Package com.bigdata.counters

Package supports declaration, collection, and interchange of performance counters for both hosts and processes on supported platforms.

See: Description

Interface Summary

Interface	Description
AbstractStatisticsCollector.Options	Options for AbstractStatisticsCollector
ICounter<T>	Interface for a sampled counter.
ICounterHierarchy	Various namespaces for per-host and per-process counters.
ICounterNode	Shared abstraction layer for both ICounterSet and ICounter.
ICounterSet	A collection of named Counters.
ICounterSet.IInstrumentFactory	A factory for IInstrument.
ICounterSetAccess	Interface for self-reporting performance counters.
IHistoryEntry<T>	A view of a sample period for some History.
IHostCounters	Additional counters that hosts can report.
IInstrument<T>	Interface used to construct a counter that reports on an instrumented value.
IProcessCounters	Counters defined on a per-process basis.
IRequiredHostCounters	The set of core (required) counters that must be reported for all platforms.
IServiceCounters	Various counter names, paths, in common use by some services.
IStatisticsCollector	Interface for collecting performance counters for a host or a process.

Class Summary

Class	Description
AbstractCounterSet
AbstractProcessCollector	Base class for collection of performance counters as reported by a native process.
AbstractProcessReader	A Runnable that reads the output of an ActiveProcess.
AbstractStatisticsCollector	Base class for collecting data on a host.
ActiveProcess	Command manages the execution and termination of a native process and an object reading the output of that process.
CAT	An alias for the high-scale-lib counter implementation.
CounterSet	A set of counters arranged in a hierarchy, much like a file system.
DefaultInstrumentFactory	Used to read in CounterSet XML, aggregating data into HistoryInstruments.
History<T>	Retains history for N periods, where the period is expressed in milliseconds.
HistoryInstrument<T>	A history instrument which aggregates samples into a circular buffer with a specified sample period.
Instrument<T>	Abstract class for reporting instrumented values supporting some useful conversions.
OneShotInstrument<T>	An Instrument that records a single value at the moment that it is constructed and always reports the same value and lastModified time.
PIDUtil	Utility to return the PID of the JVM.
ProcessReaderHelper
TestAll	Aggregates tests in dependency order.
TestCounters	Unit tests for CounterSet.
TestHistoryInstrument
XMLUtility	XML (de-)serialization of CounterSets.

Enum Summary

Enum	Description
PeriodEnum	A type-safe enumeration of the different periods at which samples may be combined within a History.

Exception Summary

Exception	Description
TimestampOrderException	Used to reject samples that arrive way out of timestamp order.

Package com.bigdata.counters Description

Package supports declaration, collection, and interchange of performance counters for both hosts and processes on supported platforms. These data are used to support load balancing and service alerts.