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runtime: stack copying performance regressions #28678
The runtime stack copying benchmarks have regressed significantly since Go 1.11.
A very quick benchmark run shows:
I'm not seeing the difference reported here. Tip seems faster than 1.11.2.
It would be strange for these benchmarks to be affected by the extra stack object code. None of them has a stack object, so the additional cost is just another
GC stack scanning might be more expensive for
Hello @josharian, I am doing a bit of issue gardening and wondering if we can punt this to Go1.13 and we can do investigations there. What do you think?