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- DOCUMENT:Q110847 02-FEB-1994 [W_NT]
- TITLE :Avg. Disk Sec/IO Not a Physical Disk Counter
- PRODUCT :Windows NT
- PROD/VER:3.10
- OPER/SYS:WINDOWS
- KEYWORDS:ENDUSER | BUGLIST3.10
-
- --------------------------------------------------------------------------
- The information in this article applies to:
-
- - Microsoft Windows NT Advanced Server version 3.1
- --------------------------------------------------------------------------
-
- SUMMARY
- =======
-
- The term "Avg. Disk sec/IO" is incorrectly used in the Windows NT Advanced
- Server "Concepts and Planning Guide." On page 194 of the guide under the
- heading of "Checking for Excessive Paging," the phrase "Avg. Disk sec/IO"
- is referred to as a counter for the physical disk in Performance Monitor.
- No such counter exists under the heading physical disk in Performance
- Monitor.
-
- MORE INFORMATION
- ================
-
- The phrase "Avg. Disk sec/IO" is being used interchangeably with the actual
- counter label of "Avg. Disk sec/Transfer" On page 550 of the Windows NT
- Advanced Server "System Guide," this is explained. "Avg. Disk sec/IO" is
- defined there in terms of average disk-transfer times exactly as "Avg. Disk
- sec/Transfer" is defined with the "Explain" button in the Add To Chart
- dialog box of the Performance Monitor. The counter "Avg. Disk sec/IO" does
- not exist, it just takes the form of "Avg. Disk sec/Transfer."
-
- Also the formula to use for finding excessive paging is vaguely referenced
- with the phrase: "To confirm excessive paging, add together the Avg. Disk
- sec/IO (a physical disk counter) and Pages/sec counter values." The correct
- method is to add "Avg. Disk sec/Read" and "Avg. Disk sec/Write" to get the
- number for "Avg. Disk sec/IO (or Transfer)."
-
- Additional reference words: 3.10 paging file slow docerr
- KBCategory:
- KBSubCategory: docer
-
-
- =============================================================================
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- Copyright Microsoft Corporation 1994.