cacheperf.gemfire.morgan

Class ScalingFcns

java.lang.Object

cacheperf.gemfire.morgan.ScalingFcns

public class ScalingFcns
extends Object

Functions to scale things.

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAXIMUM_VM_SIZE Maximum size of a VM.
static int	MINIMUM_VM_SIZE Minimum size of a VM.
static int	VM_PADDING_SIZE Amount of padding for a VM.

Constructor Summary

Constructors

Constructor and Description
ScalingFcns()

Method Summary

Modifier and Type	Method and Description
static String	scaleVmSize(int maxKeys, int dataSize, int numHosts) Returns a string containing the VM sizing parameters Xms and Xmx scaled for spreading maxKeys objects of size dataSize (in bytes) across numHosts hosts.

Methods inherited from class java.lang.Object

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

Field Detail

MINIMUM_VM_SIZE

public static final int MINIMUM_VM_SIZE

Minimum size of a VM.

See Also:

Constant Field Values

MAXIMUM_VM_SIZE

public static final int MAXIMUM_VM_SIZE

Maximum size of a VM.

See Also:

Constant Field Values

VM_PADDING_SIZE

public static final int VM_PADDING_SIZE

Amount of padding for a VM.

See Also:

Constant Field Values

Constructor Detail

ScalingFcns

public ScalingFcns()

Method Detail

scaleVmSize

public static String scaleVmSize(int maxKeys,
                                 int dataSize,
                                 int numHosts)

Returns a string containing the VM sizing parameters Xms and Xmx scaled for spreading maxKeys objects of size dataSize (in bytes) across numHosts hosts. The minimum size returned is MINIMUM_VM_SIZE megabytes. Computed sizes are padded by VM_PADDING_SIZE megabytes. An error is thrown if the value exceeds a maximum of MAXIMUM_VM_SIZE megabytes.