Class CMD_optimize

java.lang.Object

io.nosqlbench.nb.api.components.core.NBBaseComponentMetrics

io.nosqlbench.nb.api.components.core.NBBaseComponent

io.nosqlbench.engine.core.lifecycle.scenario.execution.NBInvokableCommand

io.nosqlbench.engine.core.lifecycle.scenario.execution.NBBaseCommand

io.nosqlbench.scenarios.simframe.optimizers.CMD_optimize

All Implemented Interfaces:

NBComponent, NBComponentAdvisors, NBComponentEvents, NBComponentMetrics, NBComponentProps, NBComponentServices, NBComponentTimeline, NBProviderSearch, NBTokenWords, NBLabeledElement, AutoCloseable, BiFunction<NBBufferedContainer,NBCommandParams,Object>

public class CMD_optimize
extends NBBaseCommand

This is the Java-native version of findmax on the NB5.21 architecture. It has been modified from the previous form in significant ways.

• Instead of pass/fail criteria all performance factors are expressed as a value function. This will make it easy to adapt different search algorithms (in the form of non-derivative multivariate optimizers) to the same approach.
• A set of simulation frame utilities bundles the derivation of black-box values. These will be used to refine findmax, but will be general-purposed for any other analysis and optimization method as needed.
• The search strategy which determines the parameters for the next simulation frame has been factored out into a planner.

There is an accompanying visual narrative "findmax.png" bundled with this source code to help explain the search pattern of findmax. Additional docs and a usage guide will follow.

This can be tested as

nb5 --show-stacktraces java io.nosqlbench.scenarios.findmax.SC_findmax threads=36

Nested Class Summary

Nested classes/interfaces inherited from interface io.nosqlbench.nb.api.labels.NBLabeledElement

NBLabeledElement.BasicLabeledElement

Field Summary

Fields inherited from class io.nosqlbench.nb.api.components.core.NBBaseComponent

bufferOrphanedMetrics, closed_ns, error, errored_ns, labels, metricsBuffer, parent, started_epoch_ms, started_ns, state, teardown_ns

Fields inherited from interface io.nosqlbench.nb.api.components.core.NBComponent

EMPTY_COMPONENT

Fields inherited from interface io.nosqlbench.nb.api.components.core.NBComponentProps

HDRDIGITS, SUMMARY

Fields inherited from interface io.nosqlbench.nb.api.labels.NBLabeledElement

EMPTY

Constructor Summary

Constructors

Constructor	Description
CMD_optimize(NBBufferedContainer parentComponent, String scenarioName, String context)

Method Summary

Modifier and Type	Method	Description
Object	invoke(NBCommandParams params, PrintWriter stdout, PrintWriter stderr, Reader stdin, ContainerActivitiesController controller)

Methods inherited from class io.nosqlbench.engine.core.lifecycle.scenario.execution.NBBaseCommand

apply, getScenarioName, getTargetScenario, toString

Methods inherited from class io.nosqlbench.engine.core.lifecycle.scenario.execution.NBInvokableCommand

invokeSafe

Methods inherited from class io.nosqlbench.nb.api.components.core.NBBaseComponent

addAdvisor, addMetricsCloseable, attachChild, beforeDetach, close, create, detachChild, find, findParentService, getAdvisors, getChildren, getComponentOnlyLabels, getComponentProp, getComponentState, getLabels, getNanosSinceStart, getParent, getTokens, nanosof_close, nanosof_error, nanosof_start, nanosof_teardown, onError, onEvent, reportExecutionMetric, setComponentProp, started_epoch_ms, teardown

Methods inherited from class io.nosqlbench.nb.api.components.core.NBBaseComponentMetrics

addComponentMetric, addListener, findComponentMetrics, findComponentMetrics, getComponentMetric, getComponentMetrics, removeListener

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.function.BiFunction

andThen

Methods inherited from interface io.nosqlbench.nb.api.components.core.NBComponentAdvisors

getAdvisorResults

Methods inherited from interface io.nosqlbench.nb.api.components.core.NBComponentMetrics

addComponentMetric, findComponentMetrics, findComponentMetrics, findOneComponentMetric, findOneComponentMetric, getComponentMetric, getComponentMetrics

Methods inherited from interface io.nosqlbench.nb.api.labels.NBLabeledElement

description

Constructor Details

CMD_optimize

public CMD_optimize(NBBufferedContainer parentComponent,
 String scenarioName,
 String context)

Method Details

invoke

public Object invoke(NBCommandParams params,
 PrintWriter stdout,
 PrintWriter stderr,
 Reader stdin,
 ContainerActivitiesController controller)

Specified by:

invoke in class NBBaseCommand