Mercurial > hg > blitz_stable

annotate src/org/dancres/blitz/remote/nio/StressClient.java @ 32:243c74d599bf

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author Dan Creswell <dan.creswell@gmail.com>
date Sat, 12 Jun 2010 10:41:47 +0100
parents 3dc0c5604566
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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0
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1 package org.dancres.blitz.remote.nio;
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2
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3 import java.io.IOException;
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4 import java.util.Random;
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5 import java.rmi.RMISecurityManager;
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6 import java.net.InetSocketAddress;
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7
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8 import net.jini.core.lease.Lease;
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9 import net.jini.core.entry.Entry;
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10 import net.jini.space.JavaSpace;
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11
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12 import org.dancres.blitz.remote.test.DummyEntry;
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13 import org.dancres.blitz.mangler.EntryMangler;
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14
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15 /**
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16 */
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17 public class StressClient {
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18 private Invoker _invoker;
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19 private static Stresser[] _beaters;
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20
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21 StressClient(InetSocketAddress anAddr) throws IOException {
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22 _invoker = new Invoker(anAddr, true);
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23 }
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24
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25 void test(boolean doLoad, int aNumBeaters, int aPoolSize, int aPause,
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26 boolean isDebug) {
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27 try {
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28 if (doLoad) {
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29 System.out.println("Filling:");
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30 for (int i = 0; i < aPoolSize; i++) {
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31 System.out.print(".");
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32 Integer myValue = new Integer(i);
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33
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34 Entry myEntry =
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35 new DummyEntry(myValue.toString());
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36
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37 _invoker.write(EntryMangler.getMangler().mangle(myEntry),
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38 null, Lease.FOREVER);
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39 }
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40 System.out.println();
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41 }
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42
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43 Random myRNG = new Random();
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44 _beaters = new Stresser[aNumBeaters];
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45
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46 for (int i = 0; i < aNumBeaters; i++) {
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47 _beaters[i] = new Stresser(_invoker, aPoolSize,
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48 aPause, isDebug);
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49
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50 Thread myThread = new Thread(_beaters[i]);
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51 myThread.setName(Integer.toString(i));
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52 myThread.start();
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53
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54 try {
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55 Thread.sleep((long) myRNG.nextInt(500));
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56 } catch (InterruptedException anIE) {
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57 }
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58 }
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59
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60 } catch (Exception anE) {
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61 System.err.println("Rdv error");
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62 anE.printStackTrace(System.err);
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63 System.exit(0);
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64 }
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65 }
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66
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67 public void run() {
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68 }
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69
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70 private static class Watcher extends Thread {
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71 private Stresser[] theBeaters;
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72
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73 Watcher(Stresser[] aBeaters) {
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74 theBeaters = aBeaters;
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75 setDaemon(true);
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76 }
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77
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78 public void run() {
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79 while (true) {
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80 try {
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81 Thread.sleep(60 * 1000);
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82 } catch (InterruptedException anIE) {
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83 System.err.println("Awoken early!");
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84 }
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85
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86 for (int i = 0; i < theBeaters.length; i++) {
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87 System.out.println("Beater: " + i + "," + theBeaters[i].getStats());
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88 }
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89 }
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90 }
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91 }
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92
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93 private class Stresser implements Runnable {
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94 private Invoker _invoker;
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95 private Random theRNG = new Random();
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96 private int thePoolSize;
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97 private long thePause;
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98 private boolean isDebug;
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99
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100 /*
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101 Statistics gathered up by Watcher
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102 */
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103 private long theTxns;
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104
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105 Stresser(Invoker anInvoker, int aPoolSize,
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106 long aPause, boolean debug) {
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107 _invoker = anInvoker;
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108 thePoolSize = aPoolSize;
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109 thePause = aPause;
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110 isDebug = debug;
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111 }
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112
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113 String getStats() {
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114 StringBuffer myStats = new StringBuffer();
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115
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116 synchronized(this) {
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117 myStats.append(" Txns:");
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118 myStats.append(Long.toString(theTxns));
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119 theTxns = 0;
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120 }
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121
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122 return myStats.toString();
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123 }
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124
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125 /**
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126 @todo Should test the take for != null and only write in that case.
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127 */
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128 public void run() {
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129 long myNextTxnId = 0;
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130
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131 while(true) {
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132 try {
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133 Integer myValue =
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134 new Integer(theRNG.nextInt(thePoolSize));
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135
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136 Entry myTemplate = new DummyEntry(myValue.toString());
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137
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138 Entry myResult = take(myTemplate, thePause);
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139
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140 if (myResult != null)
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141 _invoker.write(EntryMangler.getMangler().mangle(myTemplate)
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142 , null, Lease.FOREVER);
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143
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144 synchronized(this) {
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145 ++theTxns;
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146 }
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147
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148 if (isDebug) {
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149 synchronized(System.out) {
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150 System.out.print(getId() + "W");
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151 }
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152 }
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153 } catch (Throwable aThrowable) {
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154 System.err.println("Stresser got exception");
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155 aThrowable.printStackTrace(System.err);
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156 break;
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157 }
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158 }
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159 }
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160
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161 private Entry take(Entry aTemplate,
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162 long aTimeout)
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163 throws Exception {
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164
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165 Entry myResult = _invoker.take(EntryMangler.getMangler().mangle(aTemplate),
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166 null, aTimeout);
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167
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168 if (isDebug) {
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169 synchronized(System.out) {
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170 if (myResult != null) {
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171 System.out.print(getId() + "T");
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172 } else {
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173 System.out.print(getId() + "|**|");
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174 }
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175 }
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176 }
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177 return myResult;
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178 }
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179
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180 private String getId() {
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181 return Thread.currentThread().getName();
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182 }
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183 }
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184
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185 public static void main(String anArgs[]) {
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186 if (anArgs.length != 5) {
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187 System.err.println("Usage: Stress <addr> <port> <threads> <pool_size> <timeout>");
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188 System.exit(-1);
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189 }
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190
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191 try {
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192 System.setSecurityManager(new RMISecurityManager());
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193 new StressClient(new InetSocketAddress(anArgs[0],
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194 Integer.parseInt(anArgs[1]))).test(Boolean.getBoolean("load"),
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195 Integer.parseInt(anArgs[2]),
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196 Integer.parseInt(anArgs[3]),
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197 Integer.parseInt(anArgs[4]),
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198 Boolean.getBoolean("debug"));
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199
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200 new Watcher(_beaters).start();
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201 } catch (Exception anE) {
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202 System.err.println("Stress failed");
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203 anE.printStackTrace(System.err);
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204 }
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205 }
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206 }