The commands below are helpful when troubleshooting and could be beneficial when designing for scalability. They can easily be scripted and logged for data analysis.
Current Anonymous Users – the number of anonymous IIS users
Current Non-Anonymous Users – the number of authorized IIS users
Current Connections – total number of active connections on the IIS server
The following may be used to display a list of every Web Service performance counters currently available:
(Get-Counter -ListSet’Web Service’).counter
PS C:\> (Get-Counter -ListSet 'Web Service').counter \Web Service(*)\Total Bytes Sent \Web Service(*)\Bytes Sent/sec \Web Service(*)\Total Bytes Received \Web Service(*)\Bytes Received/sec \Web Service(*)\Total Bytes Transferred \Web Service(*)\Bytes Total/sec \Web Service(*)\Total Files Sent \Web Service(*)\Files Sent/sec \Web Service(*)\Total Files Received \Web Service(*)\Files Received/sec \Web Service(*)\Total Files Transferred \Web Service(*)\Files/sec \Web Service(*)\Current Anonymous Users \Web Service(*)\Current NonAnonymous Users \Web Service(*)\Total Anonymous Users \Web Service(*)\Anonymous Users/sec \Web Service(*)\Total NonAnonymous Users \Web Service(*)\NonAnonymous Users/sec \Web Service(*)\Maximum Anonymous Users \Web Service(*)\Maximum NonAnonymous Users \Web Service(*)\Current Connections \Web Service(*)\Maximum Connections \Web Service(*)\Total Connection Attempts (all instances) \Web Service(*)\Connection Attempts/sec \Web Service(*)\Total Logon Attempts \Web Service(*)\Logon Attempts/sec \Web Service(*)\Total Options Requests \Web Service(*)\Options Requests/sec \Web Service(*)\Total Get Requests \Web Service(*)\Get Requests/sec \Web Service(*)\Total Post Requests \Web Service(*)\Post Requests/sec \Web Service(*)\Total Head Requests \Web Service(*)\Head Requests/sec \Web Service(*)\Total Put Requests \Web Service(*)\Put Requests/sec \Web Service(*)\Total Delete Requests \Web Service(*)\Delete Requests/sec \Web Service(*)\Total Trace Requests \Web Service(*)\Trace Requests/sec \Web Service(*)\Total Move Requests \Web Service(*)\Move Requests/sec \Web Service(*)\Total Copy Requests \Web Service(*)\Copy Requests/sec \Web Service(*)\Total Mkcol Requests \Web Service(*)\Mkcol Requests/sec \Web Service(*)\Total Propfind Requests \Web Service(*)\Propfind Requests/sec \Web Service(*)\Total Proppatch Requests \Web Service(*)\Proppatch Requests/sec \Web Service(*)\Total Search Requests \Web Service(*)\Search Requests/sec \Web Service(*)\Total Lock Requests \Web Service(*)\Lock Requests/sec \Web Service(*)\Total Unlock Requests \Web Service(*)\Unlock Requests/sec \Web Service(*)\Total Other Request Methods \Web Service(*)\Other Request Methods/sec \Web Service(*)\Total Method Requests \Web Service(*)\Total Method Requests/sec \Web Service(*)\Total CGI Requests \Web Service(*)\CGI Requests/sec \Web Service(*)\Total ISAPI Extension Requests \Web Service(*)\ISAPI Extension Requests/sec \Web Service(*)\Total Not Found Errors \Web Service(*)\Not Found Errors/sec \Web Service(*)\Total Locked Errors \Web Service(*)\Locked Errors/sec \Web Service(*)\Current CGI Requests \Web Service(*)\Current ISAPI Extension Requests \Web Service(*)\Maximum CGI Requests \Web Service(*)\Maximum ISAPI Extension Requests \Web Service(*)\Current CAL count for authenticated users \Web Service(*)\Maximum CAL count for authenticated users \Web Service(*)\Total count of failed CAL requests for authenticated users \Web Service(*)\Current CAL count for SSL connections \Web Service(*)\Maximum CAL count for SSL connections \Web Service(*)\Total count of failed CAL requests for SSL connections \Web Service(*)\Total Blocked Async I/O Requests \Web Service(*)\Total Allowed Async I/O Requests \Web Service(*)\Total Rejected Async I/O Requests \Web Service(*)\Current Blocked Async I/O Requests \Web Service(*)\Measured Async I/O Bandwidth Usage \Web Service(*)\Total blocked bandwidth bytes. \Web Service(*)\Current blocked bandwidth bytes. \Web Service(*)\Service Uptime
Use this command to find out how many connections are now active on the IIS server (the counter Web Service(*)Current Connections):
Get-Counter -Counter “\Web Service(*)\Current Connections”
PS C:\> Get-Counter -Counter “\Web Service(*)\Current Connections” Timestamp CounterSamples --------- -------------- 8/4/2022 10:52:10 AM \\cordero-web1\web service(_total)\current connections : 6 \\cordero-web1\web service(accounting)\current connections : 6 \\cordero-web1\web service(hr)\current connections : 0
You may take advantage of the environment variable COMPUTERNAME to avoid having to give the server name each time:
Get-Counter “web service(Site1)\current connections” -ComputerName$env:COMPUTERNAME
With the Get-IISSite and Get-Website cmdlets, you may learn more about Internet Information Services (IIS) websites, including their current status and other vital details. With the Get-IISAppPool cmdlet, you can learn more about application pools, their current state, and other vital details.
Get-IISSite
Get-Website
Get-IISAppPool
PS C:\> Get-IISSite
Name ID State Physical Path Bindings
---- -- ----- ------------- --------
accounting 1 Started C:\inetpub\websites\accounting http *:80:accounting.cordero.me
https *:443:accounting.cordero.me
hr 2 Started C:\inetpub\websites\hr http *:80:hr.cordero.me
https *:443:hr.cordero.me
PS C:\> Get-Website
Name ID State Physical Path Bindings
---- -- ----- ------------- --------
accounting 1 Started C:\inetpub\websites\accounting http *:80:accounting.cordero.me
https *:443:accounting.cordero.me
hr 2 Started C:\inetpub\websites\hr http *:80:hr.cordero.me
https *:443:hr.cordero.me
PS C:\> Get-IISAppPool
Name Status CLR Ver Pipeline Mode Start Mode
---- ------ ------- ------------- ----------
AcountingWeb Started v4.0 Integrated OnDemand
HRWeb Started v4.0 Integrated OnDemand