RFR(S): 8227692: Remove develop feature PrintMallocStatistics

[Doerr, Martin]

Hi Dan,

I've added the proposal to use "-XX:NativeMemoryTracking=summary -XX:+PrintNMTStatistics" instead.

Thanks,
Martin


> -----Original Message-----
> From: Daniel D. Daugherty <daniel.daugherty at oracle.com>
> Sent: Dienstag, 16. Juli 2019 18:04
> To: Doerr, Martin <martin.doerr at sap.com>; hotspot-runtime-
> dev at openjdk.java.net
> Cc: Baesken, Matthias <matthias.baesken at sap.com>
> Subject: Re: RFR(S): 8227692: Remove develop feature PrintMallocStatistics
> 
> For anyone that happens to be searching JBS for what happened to the
> '-XX:+PrintMallocStatistics' option, you might want to include some
> guidance on how they get the equivalent information from NMT...
> 
> A short note in JDK-8227692 should suffice...
> 
> Dan
> 
> 
> On 7/15/19 4:16 PM, Doerr, Martin wrote:
> > Hi,
> >
> > as announced on hotspot-dev, I'd like to remove the debug build feature
> for allocation statistics "AllocStats" (controlled by develop flag -
> XX:+PrintMallocStatistics).
> > I've closed JDK-8227597<https://bugs.openjdk.java.net/browse/JDK-
> 8227597> which was a proposal to reduce the performance impact of it, but
> several people have suggested to remove this feature which is even better
> IMHO.
> >
> > Bug:
> > https://bugs.openjdk.java.net/browse/JDK-8227692
> >
> > Webrev:
> >
> http://cr.openjdk.java.net/~mdoerr/8227692_remove_PrintMallocStatistics/
> webrev.00/
> >
> > I've also taken over the reworked inc_stat_counter from JDK-
> 8227597<https://bugs.openjdk.java.net/browse/JDK-8227597>
> (allocation.inline.hpp).
> > Please review.
> >
> > Best regards,
> > Martin
> >