Performance Monitor Counters
MIB Definitions
Microsoft® Internet Information Servers exposes a rich set of service activity metrics through Performance Monitor and SNMP. These metrics (referred to as counters for Performance Monitor and as MIB variables for SNMP) show current configuration information, current activity, activity high-water marks (the largest recorded values for current activities), and total or cumulative counts of operations. Cumulative and high-water mark counters are always measured since service startup. The table below lists all counters exposed by Microsoft Internet Information Server. Counters are organized into sections for the service measured (Internet Information Server counters apply to all services).
Internet Information Server Cache Hits Total (since service startup) number of times 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 (since service startup) number of times a file-open, directory-listing, or service-specific object's request was not found in the cache
Cache Size
The configured maximum size of the shared HTTP, FTP, and Gopher memory cache
Cache Used
The current number of bytes containing cached data in the shared memory cache (this includes directory listings, file handle tracking, and service-specific objects)
Cached File Handles
The current number of open file handles cached by all of the Internet Information Server services
Current Blocked Async I/O Requests
The current number of async I/O requests blocked by bandwidth throttling
Directory Listings
The current number of cached directory listings cached by all of the Internet Information Server services
Measured Async I/O Bandwidth Usage
The measured bandwidth in bytes of async I/O averaged over one minute.
Objects
The current number of objects cached by all of the Internet Information Server services (includes file-handle tracking objects, directory-listing objects, and service-specific objects)
Total Allowed Async I/O Requests
Total (since service startup) async I/O requests allowed by bandwidth throttling
Total Blocked Async I/O Requests
Total (since service startup) async I/O requests blocked by bandwidth throttling
Total Rejected Async I/O Requests
Total (since service startup) async I/O requests rejected by bandwidth throttling
FTP Server Bytes Received/sec
The rate at which data bytes are received by the FTP server
Bytes Sent/sec
The rate at which data bytes are sent by the FTP server
Bytes Total/sec
Rate of total bytes transferred by the FTP server (sum of bytes sent and received)
Connection Attempts
Total number (since service startup) of connection attempts that have been made to the FTP Server
Current Anonymous Users
Current Number of anyonymous users currently connected to the FTP server
Current Connections
Current number of connections to the FTP server (sum of anonymous and non-anonymous users)
Current Non-anonymous Users
Number of non-anonymous users currently connected to the FTP server
Files Received
Total files received by (uploaded to) the FTP server since service startup
Files Sent
Total files sent by (downloaded from) the FTP server since service startup
Files Total
Total files transferred by the FTP server (upload and download) since service startup
Logon Attempts
The total number of logon attempts that have been made against the FTP server since service startup
Maximum Anonymous Users Largest number (since service startup) of anonymous users simultaneously connected to the FTP server
Maximum Connections
Largest number of simultaneous connections to the FTP server Maximum Non-anonymous Users Largest Number (since service startup) of non-Anonymous users simultaneously connected to the FTP server
Total Anonymous Users Total number of anonymous users that have ever connected to the FTP server since service startup
Total Non-anonymous Users Total number of non-anonymous users that have ever connected to the FTP server since service startup
Gopher Server Aborted Connections
Total number of connections aborted due to error or over-the-limit requests made to the Gopher server
Bytes Received/sec
The rate at which data bytes are received by the Gopher
Bytes Sent/sec
the rate that data bytes are sent by the Gopher server
Bytes Total/sec
Total rate at which bytes are transferred by the FTP server (sum of bytes sent and received) Connection Attempts
Total number (since service startup) of connections attempted against the Gopher service
Connnections in Error
Total number of connenctions (since service startup) that resulted in errors when processed by the Gopher server
Current Anonymous Users
Number of anyonymous users currently connected to the Gopher server
Current Connections
Number of connections to the Gopher server (sum of anonymous and non-anonymous users)
Current Non-anonymous Users
Number of non-anonymous users currently connected to the Gopher server
Directory Listings Sent
Total number of directory listsings sent by the Gopher server since service startup
Files Sent Total number of files sent by the Gopher server since service startup Gopher Plus Requests The total number of Gopher Plus requests received by the Gopher server since service startup
Logon Attempts The toal number of logon attempts made by the Gopher server since service startup Maximum Anonymous Users Maximum number of anonymous users simultaneously connected to the Gopher server since service startup
Maximum Connections
Maximum number of simultaneous connections to the Gopher server since service startup
Maximum Non-anonymous Users
The maximum number of non-anonymous users simultaneously connected to the Gopher server since service startup
Searches Sent
The total number of searches perfromed by the Gopher server since service startup
Total Anonymous Users Total number of anonymous uses that have connected to the FTP server since service startup
Total Non-anonymous Users Total number of non-anonymous users that have connected to the FTP server since service startup
HTTP Server Bytes Received/sec The rate at which data bytes are received by the HTTP server
Bytes Sent/sec The rate that data bytes are sent by the HTTP server
Bytes Total/sec Total rate of bytes transferred by the HTTP server (sum of bytes sent and received)
CGI Requests The total number of CGI requests executed since service startup; Common Gateway Interface (CGI) requests invoke custom gateway executables (.exe) which the administrator can install to add forms processing or other dynamic data sources Connection Attempts The number of connection attempts that have been made to the HTTP server Connections/sec The rate at which HTTP requests are currently being handled Current Anonymous Users The number of anyonymous users currently connected to the HTTP service
Current CGI Requests The current number of CGI requests simultaneously being prcessed by the HTTP server (includes WAIS index queries) Current Connections The cyurrent number of connections to the HTTP server (sum of anonymous and non-anonymous users)
Current ISAPI Extension Requests
The current ISAPI extension requests simultaneously being processed by the HTTP server
Current Non-anonymous Users Number of non-anonymous users currently connected to the HTTP server
Files Received The total files received by (uploaded to) the HTTP server since service startup
Files Sent The total files sent by (downloaded from) the HTTP server since service startup
Files Total The total files transferred by the HTTP server since service startup
Get Requests The total number of HTTP "GET" requests received by the HTTP server; GET requests are generally used for basic file retrievals or image maps, though they can be used with forms Head Requests The total number of HTTP "HEAD" requests received by the HTTP server; HEAD requests generally indicate that a client is querying the state of a document they already have to see if it needs to be refreshed ISAPI Extension Requests The total number of HTTP ISAPI extension requests received by the HTTP server; ISAPI Extension Requests are custom gateway Dynamic Link Libraries (.dll), which the administrator can install to add forms processing or other dynamic data sources
Logon Attempts The number of logon attempts that have been made by the HTTP server Maximum Anonymous Users The largest number of anonymous users simultaneously conected to the HTTP server since service startup
Maximum BGI Requests The largest number of BGI requests simultaneously processed by the HTTP server since service startup Maximum ISAPI Extension Requests The largest number of ISAPI extension requests simultaneously processed by the HTTP server since service startup Maximum Connections The largest number of users simultaneously conected to the HTTP server since service startup
Maximum Non-Anonymous Users The largest number of non-anonymous users simultaneously conected to the HTTP server since service startup Not Found Errors The number of requests that couldn't be satisfied by the server because the requested document could not be found; generally reported as an HTTP 404 error code to the client
Other Request Methods The number of HTTP requests that are not GET, POST, or HEAD methods; may include PUT, DELETE, LINK, or other methods suported by gateway applications
POST Requests The number of HTTP requests using the POST method; generally used for forms or gateway requests
Total Anonymous Users The total number of anonymous users that have ever connected to the HTTP server since service startup
Total Non-anonymous Users Total number of non-anonymous users that have ever connected to the HTTP server since service startup
