1.  2 Demand Technology Software, Inc. 4 th Annual Windows Technology Symposium Monday, December 9, 2002 Demand Technology Software A division of Datacore Software, Inc. 1020 Eighth Avenue South, Suite 6, Naples, FL 34102 phone: (941) 261-8945 fax: (941) 261-5456 e-mail: markf@demandtech.com http://www.demandtech.com

2.  Demand Technology, Inc. Windows Technology Symposium – CMG 2002 2 Windows Technology Symposium Agenda Announcements  NTSMF Version 2.4.4  Performance Gallery version f DemandTech Online:  www.demandtech.comwww.demandtech.com Other CMG events of interest

3.  Demand Technology, Inc. Windows Technology Symposium – CMG 2002 3 Agenda

4.  Demand Technology, Inc. Windows Technology Symposium – CMG 2002 4 Announcements NTSMF Version 2.4.4  Module identification data  Additional activity-based Filters  Compute Win2K disk counters: disk utilization, service time, queue time Upgrade to Performance Gallery version f  Multiple system reporting  Desktop bug is fixed!  New report templates

5.  Demand Technology, Inc. Windows Technology Symposium – CMG 2002 5 Announcements Under Development  Version 2.4.5 maintenance release  File system collector Currently, only runs standalone  ISAPI filter Interval counters for web application response time – Averages and distributions, by application  Lotus Notes component Ntsmf.nsf, engineered by Dr. Bucky Pope  Real-time Alerts (version 3.0)  Microsoft Operations Manager (MOM) support

6.  Demand Technology, Inc. Windows Technology Symposium – CMG 2002 6 Vendor session Wednesday evening More details on our development plans will be available at the Wednesday evening session:  Teton 1 Room  Mezzanine level  5:30 – 6:30 pm

7.  Demand Technology, Inc. Windows Technology Symposium – CMG 2002 7 Wednesday Sessions.Net – What it is and What does it Mean to Enterprise Computing  Bernie Domanski, CUNY  Wednesday 10:30 Monitoring NT Performance  Jerry Rosenberg, SRM Associates  Wednesday 1:30 An Introduction to the Infiniband Architecture  Odysseas Pentakalos, SYSNET  Wednesday 4:15

8.  Demand Technology, Inc. Windows Technology Symposium – CMG 2002 8 Thursday Sessions Measuring the Performance & Scalability of Business Logic Components, Matsumoto & Chaudhry, Xtremesoft & Microsoft  Thursday 8:30.Net Server: An Overview,  Odysseas Pentakalos, SYSNET  Thursday 1:30

9.  Demand Technology, Inc. Windows Technology Symposium – CMG 2002 9 Thursday Sessions Scaling Resilient Storage Networks,  Greg Schultz, inRange  Thursday 2:45 The Role of IT Metrics in IT Strategy,  Sid Finehirsh, CMX Group  Thursday 2:45 Sizing Exchange 2000 Server based on Exchange 5.5 workloads  Syed & Sheetz, BMC  Thursday 4:15 pm

10.  Demand Technology, Inc. Windows Technology Symposium – CMG 2002 10 Friday Sessions Interpreting NT Queue Length Measurements,  Yiping, Bolker & Yefim, BMC Software  Friday 9:45 am Interpreting SQL Server 2000 Performance Counters  Jeff Schwartz, Unisys  Friday 9:45 am The performance of Web services applications  Mark Friedman, DemandTech  Friday 9:45 am

11.  Demand Technology, Inc. Windows Technology Symposium – CMG 2002 11 Friday Sessions  Interpreting NT Queue Length Measurements, Yiping, Bolker & Yefim, BMC Software Friday 9:45 am Research questions the validity of the System:Processor Queue Length Counter  At low utilization, the Processor Queue Length can be a relatively high number

12.  Demand Technology, Inc. Windows Technology Symposium – CMG 2002 12 Interpreting NT Queue Length Measurements The validity of the System:Processor Queue Length Counter  At low utilization, the observed Processor Queue Length can be a relatively high number  Instantaneous Counter (i.e., sampled value)  Application of Heisenberg Uncertainty Principle: measurement tool can get in the way of the measurement data e.g., dmperfss collection thread always observed in the Running state

13.  Demand Technology, Inc. Windows Technology Symposium – CMG 2002 13 The validity of the System:Processor Queue Length Counter

14.  Demand Technology, Inc. Windows Technology Symposium – CMG 2002 14 The validity of the System:Processor Queue Length Counter

15.  Demand Technology, Inc. Windows Technology Symposium – CMG 2002 15 The validity of the System:Processor Queue Length Counter

16.  Demand Technology, Inc. Windows Technology Symposium – CMG 2002 16 The validity of the System:Processor Queue Length Counter Possible low utilization effect Redesign the thread dispatching logic in NTSMF 2.2.5 to reduce the impact of the threaded collector  Currently, in versions 2.2.3 and 2.2.4, all collection threads (one per Perflib DLL) are dispatched at one time  In version 2.2.5, collection threads will be dispatched in sequence

17.  Demand Technology, Inc. Windows Technology Symposium – CMG 2002 17 The validity of the System:Processor Queue Length Counter But usually the data is consistent with theory…

18.  Demand Technology, Inc. Windows Technology Symposium – CMG 2002 18 Questions ?