package org.apache.jcs.auxiliary.disk.indexed;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import junit.framework.TestCase;
import org.apache.jcs.JCS;
/**
* Put a few hundred thousand entries in the disk cache.
*
* @author Aaron Smuts
*
*/
public class HugeQuantityIndDiskCacheLoadTest
extends TestCase
{
/**
* Test setup
*/
public void setUp()
{
JCS.setConfigFilename( "/TestDiskCacheHuge.ccf" );
}
/**
* Adds items to cache, gets them, and removes them. The item count is more
* than the size of the memory cache, so items should spool to disk.
*
* @param region
* Name of the region to access
*
* @exception Exception
* If an error occurs
*/
public void testLargeNumberOfItems()
throws Exception
{
int items = 300000;
String region = "testCache1";
JCS jcs = JCS.getInstance( region );
try
{
System.out.println( "Start: " + measureMemoryUse() );
// Add items to cache
for ( int i = 0; i <= items; i++ )
{
jcs.put( i + ":key", region + " data " + i );
}
System.out.println( jcs.getStats() );
System.out.println( "--------------------------" );
System.out.println( "After put: " + measureMemoryUse() );
Thread.sleep( 5000 );
System.out.println( jcs.getStats() );
System.out.println( "--------------------------" );
System.out.println( "After wait: " + measureMemoryUse() );
// Test that all items are in cache
for ( int i = 0; i <= items; i++ )
{
String value = (String) jcs.get( i + ":key" );
assertEquals( region + " data " + i, value );
}
System.out.println( "After get: " + measureMemoryUse() );
// // Remove all the items
// for ( int i = 0; i <= items; i++ )
// {
// jcs.remove( i + ":key" );
// }
//
// // Verify removal
// for ( int i = 0; i <= items; i++ )
// {
// assertNull( "Removed key should be null: " + i + ":key" + "\n
// stats " + jcs.getStats(), jcs.get( i + ":key" ) );
// }
}
finally
{
// dump the stats to the report
System.out.println( jcs.getStats() );
System.out.println( "--------------------------" );
System.out.println( "End: " + measureMemoryUse() );
}
}
/**
* Measure memory used by the VM.
*
* @return
* @throws InterruptedException
*/
protected long measureMemoryUse()
throws InterruptedException
{
System.gc();
Thread.sleep( 3000 );
System.gc();
return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
}
}