Counter Descriptions

Current Blocked Async I/O Requests Current number of requests that are temporarily blocked by the bandwidth throttle setting. Blocked requests are held in a buffer and then unblocked if more bandwidth becomes available, unless a timeout limit is reached.

Measured Async I/O Bandwidth usage The number of bytes received and sent by your Web server, averaged over one minute. This is a measure of the total amount of user traffic on your server.

Total Allowed Async I/O Requests The number of user requests allowed by the Web and FTP services since service startup. When you throttle bandwidth, the number of allowed user requests will be restricted.

Total Blocked Async I/O Requests The total number of requests that have been temporarily blocked by the bandwidth throttle setting since service startup. Blocked requests are held in a buffer and then unblocked if more bandwidth becomes available, unless a timeout limit is reached.

Total Rejected Async I/O Requests The total number of user requests rejected (because of bandwidth settings) since service startup. When a request is rejected, it is not held in a buffer, unlike a blocked request.

Bytes Received/sec Rate at which data bytes are received by the service at the Application Layer; does not include protocol headers or control bytes.

Bytes Sent/sec Rate at which data bytes are sent by the service.

Bytes Total/sec Rate of total bytes/sec transferred by the Web service (sum of bytes sent/sec and bytes received/sec).

Files/sec Rate of files transferred by server since startup of the Web service.

Files Received/sec Rate of files received by (uploaded to) the Web service since the service started.

Files Sent/sec Rate of files sent by (downloaded from) the Web service since the service started.

Total Files Received The total number of files received by the Web service since the service started.

Total Files Sent The total number of files sent by the Web service since the service started.

Total Files Transferred The total number of files transferred by the Web service since the service started. Total Files Transferred is the sum of Files Sent plus Files Received.

CGI Requests/sec The rate of CGI requests that are simultaneously being processed by the Web service.

Current CGI Requests Current number of CGI requests simultaneously being processed by the service.

Current ISAPI Extension Requests Current ISAPI extension requests simultaneously being processed by the service.

Delete Requests/sec The rate HTTP requests using the DELETE method are made.

Get Requests/sec The rate of HTTP requests using the GET method. GET requests are generally used for basic file retrievals or image maps, though they can be used with forms.

Head Requests/sec The rate HTTP requests using the HEAD method are made. HEAD requests generally indicate a client is querying the state of a document they already have to see if it needs to be refreshed.

ISAPI Extension Requests/sec The rate of ISAPI Extension requests that are simultaneously being processed by the Web service.

Maximum CGI Requests Largest number of CGI requests simultaneously processed by the service since service startup.

Maximum ISAPI Extension Requests Largest number of ISAPI extension requests simultaneously processed by the service since service startup.

Not Found Errors/sec The rate of errors due to requests that couldn't be satisfied by the server because the requested document could not be found. These are generally reported to the client with HTTP error code 404.

Other Request Methods/sec The rate at which HTTP requests are made that do not use the GET, POST, PUT, DELETE, TRACE or HEAD methods. These may include LINK or other methods supported by gateway applications.

Post Requests/sec Rate of HTTP requests using POST method; generally used for forms or gateway requests.

Put Requests/sec The rate HTTP requests using the PUT method are made.

Total CGI Requests The total number of Common Gateway Interface (CGI) requests executed since service startup. CGI requests are custom gateway executables (.exe files) the administrator can install to add forms processing or other dynamic data sources. CGI requests spawn a process on the server which can be a large drain on server resources.

Total Delete Requests The number of HTTP requests using the DELETE method.

Total Get Requests Total number of HTTP GET requests received by the service; GET requests are generally used for basic file retrievals or image maps, though they can be used with forms.

Total Head Requests Total number of HTTP HEAD requests received by the service. HEAD requests typically indicate that a client is querying the state of a document they already have to see if it needs to be refreshed.

Total ISAPI Extension Requests Total number of HTTP ISAPI extension requests received by the service. ISAPI Extension Requests are custom gateway dynamic-link libraries (DLLs), which the administrator can install to add forms processing or other dynamic data sources.

Total Method Requests The number of total HTTP GET, POST, PUT, DELETE, TRACE, HEAD and other method requests.

Total Method Requests/sec The rate HTTP requests using GET, POST, PUT, DELETE, TRACE or HEAD methods are made.

Total Not Found Errors Number of requests that could not be satisfied by the Web service because requested document could not be found; typically reported as HTTP 404 error code to client.

Total Other Request Methods The number of HTTP requests that are not GET, POST, PUT, DELETE, TRACE or HEAD methods. These may include LINK or other methods supported by gateway applications.

Total Post Requests The number of HTTP requests using the POST method. Post requests are generally used for forms or gateway requests.

Total Put Requests The number of HTTP requests using the PUT method.

Total Trace Requests The number of HTTP requests using the TRACE method.

Trace Requests/sec The rate of HTTP requests using the TRACE method are made.

Anonymous Users/sec The rate users are making anonymous connections using the Web service.

Connection Attempts/sec The rate that connections using the Web service are being attempted. the count is the average for all Web sites combined, regardless of what you choose for Instance.

Current Anonymous Users The number of users who currently have an anonymous connection using the Web or FTP service. If a client request for an anonymous connection is rejected and the client responds with valid authenticating data, the connection is counted as non-anonymous.

Current Connections The current number of connections established with the Web or FTP service (sum of anonymous and non-anonymous users). The count is the current total for all Web sites or all FTP sites combined, regardless of what you choose for Instance.

Current NonAnonymous Users The number of users who currently have a non-anonymous connection using the Web or FTP service. If a client request for an anonymous connection is rejected and the client responds with valid authenticating data, the connection is counted as non-anonymous.

Maximum Anonymous Users The maximum number of users who established concurrent anonymous connections using the Web or FTP service (since service startup).

Maximum Connections The largest number of simultaneous connections established with the Web or FTP service since service startup. The count is the maximum for all Web sites or FTP sites combined, regardless of what you choose for Instance.

Maximum NonAnonymous Users The maximum number of users who established concurrent non-anonymous connections using the Web or FTP service (since service startup). If a client request for an anonymous connection is rejected and the client responds with valid authenticating data, the connection is counted as non-anonymous.

Total Anonymous Users The total number of users who established an anonymous connection with the Web or FTP service (since service startup). If a client request for an anonymous connection is rejected and the client responds with valid authenticating data, the connection is counted as non-anonymous.

Total Connection Attempts The total number of connections to the Web or FTP service that have been attempted since service startup. The count is the total for all Web sites or FTP sites combined, regardless of what you choose for Instance.
This number does not include connection attempts that failed at the TCP (transport) or IP (network) layer. To monitor all connection attempts, use the Connection counters on the TCP performance object; for information about obtaining and viewing this object, see the Windows 2000 Resource Kits. To monitor currently active connections, use Current Connections.

Total Logon Attempts The total number of successful logons to the Web or FTP service since the service started; does not include failed logon attempts. To calculate failed attempts (where clients were able to connect but not log on), subtract Logon Attempts from Connection Attempts.

Total NonAnonymous Users The total number of users who established a non-anonymous connection with the Web or FTP service (since service startup). If a client request for an anonymous connection is rejected and the client responds with valid authenticating data, the connection is counted as non-anonymous.

Cache Flushes Total number of times since service startup that cache has been flushed.

Cache Hits Total number of times since service startup a file-open, directory-listing, or service-specific object's request was found in the IIS cache.

Cache Hits % Ratio of cache hits to all cache requests.

Cache Misses Total number of times since service startup a file-open, directory-listing, or service-specific object's request was not found in the cache.

Cached File Handles Current number of open file handles cached by all Internet Information Server services.

Directory Listings Current number of cached directory listings cached by all Internet Information Server services.

Objects Current number of objects cached by all of Internet Information Server services (includes file-handle tracking objects, directory-listing objects, and service-specific objects).

Debugging Requests The number of debugging document requests.

Errors During Script Runtime The number of requests failed due to runtime errors.

Errors From ASP Preprocessor The number of requests failed due to preprocessor errors.

Errors From Script Compiler The total number of requests that failed due to script compilation errors.

Errors/Sec The number of errors per second.

Request Bytes In Total The total size, in bytes, of all requests.

Request Bytes Out Total The total size, in bytes, of all responses sent to clients.This does not include the standard HTTP response headers.

Request Execution Time The number of milliseconds that it took to execute the most recent request.

Request Wait Time The number of milliseconds the most recent request was waiting in the queue.

Requests Disconnected The number of requests that were disconnected due to communications failure.

Requests Executing The number of requests currently executing.

Requests Failed Total The total number of requests failed due to errors, authorization failure, and rejections.

Requests Not Authorized The number of requests failed due to insufficient access rights.

Requests Not Found The number of requests for files that were not found.

Requests Queued The number of requests waiting for service from the queue.

Requests Rejected The total number of requests not executed because there were insufficient resources to process them.

Requests Succeeded The number of requests that executed successfully.

Requests Timed Out The number of requests that timed out.

Requests Total The total number of requests since the service was started.

Requests/Sec The number of requests executed per second.

Session Duration The number of milliseconds that the most recent session persisted.

Sessions Current The number of sessions being serviced.

Sessions Timed Out The number of sessions timed out.

Sessions Total The total number of sessions since the service was started.

Transactions Aborted The number of transactions aborted.

Transactions Committed The number of transactions committed.

Transactions Pending The number of transactions in progress.

Transactions Total The total number of transactions since the service was started.

Transactions/Sec The number of transactions started per second.

Memory Allocated The total amount of memory, in bytes, currently allocated by Active Server Pages.

Script Engines Cached The number of script engines in cache.

Templates Cached The number of templates currently cached.

Template Cache Hit Rate The percentage of requests found in template cache.

Template Notifications The number of templates invalidated in the cache due to change notification.

Service Uptime The number of seconds the service or the instance has been running. This number returns to zero when the server or instance is stopped. Pause does not affect this counter.


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