Package mondrian.util

Class MemoryMonitorTest

java.lang.Object

TestCase

mondrian.test.FoodMartTestCase

mondrian.util.MemoryMonitorTest

public class MemoryMonitorTest
extends FoodMartTestCase

Test case for ObjectPool.

Author:

Richard Emberson

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	MemoryMonitorTest.TestMM
static class	MemoryMonitorTest.TestMM2

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	enabled
(package private) static int	PERCENT_100

Fields inherited from class mondrian.test.FoodMartTestCase

propSaver

Constructor Summary

Constructors

Constructor	Description
MemoryMonitorTest()
MemoryMonitorTest(String name)

Method Summary

Modifier and Type	Method	Description
void	_testQuery()	Run this by itself and it works across 2 orders of magnitude.
boolean	causeGC(MemoryMonitor mm)	Get the difference between the maximum memory and the used memory and divide that by 1000.
protected static int	convertThresholdToPercentage(long threshold, long maxMemory)
protected void	setUp()
protected void	tearDown()
void	testDeltaUsage()

Methods inherited from class mondrian.test.FoodMartTestCase

allMember, assertAxisReturns, assertAxisThrows, assertBooleanExprReturns, assertExprReturns, assertExprThrows, assertQueriesReturnSimilarResults, assertQueryReturns, assertQueryThrows, assertSize, cubeByName, execute, executeExpr, executeQuery, executeSingletonAxis, genderMembersIncludingAll, getConnection, getDimensionWithName, getTestContext, isDefaultNullMemberRepresentation, isGroupingSetsSupported, member, productMembersPotScrubbersPotsAndPans, storeMembersCAAndOR, storeMembersUsaAndCanada, verifySameNativeAndNot, warehouseMembersCanadaMexicoUsa

Methods inherited from class java.lang.Object

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

Field Detail

PERCENT_100

static final int PERCENT_100

See Also:

Constant Field Values

enabled

protected boolean enabled

Constructor Detail

MemoryMonitorTest

public MemoryMonitorTest()

MemoryMonitorTest

public MemoryMonitorTest(String name)

Method Detail

convertThresholdToPercentage

protected static int convertThresholdToPercentage(long threshold,
                                                  long maxMemory)

causeGC

public boolean causeGC(MemoryMonitor mm)

Get the difference between the maximum memory and the used memory and divide that by 1000. This is the size of allocation chunks. Keep allocating chunks until an OutOfMemoryError is created.

setUp

protected void setUp()
              throws Exception

Throws:

Exception

tearDown

protected void tearDown()
                 throws Exception

Overrides:

tearDown in class FoodMartTestCase

Throws:

Exception

testDeltaUsage

public void testDeltaUsage()
                    throws Exception

Throws:

Exception

_testQuery

public void _testQuery()
                throws Exception

Run this by itself and it works across 2 orders of magnitude. Run it with other tests and its hard to pick the right values for the percentage and how much to allocate for it to always work.

Throws:

Exception