RFR: 8008916 G1: Evacuation failed tracing event

[Jesper Wilhelmsson]

Hi,

After several different versions and realizations about the worker threads in 
G1, here is now a new version of the evacuation failed event.

To include the correct thread with each event has turned out to require more 
work and footprint overhead than what can be motivated at this point, and since 
any other solution would be confusing rather than informative, we have decided 
not to include the thread information in the evacuation failed event for now.

The thread information was never a requirement in the first place, we just threw 
it in there in the promotion failed event because it was easily available in the 
parallel collectors and someone might be able to use it for debugging at some point.

An RFE [1] has been created to remind us to look at this again for G1.

The updated webrev is here:
http://cr.openjdk.java.net/~jwilhelm/8008916/webrev/

Bug: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8008916

[1]: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8012217

Thanks!
/Jesper

Jesper Wilhelmsson skrev 28/3/13 7:50 PM:
> Hi,
>
> A new version of the evacuation failed event for G1. Now, each thread sends an
> event with the info it has collected during the collection in the same way as
> the other collectors do with promotion failed events.
>
> Webrev: http://cr.openjdk.java.net/~jwilhelm/8008916/webrev.2/
>
> Thanks,
> /Jesper