Here the most important performance counters and their thresholds is critical to establishing a performance baseline and monitoring plan to proactively monitor your Exchange 2010 environment and troubleshoot and resolve issues when they arise
back to Performance and Threshold Counters for Exchange Server 2010 - All in One
Client Access Server Counters for Determining Load
| MSExchange ActiveSync\Requests/sec | Not applicable |
| Shows the number of HTTP requests that are received from the client via ASP.NET per second. | |
| Determines the current Exchange ActiveSync request rate. | |
| MSExchange ActiveSync\Ping Commands Pending | Not applicable |
| Shows the number of ping commands that are currently pending in the queue. | |
| Determines current ping commands pending in the queue. | |
| MSExchange ActiveSync\Requests/sec | Not applicable |
| Shows the number of HTTP requests that are received from the client via ASP.NET per second. | |
| Stats Only to determine current user load. | |
| MSExchange ActiveSync\Sync Commands/sec | Not applicable |
| Shows the number of Sync commands that are processed per second. Clients use this command to synchronize items within a folder. | |
| Stats Only to determine current user load. | |
| MSExchange Availability Service\Availability Requests (sec) | Not applicable |
| Shows the number of requests serviced per second. The request can be only for free/busy or include suggestions. One request may contain multiple mailboxes. | |
| Determines the rate at which Availability service requests are occurring. | |
| MSExchange OWA\Current Unique Users | Not applicable |
| Shows the number of unique users currently logged on to Outlook Web Access. This value monitors the number of unique active user sessions, so that users are only removed from this counter after they log off or their session times out. | |
| Determines current user load. | |
| MSExchange OWA\Requests/sec | Not applicable |
| Shows the number of requests handled by Outlook Web Access per second. | |
| Determines current user load. | |
| MSExchangeAutodiscover\Requests/sec | Not applicable |
| Shows the number of Autodiscover service requests that have been processed each second. | |
| Determines current user load. | |
| MSExchangeWS\Requests/sec | Not applicable |
| Shows the number of requests processed each second. | |
| Determines current user load. | |
| Web Service(_Total)\Current Connections | Not applicable |
| Shows the current number of connections established with the Web service. | |
| Determines current user load. | |
| WebService(_Total)\Connection Attempts/sec | Not applicable |
| Shows the rate that connections to the Web service are being attempted. | |
| Determines current user load. | |
| Web Service(_Total)\ISAPI Extension Requests/sec | Not applicable |
| Shows the rate that Internet Server API (ISAPI) extension requests are received by the Web service. | |
| Outlook Anywhere clients make use of this ISAPI extension for RPC over HTTP requests on servers running the Windows Server 2003 operating system. For Windows Server 2008 counters, see "RPC/HTTP Proxy Counters (Windows Server 2008 Only)" later in this topic. | |
| Determines current user load. | |
| Web Service(_Total)\Other Request Methods/sec | Not applicable |
| Shows the rate HTTP requests are made that do not use the OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE, MOVE, COPY, MKCOL, PROPFIND, PROPPATCH, SEARCH, LOCK or UNLOCK methods. | |
| Determines current user load. | |
Microsoft Exchange Control Panel
| MSExchange Control Panel\ASP.Net Request Failures/sec | |
| ASP.Net Request Failures/sec is the number of failures per second detected by ASP.Net in the Exchange Control Panel. | |
| MSExchange Control Panel\Explicit Sign-On Inbound Proxy Requests/sec | |
| Explicit Sign-On Inbound Proxy Requests/sec is the number of Explicit Sign-On requests received from a primary Client Access server per second. | |
| MSExchange Control Panel\Explicit Sign-On Inbound Proxy Sessions/sec | |
| Explicit Sign-On Inbound Proxy Sessions/sec is the number of Explicit Sign-On Inbound Proxy sessions that are loaded per second in the Exchange Control Panel. | |
| MSExchange Control Panel\Explicit Sign-On Outbound Proxy Requests/sec | |
| Explicit Sign-On Outbound Proxy Requests/sec is the number of Explicit Sign-On requests sent to a secondary Client Access server per second. | |
| MSExchange Control Panel\Explicit Sign-On Outbound Session Requests/sec | |
| Explicit Sign-On Outbound Proxy Sessions/sec is the number of Explicit Sign-On Outbound Proxy sessions that are loaded per second in the Exchange Control Panel. | |
| MSExchange Control Panel\Explicit Sign-On Standard RBAC Requests/sec | |
| Explicit Sign-On Standard RBAC Requests/sec is the number of requests received per second by an Explicit Sign-On Standard RBAC session. | |
| MSExchange Control Panel\Explicit Sign-On Standard RBAC Sessions/sec | |
| Explicit Sign-On Standard RBAC Sessions/sec is the number of Explicit Sign-On Standard RBAC sessions that are loaded per second in the Exchange Control Panel. | |
| MSExchange Control Panel\Inbound Proxy Requests/sec | |
| Inbound Proxy Requests/sec is the number of requests received from a primary Client Access server per second. | |
| MSExchange Control Panel\Inbound Proxy Sessions/sec | |
| Inbound Proxy Sessions/sec is the number of Inbound Proxy sessions that are loaded per second in the Exchange Control Panel. | |
| MSExchange Control Panel\Outbound Proxy Requests - Average Response Time | Under 6000ms |
| Outbound Proxy Requests - Average Response Time is the average time (in milliseconds) that requests sent to a secondary Client Access server took to complete during the sampling period. | |
| MSExchange Control Panel\Outbound Proxy Requests/sec | |
| Outbound Proxy Requests/sec is the number of requests sent to a secondary Client Access server per second. | |
| MSExchange Control Panel\Outbound Proxy Sessions/sec | |
| Outbound Proxy Sessions/sec is the number of Outbound Proxy sessions that are loaded per second in the Exchange Control Panel. | |
| MSExchange Control Panel\PowerShell Runspaces - Activations/sec | |
| PowerShell Runspaces - Activations/sec is the number of Windows PowerShell runspaces that are activated per second in the Exchange Control Panel. | |
| MSExchange Control Panel\PowerShell Runspaces - Average Active Time | |
| PowerShell Runspaces - Average Active Time is the average time (in seconds) that a Windows PowerShell runspace stays active while executing cmdlets in the Exchange Control Panel during the sampling period. | |
| MSExchange Control Panel\PowerShell Runspaces/sec | |
| PowerShell Runspaces/sec is the number of Windows PowerShell runspaces that are created per second in the Exchange Control Panel. | |
| MSExchange Control Panel\RBAC Sessions/sec | |
| RBAC Sessions/sec is the number of RBAC sessions that are loaded per second in the Exchange Control Panel. | |
| MSExchange Control Panel\Requests - Activations/sec | |
| Requests - Activations/sec is the number of requests that are activated per second in the Exchange Control Panel. | |
| MSExchange Control Panel\Requests - Average Response Time | Under 6000ms |
| Requests - Average Response Time is the average time (in milliseconds) the Exchange Control Panel took to respond to a request during the sampling period. |
Avalability Service Counters
| MSExchange Availability Service\Availability Requests (sec) | Not applicable |
| Shows the number of requests serviced per second. The request can be only for free/busy or include suggestions. One request may contain multiple mailboxes. | |
| Determines the rate at which Availability service requests are occurring. |
RPC Client Access Counters
| MSExchange RpcClientAccess\Active User Count | |
| Active User Count is the number of unique users that have shown some activity in the last 2 minutes. | |
| MSExchange RpcClientAccess\Connection Count | |
| Connection Count is the total number of client connections maintained. | |
| MSExchange RpcClientAccess\RPC Operations/sec | |
| RPC Operations/sec is the rate at which RPC operations occur, per second. | |
| MSExchange RpcClientAccess\User Count | |
| User Count is the number of users that are connected to the service. |
Microsoft Exchange Address Book Service
| MSExchangeAB\NSPI Connections Current | |
| NSPI Connections Current is the number of NSPI clients that are currently connected to the server. | |
| MSExchangeAB\NSPI Connections/sec | |
| NSPI Connections/sec is the number of NSPI client connections that are established to the server each second. | |
| MSExchangeAB\NSPI RPC Requests/sec | |
| NSPI RPC Requests/sec is the rate at which NSPI requests occur each second. | |
| MSExchangeAB\Referral RPC Requests/sec | |
| Referral RPC Requests/sec is the rate at which referral requests occur each second. |
RPC/HTTP Proxy Counters (Windows Server 2008 Only)
| RPC/HTTP Proxy\Current Number of Incoming RPC over HTTP Connections | Not applicable |
| Shows the current number of front-end HTTP connections. | |
| Determines current user load. | |
| RPC/HTTP Proxy\Current Number of Unique Users | Not applicable |
| Shows the number of unique users currently connected to a back-end server via RPC/HTTP. | |
| Determines current user load. | |
| RPC/HTTP Proxy\RPC/HTTP Requests per Second | Not applicable |
| Shows the rate of RPC/HTTP requests sent to the back-end servers. | |
| Determines current Outlook Anywhere load. |
-Dario
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