1 package org.apache.commons.jcs3.auxiliary.disk.indexed;
2
3 import org.apache.commons.jcs3.JCS;
4 import org.apache.commons.jcs3.access.CacheAccess;
5
6 /*
7 * Licensed to the Apache Software Foundation (ASF) under one
8 * or more contributor license agreements. See the NOTICE file
9 * distributed with this work for additional information
10 * regarding copyright ownership. The ASF licenses this file
11 * to you under the Apache License, Version 2.0 (the
12 * "License"); you may not use this file except in compliance
13 * with the License. You may obtain a copy of the License at
14 *
15 * http://www.apache.org/licenses/LICENSE-2.0
16 *
17 * Unless required by applicable law or agreed to in writing,
18 * software distributed under the License is distributed on an
19 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
20 * KIND, either express or implied. See the License for the
21 * specific language governing permissions and limitations
22 * under the License.
23 */
24
25 import junit.framework.TestCase;
26
27 /**
28 * Put a few hundred thousand entries in the disk cache.
29 */
30 public class HugeQuantityIndDiskCacheLoadTest
31 extends TestCase
32 {
33 /** Test setup. */
34 @Override
35 public void setUp()
36 {
37 JCS.setConfigFilename( "/TestDiskCacheHuge.ccf" );
38 }
39
40 /**
41 * Adds items to cache, gets them, and removes them. The item count is more than the size of the
42 * memory cache, so items should spool to disk.
43 * <p>
44 * @throws Exception If an error occurs
45 */
46 public void testLargeNumberOfItems()
47 throws Exception
48 {
49 final int items = 300000;
50 final String region = "testCache1";
51
52 final CacheAccess<String, String> jcs = JCS.getInstance( region );
53
54 try
55 {
56 System.out.println( "Start: " + measureMemoryUse() );
57
58 // Add items to cache
59
60 for ( int i = 0; i <= items; i++ )
61 {
62 jcs.put( i + ":key", region + " data " + i );
63 }
64
65 System.out.println( jcs.getStats() );
66 System.out.println( "--------------------------" );
67 System.out.println( "After put: " + measureMemoryUse() );
68
69 Thread.sleep( 5000 );
70
71 System.out.println( jcs.getStats() );
72 System.out.println( "--------------------------" );
73 System.out.println( "After wait: " + measureMemoryUse() );
74
75 // Test that all items are in cache
76
77 for ( int i = 0; i <= items; i++ )
78 {
79 final String value = jcs.get( i + ":key" );
80
81 assertEquals( region + " data " + i, value );
82 }
83
84 System.out.println( "After get: " + measureMemoryUse() );
85
86 // // Remove all the items
87 // for ( int i = 0; i <= items; i++ )
88 // {
89 // jcs.remove( i + ":key" );
90 // }
91 //
92 // // Verify removal
93 // for ( int i = 0; i <= items; i++ )
94 // {
95 // assertNull( "Removed key should be null: " + i + ":key" + "\n
96 // stats " + jcs.getStats(), jcs.get( i + ":key" ) );
97 // }
98
99 }
100 finally
101 {
102 // dump the stats to the report
103 System.out.println( jcs.getStats() );
104 System.out.println( "--------------------------" );
105 System.out.println( "End: " + measureMemoryUse() );
106 }
107 }
108
109 /**
110 * Measure memory used by the VM.
111 * <p>
112 * @return memory used
113 * @throws InterruptedException
114 */
115 protected long measureMemoryUse()
116 throws InterruptedException
117 {
118 System.gc();
119 Thread.sleep( 3000 );
120 System.gc();
121 return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
122 }
123 }