RFR(S): 6818524: G1: use ergonomic resizing of PLABs

[Vladimir Sitnikov]

2012/8/8 Kirk Pepperdine <kirk at kodewerk.com>

> Hi,
>
> I'm looking at this record.
>
> 919.673: [GC-- [PSYoungGen: 643582K->643582K(648704K)]
> 1905561K->2004508K(2014080K), 0.0319900 secs]
>
> Are you sure this is a G1 gc log?

Those "GC--" stand for promotion failure case (VM have recognized that is
was very likely that tenured would be flooded by scavenge). Please, refer
to
http://hg.openjdk.java.net/jdk6/jdk6/hotspot/file/a541ca8fa0e3/src/share/vm/gc_implementation/parallelScavenge/psScavenge.cpp


      445     promotion_failure_occurred = promotion_failed();

      446     if (promotion_failure_occurred) {

      447       clean_up_failed_promotion();

      448       if (PrintGC) {

      449         gclog_or_tty->print("--");

      450       }

      451     }


-- 
Regards,
Vladimir Sitnikov
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