RFR: Print out garbage and cset data with -Xlog:gc+ergo

[Zhengyu Gu]

Look good.

-Zhengyu

On 03/24/2017 02:28 PM, Aleksey Shipilev wrote:
> Hi,
>
> I would like to have it in product builds:
>   http://cr.openjdk.java.net/~shade/shenandoah/policy-print-cset/webrev.01/
>
> Prints:
>
> [39.903s][info][gc,ergo] GC(21) Total Garbage: 8701M
> [39.903s][info][gc,ergo] GC(21) Immediate Garbage: 0M, 0 regions
> [39.903s][info][gc,ergo] GC(21) Garbage to be collected: 760M (8% of total), 152
> regions
> [39.903s][info][gc,ergo] GC(21) Live objects to be evacuated: 455M
> [39.903s][info][gc,ergo] GC(21) Live/garbage ratio in collected regions: 59%
>
>
> Thanks,
> -Aleksey
>