 2004 Demand Technology, Inc. Windows Performance Symposium Windows Performance Symposium – CMG 2004 Demand Technology 1020 Eighth Avenue South, Suite 6, Naples, FL phone: (239) fax: (239)

 Demand Technology, Inc. Windows Performance Symposium 2 Announcements Demand Tech Software is back as an independent entity  We re-purchased the company from Datacore Software, as of June 15, 2004 Product announcements (details Wed. nite)  native 64-bit version of the collector  WebRTM (response time monitor for Web applications)  Software Development Kit (SDK) -- supports.NET Framework, ADO.NET, and MS Sql Server

 Demand Technology, Inc. Windows Performance Symposium 3 Other Developments Status of Windows Server 2003 Resource Kit project (forthcoming from MS Press)  in effect, an updated version of the O’Reilly Performance Guide I learned (and documented to the extent possible) how Windows NT really works  Clock interrupt-based CPU busy measurements  How the Idle thread works  undocumented Thread Wait state reason codes  LRU memory management

 Demand Technology, Inc. Windows Performance Symposium 4 Other Developments Big iron  Several flavors of 64-bit machines removes virtual (and physical) memory constraints Note: application support is very limited  ccNUMA architectures  Virtual machine technology  WSRM  NTSMF support: Physical and Logical (HT) Processor identification Native 64-bit version required to communicate with 64-bit Perflib DLLs

 Demand Technology, Inc. Windows Performance Symposium 5 Windows Scalability Virtual memory relief  Even 32-bit applications can benefit  Large Memory Aware 32-bit applications can occupy the full 4 GB virtual address space when you run a 64-bit OS  Native 64-bit application can benefit much more SQL Server and IIS version 6.0, only at this point MS support for application development on 64-bit machines is still limited! – Cross compiler only; no native Visual Studio

 Demand Technology, Inc. Windows Performance Symposium 6 Windows Scalability

 Demand Technology, Inc. Windows Performance Symposium 7 Windows Scalability