DOCUMENT:Q130288 05-NOV-1999 [pcmail] TITLE :PC NTMMTA: Using Performance Monitor with MMTA PRODUCT :Microsoft Mail For PC Networks PROD/VER::3.2,3.5 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Mail Multitasking MTA for Windows NT, version 3.5 - Microsoft Mail Multitasking MTA, version 3.2 ------------------------------------------------------------------------------- SUMMARY ======= This article describes how to monitor CPU utilization in Microsoft Windows NT when you run either the Microsoft Mail Multitasking MTA for Windows NT (NT MMTA) or the Microsoft Mail Multitasking MTA for OS/2 (MMTA). MORE INFORMATION ================ If you run multiple instances of the MMTA, it may create a situation where the CPU cannot adequately service all processes running on that machine. You can detect this situation by using the Windows NT application Performance Monitor (found in the Administrative Tools group). To detect this situation, first check the %Processor Time counter. %Processor Time is expressed as a percentage of the elapsed time that a processor is busy executing a non-Idle thread. It can be viewed as the fraction of the time spent doing useful work. Each processor is assigned an Idle thread in the Idle process that consumes those unproductive processor cycles not used by any other threads. To monitor %Processor Time -------------------------- 1. Run Performance Monitor from the Administrative Tools group. 2. From the Edit menu, choose Add to Chart. 3. Select the machine that External or Dispatch is running on from the Computer option. 4. From the Object checkbox, select Process. 5. From the Counter checkbox, select %Processor Time. 6. Click Add. Then click Done. %Processor time greater than 90 percent on average can indicate that the processor is being over utilized, and it can cause problems. To further analyze this situation, it is possible to monitor an individual process' %Processor Time. Process - %Processor Time is the percentage of elapsed time that all of the threads of this process used in order for the processor to execute instructions. An instruction is the basic unit of execution in a computer; a thread is the object that executes instructions, and a process is the object created when a program is run. Code executed to handle certain hardware interrupts or trap conditions may be counted for this process. To monitor individual External and Dispatch processes ----------------------------------------------------- 1. Run Performance Monitor from the Administrative Tools group. 2. From the Edit menu, choose Add to Chart. 3. Select the machine that External or Dispatch is running on from the Computer item. 4. From the Object checkbox, select Process. 5. From the Counter checkbox, select %Processor Time. 6. From the Instance checkbox, select all the OS2 instances. 7. Click Add. Then click Done. The OS2 counter is the client side of every OS/2 application. There is an instance of OS2.EXE for each OS/2 application that is running. External will launch two processes of OS2.EXE because it is multithreaded, where Dispatch will launch only one. Also, if the machine running External and Dispatch is also running other network applications, then monitor these processes. If any one process is taking an inordinate amount of CPU time, move that process to another Windows NT machine to improve External's performance. Performance monitor might show 100 percent CPU utilization when SCHDIST.EXE is running. Schdist is running normally under Windows NT, and the Performance Monitor is giving an incorrect reading on CPU utilization. Additional query words: 3.50 process ====================================================================== Keywords : Technology : kbZNotKeyword2 kbMailSearch kbZNotKeyword3 kbMailMMTA320 kbMailMMTA350NT Version : :3.2,3.5 ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.