote on freelist vs bump pointer „Finding the right fit is about 10% slower [13] than bump- pointer allocation.”
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