On Mon, 22 Mar 2021 15:57:12 GMT, Jaroslav Bachorik <jbacho...@openjdk.org> wrote:
> With this change it becomes possible to surface various cgroup level metrics > (available via `jdk.internal.platform.Metrics`) as JFR events. > > Only a subset of the metrics exposed by `jdk.internal.platform.Metrics` is > turned into JFR events to start with. > * CPU related metrics > * Memory related metrics > * I/O related metrics > > For each of those subsystems a configuration data will be emitted as well. > The initial proposal is to emit the configuration data events at least once > per chunk and the metrics values at 30 seconds interval. > By using these values the emitted events seem to contain useful information > without increasing overhead (the metrics values are read from `/proc` > filesystem so that should not be done too frequently). @jbachorik Would it make sense for `ContainerConfigurationEvent` to include the underlying cgroup version info (v1 or legacy vs. v2 or unified)? `Metrics.getProvider()` should give that info. ------------- PR: https://git.openjdk.java.net/jdk/pull/3126
