Package sirius.kernel.health.metrics

Used to record and monitor system metrics.

See: Description

Interface Summary

Interface	Description
MetricProvider	Provides metrics to the metrics system.
MetricsCollector	Used by implementations of MetricProvider to provide metrics to Metrics.

Class Summary

Class	Description
Metric	Represents a measured value, recorded by the metrics framework.
Metrics	Collects and stores metrics for various parts of the system.
SystemMetricProvider	Provides core metrics for the operating system, the Java Virtual Machine and central frameworks.

Enum Summary

Enum	Description
MetricState	Represents an interpretation of a measured metric.

Package sirius.kernel.health.metrics Description

Used to record and monitor system metrics.

Defines a discovery interface MetricProvider which is found and monitored by Metrics. The SystemMetricProvider uses Sigar and JMX to provide some basic metrics for the JVM and the underlying machine.

Limits for all metrics can be defined in the system configuration under health.limits.[metric]:

• gray: Up to this value, it is considered as not noteworthy and normally not shown. Everything above is active, but good.
• warning: If this value is reached, this metric is considered increased but still acceptable.
• error: Once this value is reached, the system stability is no longer guaranteed and some action is required. If there is no upper limit for a metric, this value can also be skipped.

Eache module which provides metrics normally also defines some default limits in its component-[name].conf.