Survivor space class historgram print (know your bad garbage)

[Srinivas Ramakrishna]

AFAR, it was not integrated at that time because of the performance impact
even when the feature was turned off.
I believe it would be possible to refactor the code, at some cost, to get
this to work without that performance
impact, but that didn't get done. It might be time to revisit that code and
do the requisite refactoring. Tony et al?

-- ramki


On Wed, Nov 16, 2011 at 3:45 PM, Michal Frajt <michal at frajt.eu> wrote:

> Hi,****
>
> ** **
>
> Is there a way to get printed a survivor space class histogram on every
> minor collection run? Tony once provided us a special jdk build containing
> this feature but it got never integrated as a print flag into the main
> hotspot version. It was very useful for understanding and identifying
> promoted objects to the old gen. Additionally we were looking to get a
> class histogram print for the eden space but there was no easy way to
> implement it. The eden space class histogram would help to identify garbage
> invoking minor collection runs. It could be as well used to check the
> impact of the scalar replacements.****
>
> ** **
>
> Would it be possible to reimplement both histogram prints?****
>
> ** **
>
> Thanks,****
>
> Michal****
>
> _______________________________________________
> hotspot-gc-use mailing list
> hotspot-gc-use at openjdk.java.net
> http://mail.openjdk.java.net/mailman/listinfo/hotspot-gc-use
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mail.openjdk.org/pipermail/hotspot-gc-dev/attachments/20111116/77872637/attachment.htm>
-------------- next part --------------
_______________________________________________
hotspot-gc-use mailing list
hotspot-gc-use at openjdk.java.net
http://mail.openjdk.java.net/mailman/listinfo/hotspot-gc-use