RFR: 8310996: Add JFR event for connect operations [v5]

[Alan Bateman]

On Sun, 24 Nov 2024 23:15:02 GMT, Erik Gahlin <egahlin at openjdk.org> wrote:

> Perhaps this should be made more explicit with a failed field. Alternatively, there could be two events: one for success and one for failure. What is the typical duration of a failed event? If it is above 10-20 ms, two events might not be as useful since all failures will be recorded anyway.

If a connection cannot be established then it might be immediate, 10s of milliseconds, maybe 60+ seconds in some cases. A slow down or stall waiting for a connection to be established seems a useful event to have recorded.

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PR Review Comment: https://git.openjdk.org/jdk/pull/21528#discussion_r1856011185