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Re:GC progress from JDK 8 to JDK 17 by atom3 on Wednesday November 24, 2021 @01:34PM (#29333432)
According to the cppcon talk about Mesh [1] (an allocator that implement compaction for C++ programs), the overhead can be massive too (17% overhead measured on firefox, 50% on redis!)

[1] https://youtu.be/XRAP3lBivYM?t=1374

Re:GC progress from JDK 8 to JDK 17 by jimsimmons on Wednesday November 24, 2021 @01:54PM (#29333677)
Nice link. I guess theoretically you can always optimise this in languages with manual management. With complex GC you have to figure out a way to tame the beast and I’m not sure if it’s easier to reason about