Package org.apache.bookkeeper.common.util.affinity

Class CpuAffinity

java.lang.Object

org.apache.bookkeeper.common.util.affinity.CpuAffinity

public final class CpuAffinity
extends Object

Utilities for enabling thread to CPU affinity.

Method Summary

Modifier and Type	Method	Description
static void	acquireCore()	Acquire ownership of one CPU core for the current thread.

Methods inherited from class java.lang.Object

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

Method Details

acquireCore

public static void acquireCore()

Acquire ownership of one CPU core for the current thread.

Notes:

1. This method will only consider CPUs that are "isolated" by the OS. Eg: boot the kernel with isolcpus=2,3,6,7 parameter
3. This method will disable hyper-threading on the owned core
4. Once a thread successfully acquires a CPU, ownership will be retained, even if the thread exits, for as long as the JVM process is alive.