RFR (S): 8245088: Always provide logs for G1 heap expansion calculations

Thomas Schatzl thomas.schatzl at oracle.com
Mon May 18 08:24:34 UTC 2020


On 18.05.20 10:23, Thomas Schatzl wrote:
> Hi all,
>    I would like the heap ergonomics code which determines by what amount 
> to expand to always print internal state, not only on changes.
> Since heap expansion is based on long term (and short term) application 
> behavior, getting only information when something happened is too late 
> to understand the results.
> The gc+ergo+heap=debug log message has also been changed to include all 
> interesting information; there is a new trace level message that tracks 
> our low-pass filter.

   this is based on 8245087.

> CR:
> https://bugs.openjdk.java.net/browse/JDK-8245088
> Webrev:
> http://cr.openjdk.java.net/~tschatzl/8245088/webrev/
> Testing:
> hs-tier1-5
> Thanks,
>    Thomas


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