RFR: 8213966: The ZGC JFR events should be marked as experimental
per.liden at oracle.com
Thu Nov 29 12:58:16 UTC 2018
Looks good to me.
On 11/28/18 9:15 PM, Erik Gahlin wrote:
> Could I have a review of a fix that will mark the ZGC events for JFR as
> The experimental attribute was created so that JVM developers could add
> events more freely to HotSpot without the burden to write unit tests or
> commit to a particular event design. Experimental events are not shown
> in JMC by default, but can be made visible in the Preference dialog. See
> the following picture.
> As part of this change, I also moved the Z Page Allocation event into
> JVM / GC / Detailed category with the other ZGC events. It seemed more
> appropriate, as the Java category is meant for events that are more
> close to the Java application when doing troubleshooting.
> The experimental=true attribute can be removed/changed in a future
> release. At that time, it may make sense to revisit the event layout.
> Perhaps break up the Z Statistics event into more fine-grained events
> with proper labels and descriptions. Marking the ZGC events as
> experimental also means the events won't require special treatment in
> TestLookForUntestedEvents test.
More information about the zgc-dev