Under the Hood of .NET Memory Management - Simple Talk

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Classes .....................................................................................................................................117 Size of an Object ....................................................................................................................117 Delegates ................................................................................................................................ 124 Closures............................................................................................................................128 Effects of Yield ......................................................................................................................129 Arrays and Collections ......................................................................................................... 136 Excessive References ............................................................................................................ 141 Excessive Writes and Hitting the Write Barrier .............................................................. 142 Fragmentation ...................................................................................................................... 143 Long-Lived Objects .............................................................................................................. 143 Conclusion ............................................................................................................................144 Chapter 5: Application-Specific Problems ................................. 146 Introduction ..........................................................................................................................146 IIS and ASP.NET ...................................................................................................................146 Caching ............................................................................................................................147 Debug ............................................................................................................................... 152 StringBuilder ................................................................................................................... 154 ADO.NET ...............................................................................................................................155 LINQ .................................................................................................................................156 Windows Presentation Foundation (WPF) ......................................................................160 Event handlers ............................................................................................................... 160 Weak event pattern ........................................................................................................ 163 Command bindings .......................................................................................................168 Data binding ....................................................................................................................169 Windows Communication Framework ............................................................................170 Benefits ............................................................................................................................. 171 Drawbacks ....................................................................................................................... 171 Disposable ........................................................................................................................ 173 Configuration .................................................................................................................. 175 Conclusion ............................................................................................................................ 177
Section 3: Deeper .NET ....................................................178 Chapter 6: A Few More Advanced Topics ................................... 179 Introduction ..........................................................................................................................179 32-Bit vs. 64-Bit .....................................................................................................................180 Survey of Garbage Collection Flavors ............................................................................... 182 Garbage Collection Notification ........................................................................................186 Weak References ...................................................................................................................190 Marshaling .............................................................................................................................192 Conclusion ............................................................................................................................ 195 Chapter 7: The Windows Memory Model ................................... 197 .NET/OS Interaction ...........................................................................................................197 Virtual and Physical Memory .............................................................................................198 Pages ................................................................................................................................ 199 The process address space ...........................................................................................200 Memory Manager .................................................................................................................201 Using the memory manager ........................................................................................ 202 Keeping track ................................................................................................................. 202 Page Frame Database .......................................................................................................... 204 The Page Table ......................................................................................................................205 Virtual Addresses and the Page Table .............................................................................. 206 Page Table Entry .................................................................................................................. 208 Page Faults ............................................................................................................................ 208 Locking Memory ................................................................................................................. 209 Putting It All Together .........................................................................................................210 Memory Caching ...................................................................................................................211 The Long and Winding Road ............................................................................................. 212 Summary ................................................................................................................................ 212
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SQL Monitor SQL Server performance
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SQL Toolbelt The essential SQL Serv
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Brad's Sure Guide to SQL Server Mai
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