Mercurial > hg > blitz_condensed
annotate src/org/dancres/blitz/remote/perf/Proxy.java @ 22:b7e52953b7a6
Add some cache/memory statistics to help spot potential exhaustion and other tuning issues.
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Fri, 28 Aug 2009 17:23:33 +0100 |
parents | 3dc0c5604566 |
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rev | line source |
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0
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1 package org.dancres.blitz.remote.perf; |
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2 |
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3 import java.io.Serializable; |
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4 |
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5 import java.rmi.RemoteException; |
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6 import java.rmi.MarshalledObject; |
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7 |
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8 import net.jini.space.JavaSpace; |
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9 |
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10 import net.jini.core.entry.Entry; |
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11 import net.jini.core.entry.UnusableEntryException; |
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12 |
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13 import net.jini.core.transaction.Transaction; |
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14 import net.jini.core.transaction.TransactionException; |
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15 |
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16 import net.jini.core.event.EventRegistration; |
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17 import net.jini.core.event.RemoteEventListener; |
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18 |
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19 import net.jini.core.lease.Lease; |
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20 |
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21 import net.jini.lookup.entry.ServiceInfo; |
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22 import net.jini.lookup.entry.Name; |
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23 |
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24 import com.sun.jini.lookup.entry.BasicServiceType; |
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25 |
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26 import net.jini.admin.Administrable; |
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27 |
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28 import java.io.IOException; |
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29 import java.io.ObjectInputStream; |
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30 import java.io.FileInputStream; |
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31 |
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32 import net.jini.id.Uuid; |
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33 import net.jini.id.ReferentUuid; |
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34 import net.jini.id.ReferentUuids; |
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35 |
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36 import org.dancres.blitz.mangler.EntryMangler; |
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37 import org.dancres.blitz.mangler.MangledEntry; |
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38 |
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39 import org.dancres.blitz.VersionInfo; |
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40 |
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41 import com.sun.jini.proxy.MarshalledWrapper; |
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42 |
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43 /** |
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44 */ |
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45 class Proxy implements Serializable { |
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46 private Server theStub; |
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47 private transient EntryMangler theMangler; |
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48 |
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49 public static void main(String anArgs[]) { |
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50 try { |
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51 String myStubFile = ServiceImpl.STUB_FILE; |
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52 |
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53 if (anArgs.length > 1) |
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54 myStubFile = anArgs[1]; |
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55 |
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56 int myThreads = 1; |
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57 |
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58 if (anArgs.length > 0) |
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59 myThreads = Integer.parseInt(anArgs[0]); |
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60 |
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61 ObjectInputStream myOIS = |
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62 new ObjectInputStream(new FileInputStream(myStubFile)); |
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63 |
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64 Server myStub = (Server) myOIS.readObject(); |
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65 |
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66 System.out.println(myStub); |
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67 |
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68 Proxy myProxy = new Proxy(myStub); |
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69 |
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70 Thrasher[] myThrashers = new Thrasher[myThreads]; |
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71 |
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72 for (int i = 0; i < myThreads; i++) { |
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73 myThrashers[i] = new Thrasher(myProxy); |
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74 myThrashers[i].start(); |
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75 } |
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76 |
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77 new Watcher(myThrashers).start(); |
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78 |
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79 } catch (Exception anE) { |
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80 System.err.println("Failed to init proxy"); |
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81 anE.printStackTrace(System.err); |
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82 } |
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83 } |
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84 |
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85 private static class Watcher extends Thread { |
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86 private Thrasher[] theThrashers; |
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87 |
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88 Watcher(Thrasher[] aThrashers) { |
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89 theThrashers = aThrashers; |
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90 } |
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91 |
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92 public void run() { |
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93 while(true) { |
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94 try { |
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95 Thread.sleep(60000); |
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96 |
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97 for (int i = 0; i < theThrashers.length; i++) { |
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98 theThrashers[i].dumpCounts(); |
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99 } |
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100 } catch (InterruptedException anIE) { |
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101 System.err.println("Dead watcher"); |
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102 } |
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103 } |
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104 } |
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105 } |
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106 |
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107 private static class Thrasher extends Thread { |
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108 private Proxy theProxy; |
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109 private long theCount; |
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110 |
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111 Thrasher(Proxy aProxy) { |
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112 theProxy = aProxy; |
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113 } |
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114 |
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115 public void run() { |
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116 while (true) { |
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117 try { |
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118 DummyEntry myPackedEntry = new DummyEntry("rhubarb"); |
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119 |
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120 theProxy.read(myPackedEntry, null, 0); |
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121 theProxy.write(myPackedEntry, null, 0); |
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122 |
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123 synchronized(this) { |
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124 ++theCount; |
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125 } |
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126 } catch (Exception anE) { |
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127 System.err.println("Thrasher died: " + anE); |
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128 } |
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129 } |
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130 } |
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131 |
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132 public void dumpCounts() { |
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133 synchronized(this) { |
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134 System.out.println("Write/read combos: " + theCount); |
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135 theCount = 0; |
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136 } |
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137 } |
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138 } |
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139 |
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140 Proxy(Server aServer) { |
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141 theStub = aServer; |
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142 } |
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143 |
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144 private synchronized EntryMangler getMangler() { |
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145 if (theMangler == null) |
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146 theMangler = new EntryMangler(); |
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147 |
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148 return theMangler; |
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149 } |
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150 |
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151 private MangledEntry packEntry(Entry anEntry) { |
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152 if (anEntry == null) |
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153 return MangledEntry.NULL_TEMPLATE; |
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154 // Is it a snapshot? |
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155 else if (anEntry instanceof MangledEntry) |
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156 return (MangledEntry) anEntry; |
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157 else |
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158 return getMangler().mangle(anEntry); |
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159 } |
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160 |
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161 public Lease write(Entry entry, Transaction txn, long lease) |
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162 throws TransactionException, RemoteException { |
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163 |
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164 return theStub.write(packEntry(entry), txn, lease); |
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165 } |
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166 |
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167 public Entry read(Entry tmpl, Transaction txn, long timeout) |
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168 throws UnusableEntryException, TransactionException, |
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169 InterruptedException, RemoteException { |
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170 |
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171 MangledEntry myResult = |
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172 theStub.read(packEntry(tmpl), txn, timeout); |
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173 |
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174 return (myResult != null) ? |
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175 getMangler().unMangle(myResult) : null; |
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176 } |
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177 |
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178 static final class SnapshotEntry implements Entry { |
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179 private MangledEntry thePackage; |
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180 |
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181 SnapshotEntry(MangledEntry aPackage) { |
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182 thePackage = aPackage; |
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183 } |
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184 |
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185 MangledEntry getPackage() { |
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186 return thePackage; |
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187 } |
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188 } |
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189 } |