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-
-
- Optimizing Windows NT
-
- Measurement Tools
-
-
- 1. Overview
-
- This directory tree contains a number of tools which may be useful
- in the measurement and analysis of Windows NT computers. These
- are documented in the book "Optimizing Windows NT," and also
- briefly here.
-
-
- 2. Directory Organization
-
- There are three sub-directories: "i386" which contains the x86
- executables, "MIPS" which contains the MIPS executables, and
- "ALPHA" which contains the ALPHA executables.
-
- Depending on which platform you are on, you should add the
- corresponding directory to your path. Alternatively, you can copy
- the files from the corresponding directory into a directory on your
- path.
-
-
- 3. Measurement Tools
-
- The following sections discuss the different tools. The sections
- are listed in alphabetical order by tool name.
-
-
- 3.1. CLEARMEM
-
- CLEARMEM is used to force pages out of RAM. On Windows NT, the
- working sets are allowed to grow until memory pressure forces them
- to decline. Running CLEARMEM twice will usually force most
- applications out of memory. When CLEARMEM is run, the system will
- pause because of the flood of high priority activity. To run CLEARMEM,
- the computer's paging file must be at least as large as its RAM.
-
- Usage:
-
- clearmem
-
-
- 3.2. CTRLIST
-
- CTRLIST is used to produce a text file containing the Performance
- Monitor objects and counters together with their Explain text.
- The resulting file can be searched for rapid online access to
- counter details.
-
- Usage:
-
- ctrlist > output.fil
-
-
- 3.3. KILL
-
- KILL is a utility for stopping applications. You can name an
- application by the name of its executable or by its Process ID.
- You can determine the Process ID from TLIST or PVIEW or Performance
- Monitor. If you specify the name of the executable and more than
- one copy is running, all running copies are killed.
-
- Usage:
-
- kill { PID | progname }
-
-
- 3.4 LODCTR
-
- LODCTR is used to load new objects, counters, and explain text
- into the Registry for use by performance monitors. See Chapter
- 13 of "Optimizing Windows NT" for complete instructions on its
- use.
-
-
- 3.5. NTIMER
-
- NTIMER is used to determine how long a program runs. It shows
- Elapsed Time (ETime), time in User Mode (UTime) and time in
- Privileged Mode (KTime). These are expressed in
- hours:minutes:seconds.milliseconds. Time is actually accurate
- only to the resolution of the timer, which is 15 milliseconds
- on the x86 and 10 milliseconds on the MIPS.
-
- Usage:
-
- ntimer program.exe
-
-
- 3.6. PERFMTR
-
- PERFMTR is useful for watching a number of system performance
- numbers during system execution. You can select from a
- number of different views of the system by entering a character
- from a list presented when PERFMTR starts.
-
- Usage:
-
- perfmtr
-
-
- 3.7. PMON
-
- PMON is useful for looking at a large number of memory statistics
- while Windows NT is running. All of the information in PMON is
- available in the Performance Monitor. But PMON displays the data
- in a more tailored form.
-
- Usage:
-
- pmon
-
-
- 3.8. PVIEW
-
- PVIEW is a convenient tool for looking at processes on a Windows
- NT system.
-
- Usage:
-
- pview
-
-
- 3.9. SETEDIT
-
- SETEDIT is a tool for editing Performance Monitor chart settings
- files.
-
- SETEDIT looks just like the Windows NT Performance Monitor, but
- when you edit a legend line it permits you to type in instance
- names.
-
- SETEDIT is particularly useful for locating instances within
- Performance Monitor log files. Since you cannot select instances
- until they are alive at the start of the time window, mortal
- instances can be hard to find. You can use SETEDIT to enter the
- the case-sensitive name of the instance into a settings file.
- When Performance Monitor opens the settings file, it can then
- locate the instance automatically.
-
- Usage:
-
- setedit [setfile.pmc]
-
-
- 3.10. TLIST
-
- TLIST shows the running processes and their Process ID's.
-
- Usage:
-
- tlist
-
-
- 3.11. UNLODCTR
-
- UNLODCTR is used to remove performance monitoring objects,
- counters, and Explain text from the registry for extensible
- objects. If an object is being de-installed, its performance
- monitor support should be removed. Two successive runs of LODCTR
- without an intervening run of UNLODCTR will result in counters
- being installed that cannot easily be removed. This wastes space
- in the Registry. See Chapter 13 of "Optimizing Windows NT" for
- directions on running UNLODCTR.
-
-
- 3.12. VADUMP
-
- VADUMP can be used to look within the address space of a process.
- It shows the state and size of each segment of virtual address
- space. It can be used to make sure virtual address space is not
- over-allocated. It serves as a hard copy of some of the information
- visible in PVIEW.
-
- For technical reasons beyond our control, operation of VADUMP as
- described in Chapter 11 of "Optimizing Windows NT" is not available
- at this time. Use the Working Set Tuner. The packing list
- provided can be used to determine which data structures should be
- grouped together. Do this by listing the data structures accessed
- by the functions that are grouped together. Then reorganize your
- data to match the access patterns implied by the packing list.
-
- Usage:
-
- vadump -p PID
-
- where PID is the Process ID as indicated by TLIST.
-
-
- 3.13. WPERF
-
- WPERF is a simple performance monitor which has a different user
- interface from Performance Montior. It is preferable for some
- applications. Once you have started WPERF, you should enlarge
- the window it is using and double click on the chart surface to
- get to the menus.
-
- Usage:
-
- wperf
-
- [End of readme.txt.]