When you install the FTP Server from the Internet Information Server, four new objects are added to the existing list of objects in Windows NT Performance Monitor. This article describes an object called Internet Information Server which contains 10 counters.

Performance Monitor is a graphical tool for measuring the performance of your own computer or other computers on a network. On each computer, you can view the behavior of objects such as processors, memory, cache, threads, and processes. Each of these objects has an associated set of counters that provide information on such things as device usage, queue lengths, and delays, as well as information used for throughput and internal congestion measurements. It provides charting, alerting, and reporting capabilities that reflect current activity along with ongoing logging. You can also open log files at a later time for browsing and charting as if they were reflecting current activity.

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The definitions of the counters under the Performance Monitor object Internet Information Server are given below:

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Cache Flushes

Cache Flushes is the number of times a portion of the memory cache has been expired due to file or directory changes in an Internet Information Services directory tree.

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Cache Hits

Cache Hits is the total number of times a file open, directory listing, or service specific objects request is found in the cache.

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Cache Hits %

Cache Hits % is the ratio of cache hits to all cache requests.

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Cache Misses

Cache Misses is the total number of times a file open, directory listing or service specific objects request was not found in the cache.

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Cache Size

Cache Size is the configured maximum size of the shared HTTP, FTP, and Gopher memory cache.

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Cache Used

Cache Used is the total number of bytes currently containing cached data in the shared memory cache. This includes directory listings, file handle tracking and service specific objects.

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Cached File Handles

Cached File Handles is the number of open file handles cached by all of the Internet Information Services.

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Current Async I/O Requests

Current Async I/O Requests is the number of current async I/O requests blocked by bandwidth throttler.

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Directory Listings

Directory Listings is the number of cached directory listings cached by all of the Internet Information Services.

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Measured Async I/O Bandwidth Usage

Measured Bandwidth of Async I/O is the number of measured bandwidth of async I/O averaged over a minute.

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Objects

Objects is the number of cached objects cached by all of the Internet Information Services. The objects include file handle tracking objects, directory listing objects and service specific objects.

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Total Allowed Async I/O Requests

Total Allowed Async I/O Requests is the number of Total Async I/O Requests allowed by Bandwidth Throttler.

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Total Blocked Async I/O Requests

Total Blocked Async I/O Requests is the number of total async I/O requests blocked by Bandwidth Throttler.

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Total Rejected Async I/O Requests

Total Rejected Async I/O Requests is the number of total async I/O requests rejected by Bandwidth Throttler.

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