Package org.apache.cassandra.io.util

Class SsdDiskOptimizationStrategy

java.lang.Object

org.apache.cassandra.io.util.SsdDiskOptimizationStrategy

All Implemented Interfaces:

DiskOptimizationStrategy

public class SsdDiskOptimizationStrategy
extends Object
implements DiskOptimizationStrategy

Field Summary

Fields inherited from interface org.apache.cassandra.io.util.DiskOptimizationStrategy

MAX_BUFFER_SIZE, MIN_BUFFER_SIZE, MIN_BUFFER_SIZE_MASK

Constructor Summary

Constructors

Constructor	Description
SsdDiskOptimizationStrategy(double diskOptimizationPageCrossChance)

Method Summary

Modifier and Type	Method	Description
int	bufferSize(long recordSize)	For solid state disks only add one page if the chance of crossing to the next page is more than a predifined value.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cassandra.io.util.DiskOptimizationStrategy

roundBufferSize

Constructor Details

SsdDiskOptimizationStrategy

public SsdDiskOptimizationStrategy(double diskOptimizationPageCrossChance)

Method Details

bufferSize

public int bufferSize(long recordSize)

For solid state disks only add one page if the chance of crossing to the next page is more than a predifined value.

Specified by:

bufferSize in interface DiskOptimizationStrategy

Parameters:

recordSize - record size

Returns:

the buffer size for a given record size.

See Also:

• Config.disk_optimization_page_cross_chance