Understanding High Object Copy Times

[nezih yigitbasi]

Hi,
We see huge object copy times (and relatively high termination times)
during young GCs in our production system running on Java 1.8.0_112-b15.
You can find the GC logs here:
https://gist.github.com/nezihyigitbasi/1f7a92da7860908a611cb1197bd8626b

The young GC times start going high after the timestamp
"2017-04-26T03:07:22.164-0700".

I will appreciate if you can give some details about:
- what goes into the "Object Copy" phase during young GCs and how we can
reduce it.
- why we see high Termination times and what we can do about it

Thanks,
Nezih
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