RFR: 8003209: JFR events for network utilization

[Robin Westberg]

Hi yet one more time,

Markus found another optimization that allows us to store timestamps once instead of per interface, which should save a bit of space.

Incremental: http://cr.openjdk.java.net/~rwestberg/8003209/webrev.02-03/ <http://cr.openjdk.java.net/~rwestberg/8003209/webrev.02-03/>
Full: http://cr.openjdk.java.net/~rwestberg/8003209/webrev.03/ <http://cr.openjdk.java.net/~rwestberg/8003209/webrev.03/>

Best regards,
Robin

> On 26 Jun 2018, at 21:14, Robin Westberg <robin.westberg at oracle.com> wrote:
> 
> Hi once again,
> 
> After some additional off-list feedback from Markus I’ve also added a stub implementation for aix (that hopefully compiles), as well as cleaned up the headers included in the unit test.
> 
> Incremental: http://cr.openjdk.java.net/~rwestberg/8003209/webrev.01-02/ <http://cr.openjdk.java.net/~rwestberg/8003209/webrev.01-02/>
> Full: http://cr.openjdk.java.net/~rwestberg/8003209/webrev.02/ <http://cr.openjdk.java.net/~rwestberg/8003209/webrev.02/>
> 
> Best regards,
> Robin
> 
>> On 26 Jun 2018, at 15:01, Robin Westberg <robin.westberg at oracle.com> wrote:
>> 
>> Hi again,
>> 
>> Markus kindly provided some off-list feedback with a patch to make the serialization of interfaces names more efficient. I’ve incorporated those changes, as well as adapted the unit test and corrected a few copyright years.
>> 
>> Incremental: http://cr.openjdk.java.net/~rwestberg/8003209/webrev.00-01/ <http://cr.openjdk.java.net/~rwestberg/8003209/webrev.00-01/>
>> Full: http://cr.openjdk.java.net/~rwestberg/8003209/webrev.01/ <http://cr.openjdk.java.net/~rwestberg/8003209/webrev.01/>
>> 
>> Best regards,
>> Robin
>> 
>>> On 25 Jun 2018, at 21:04, Robin Westberg <robin.westberg at oracle.com> wrote:
>>> 
>>> Hi all,
>>> 
>>> Please review the following change with adds a JFR event for tracking network utilization on the network interface level.
>>> 
>>> Issue: https://bugs.openjdk.java.net/browse/JDK-8003209 <https://bugs.openjdk.java.net/browse/JDK-8003209>
>>> Webrev: http://cr.openjdk.java.net/~rwestberg/8003209/webrev.00/ <http://cr.openjdk.java.net/~rwestberg/8003209/webrev.00/>
>>> Testing: test/jdk/jdk/jfr/*
>>> 
>>> Many thanks to Erik Gahlin and Markus Grönlund who have looked at earlier versions of this change and suggested valuable improvements.
>>> 
>>> Best regards,
>>> Robin
>> 
>