Package io.quarkus.runtime

Class ThreadPoolConfig

java.lang.Object

io.quarkus.runtime.ThreadPoolConfig

@ConfigRoot(phase=RUN_TIME)
public class ThreadPoolConfig
extends Object

The core thread pool config. This thread pool is responsible for running all blocking tasks.

Field Summary

Fields

Modifier and Type	Field	Description
int	coreThreads	The core thread pool size.
float	growthResistance	The executor growth resistance.
Duration	keepAliveTime	The amount of time a thread will stay alive with no work.
OptionalInt	maxThreads	The maximum number of threads.
boolean	prefill	Prefill core thread pool.
OptionalInt	queueSize	The queue size.
Optional<Duration>	shutdownCheckInterval	The frequency at which the status of the thread pool should be checked during shutdown.
Duration	shutdownInterrupt	The amount of time to wait for thread pool shutdown before tasks should be interrupted.
Duration	shutdownTimeout	The shutdown timeout.

Constructor Summary

Constructors

Constructor	Description
ThreadPoolConfig()

Method Summary

Modifier and Type	Method	Description
static ThreadPoolConfig	empty()

Methods inherited from class java.lang.Object

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

Field Details

coreThreads

@ConfigItem(defaultValue="1")
public int coreThreads

The core thread pool size. This number of threads will always be kept alive.

prefill

@ConfigItem(defaultValue="true")
public boolean prefill

Prefill core thread pool. The core thread pool will be initialised with the core number of threads at startup

maxThreads

@ConfigItem
public OptionalInt maxThreads

The maximum number of threads. If this is not specified then it will be automatically sized to the greatest of 8 * the number of available processors and 200. For example if there are 4 processors the max threads will be 200. If there are 48 processors it will be 384.

queueSize

@ConfigItem
public OptionalInt queueSize

The queue size. For most applications this should be unbounded

growthResistance

@ConfigItem
public float growthResistance

The executor growth resistance. A resistance factor applied after the core pool is full; values applied here will cause that fraction of submissions to create new threads when no idle thread is available. A value of 0.0f implies that threads beyond the core size should be created as aggressively as threads within it; a value of 1.0f implies that threads beyond the core size should never be created.

shutdownTimeout

@ConfigItem(defaultValue="1M")
public Duration shutdownTimeout

The shutdown timeout. If all pending work has not been completed by this time then additional threads will be spawned to attempt to finish any pending tasks, and the shutdown process will continue

shutdownInterrupt

@ConfigItem(defaultValue="10")
public Duration shutdownInterrupt

The amount of time to wait for thread pool shutdown before tasks should be interrupted. If this value is greater than or equal to the value for shutdownTimeout, then tasks will not be interrupted before the shutdown timeout occurs.

shutdownCheckInterval

@ConfigItem(defaultValue="5")
public Optional<Duration> shutdownCheckInterval

The frequency at which the status of the thread pool should be checked during shutdown. Information about waiting tasks and threads will be checked and possibly logged at this interval. Setting this key to an empty value disables the shutdown check interval.

keepAliveTime

@ConfigItem(defaultValue="30")
public Duration keepAliveTime

The amount of time a thread will stay alive with no work.

Constructor Details

ThreadPoolConfig

public ThreadPoolConfig()

Method Details

empty

public static ThreadPoolConfig empty()