RFR (XXS) 8229835: Shenandoah should recommend -Xlog:safepoint+stats=info

[Florian Weimer]

* Aleksey Shipilev:

> On 8/16/19 9:26 PM, Florian Weimer wrote:
>> Shenandoah refers to a Hotspot option that was removed in OpenJDK 12.
>> 
>> Bug: <https://bugs.openjdk.java.net/browse/JDK-8229835>
>> Webrev: <http://cr.openjdk.java.net/~fweimer/8229835/webrev.00/>
>
> Thanks!
>
> I think "info" is implied, so we can just do this:
>
> -  out->print_cr("        and post-safepoint housekeeping. Use -XX:+PrintSafepointStatistics to
> dissect.");
> +  out->print_cr("        and post-safepoint housekeeping. Use -Xlog:safepoint+stats to dissect.");
>    out->print_cr("  \"(N)\" (net) pauses are the times spent in the actual GC code.");

Okay.

Updated webrev: <http://cr.openjdk.java.net/~fweimer/8229835/webrev.01/>

Thanks,
Florian