G1 Old Generation GC collection event not sent after Mixed evacuation pause

[Sundara Mohan M]

Jenny,
   Thanks for the update.

Another question i was looking at the source and saw this,

enum G1YCType {
  Normal,
  InitialMark,
  DuringMark,
  Mixed,
  G1YCTypeEndSentinel
};


Any idea why InitialMark are categorized as Young Collection, though it is
processing in Old Generation?
Also mixed can include old regions in which case it should be categorized
as Old Generation.

Just trying to understand if this is designed like this or this is kind of
bug?


Thanks,
Sundar

On Wed, Jul 19, 2017 at 8:24 AM, yu.zhang at oracle.com <yu.zhang at oracle.com>
wrote:

> Sundara,
>
> I have filed this bug https://bugs.openjdk.java.net/browse/JDK-8145923
>
> But has not been fixed.
>
> Jenny
>
> On 07/18/2017 10:41 AM, Sundara Mohan M wrote:
>
> Hi,
>    I am trying to capture all GC event happened on G1 Old Generation.
> I was expecting when G1 Evacuation pause (mixed) happens it should trigger
> event to my app but instead, i am getting notification only when Full GC
> happens.
>
> Here is what i am doing
>
> gcMxBeanListener = myFunction(...)
> oldGen  = ManagementFactiory.getGarbageCollectorMXBeans find { "G1 Old
> Generation" }
> oldGen.addNotificationListener(gcMxBeanListener, null, null)
>
> But in the case of CMS GC, it is triggered when the concurrent cycle is
> completed.
>
>
> Is there something i am missing?
>
> Thanks,
> Sundar
>
>
> _______________________________________________
> hotspot-gc-use mailing listhotspot-gc-use at openjdk.java.nethttp://mail.openjdk.java.net/mailman/listinfo/hotspot-gc-use
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.openjdk.java.net/pipermail/hotspot-gc-use/attachments/20170719/8423db58/attachment.html>