RFR: 8252093: formula used to calculate decaying variance in numberSeq

stefan.johansson at oracle.com stefan.johansson at oracle.com
Fri Aug 28 07:32:46 UTC 2020

On 2020-08-27 20:41, Albert Yang wrote:
>  > Have you run any benchmarks and compared scores as well as GC-behavior?
> Checking SPECjbb2015 now. What kind of GC behavior do you have in mind?
Something like running jbb2015 and other benchmarks without any options 
(maybe just max heap), and looking at if there is any change in for 
example heap/generation sizing or when we start concurrent cycles.

It's probably also good to look at the logs for a tuned run and see that 
things looks the same there, but when tuning the heuristics don't get as 
much room.

>  > Is there a good reason for keeping it inverted
> The only thing I can think of is to avoid invasive change. I am more 
> leaned towards changing it to be consistent with the literature.

I agree with you, I guess it can be done as a follow up.


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