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https://issues.apache.org/jira/browse/IGNITE-22249?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Roman Puchkovskiy updated IGNITE-22249:
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Description:
Currently, we have only one GC metric: jvm.gc.CollectionTime. It's a sume
across all collectors.
More details can be exported about GC as metrics. The difficulty here is that a
JVM might have more than one GCs (for example, Java 11 has G1 Young Gen and G1
Old Gen collectors by default). We need to invent a way to present this
information as metrics for all collectors.
A few approaches are possible (maybe there are more):
# Ignite 2 has just one metric for a sum of CollectionTime
# We might classify collectors as major/minor and output their metrics
separately. This is something like
[DataLog|https://opentelemetry.io/docs/specs/semconv/runtime/jvm-metrics/] does.
#
[OpenTelemetry|https://opentelemetry.io/docs/specs/semconv/runtime/jvm-metrics/]
annotates each datapoint with collectorName. Our metrics system does not have
annotations though.
# Just use dynamic metrics where metric key would contain a (possibly
transformed) collector name, like jvm.gc.<collector-name>.CollectionTime.
> Add more GC metrics
> -------------------
>
> Key: IGNITE-22249
> URL: https://issues.apache.org/jira/browse/IGNITE-22249
> Project: Ignite
> Issue Type: Improvement
> Reporter: Roman Puchkovskiy
> Priority: Major
> Labels: ignite-3
>
> Currently, we have only one GC metric: jvm.gc.CollectionTime. It's a sume
> across all collectors.
> More details can be exported about GC as metrics. The difficulty here is that
> a JVM might have more than one GCs (for example, Java 11 has G1 Young Gen and
> G1 Old Gen collectors by default). We need to invent a way to present this
> information as metrics for all collectors.
> A few approaches are possible (maybe there are more):
> # Ignite 2 has just one metric for a sum of CollectionTime
> # We might classify collectors as major/minor and output their metrics
> separately. This is something like
> [DataLog|https://opentelemetry.io/docs/specs/semconv/runtime/jvm-metrics/]
> does.
> #
> [OpenTelemetry|https://opentelemetry.io/docs/specs/semconv/runtime/jvm-metrics/]
> annotates each datapoint with collectorName. Our metrics system does not
> have annotations though.
> # Just use dynamic metrics where metric key would contain a (possibly
> transformed) collector name, like jvm.gc.<collector-name>.CollectionTime.
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