> 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).
Jaroslav Bachorik has updated the pull request incrementally with one additional commit since the last revision: Remove conditinal registration of event hooks ------------- Changes: - all: https://git.openjdk.java.net/jdk/pull/3126/files - new: https://git.openjdk.java.net/jdk/pull/3126/files/e0f5855b..37931f4a Webrevs: - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=3126&range=13 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=3126&range=12-13 Stats: 16 lines in 1 file changed: 1 ins; 4 del; 11 mod Patch: https://git.openjdk.java.net/jdk/pull/3126.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/3126/head:pull/3126 PR: https://git.openjdk.java.net/jdk/pull/3126
