RFR: JDK-8055845 - Add trace event for promoted objects

Staffan Friberg staffan.friberg at oracle.com
Wed Aug 27 16:52:26 UTC 2014


HI Dima,

The event is specified in trace.xml as all other events, please see the 
updated webrev as some changes was made to the descriptions.
http://cr.openjdk.java.net/~brutisso/8055845/webrev.01

I'm in the process of writing regression tests, but they will be a 
separate webrev as they will be located in a separate repository.

Regards,
Staffan

On 08/27/2014 04:08 AM, Dmitry Fazunenko wrote:
> Hi Staffan,
>
> Thanks for submitting RFE and implementing it! This event seems to be 
> used widely.
> So it's very important to design it correctly.
> May I ask you to provide some extra information:
> - format of event
>   (this could be included in the CR description)
> - regression tests for that event will be also required
> - please include hotspot-dev on CC
>
> Thanks,
> Dima
>
> On 25.08.2014 20:28, Staffan Friberg wrote:
>> Hi,
>>
>> Could I please get reviews for this RFE that adds a trace event for 
>> aging and promotion for young collections in G1, CMS and Parallel GC.
>> It works similarly to allocation events, and generates the event on 
>> the slow path when either a direct copy occurs or a new PLAB is request.
>>
>> Since I'm adding an event I cc:ed the serviceability list in case 
>> anyone has any comments on the event and changes to trace.xml.
>>
>> RFE: https://bugs.openjdk.java.net/browse/JDK-8055845
>> Webrev: http://cr.openjdk.java.net/~brutisso/8055845/webrev.00
>>
>> Bengt has been kind and agreed to both sponsor and host the the webrev.
>>
>> Thanks,
>> Staffan
>>
>



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