Hi Andrey,
> Sometimes before i suggested additional optimization [1] which can
> additionally speed up COPY by 2-4 times. Maybe you can perform the
> benchmark for this solution too?
Sorry for the late reply, I just have time to take this test now.
But the patch no longer applies, I tried to apply on e42b3c3bd6(2021/1/26) but failed.
Can you send a rebased version?
Regards,
Tang