Performance and Threshold Counters for Exchange Server 2010 - Transport Server

Good morning!!
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

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Transport Disk Counters

 

Logical/Physical Disk(*)\Avg. Disk sec/Read	Should be less than 20 milliseconds (ms) on average.
Shows the average time, in seconds, of a read of data from the disk.	Spikes (maximum values) should not be higher than 50 ms.
Logical/Physical Disk(*)\Avg. Disk sec/Write	Should be less than 20 ms on average.
Shows the average time, in seconds, of a write of data to the disk.	Spikes (maximum values) should not be higher than 50 ms.

Transport Queue Length Counters

\MSExchangeTransport Queues(_total)\Aggregate Delivery Queue Length (All Queues)	Should be less than 3,000 and not more than 5,000.
Shows the number of messages queued for delivery in all queues.
\MSExchangeTransport Queues(_total)\Active Remote Delivery Queue Length	Should be less than 250 at all times.
Shows the number of messages in the active remote delivery queues.
\MSExchangeTransport Queues(_total)\Active Mailbox Delivery Queue Length	Should be less than 250 at all times.
Shows the number of messages in the active mailbox queues.
\MSExchangeTransport Queues(_total)\Submission Queue Length	Should not exceed 100.
Shows the number of messages in the submission queue.	If sustained high values are occurring, investigate Active Directory and Mailbox servers for bottlenecks or performance-related issues.
\MSExchangeTransport Queues(_total)\Active Non-Smtp Delivery Queue Length	Should be less than 250 at all times.
Shows the number of messages in the Drop directory that is used by a Foreign connector.
\MSExchangeTransport Queues(_total)\Retry Mailbox Delivery Queue Length	Should be less than 100 at all times.
Shows the number of messages in a retry state attempting to deliver a message to a remote mailbox.
\MSExchangeTransport Queues(_total)\Retry Non-Smtp Delivery Queue Length	Should not exceed 100.
Shows the number of messages in a retry state in the non-Simple Mail Transfer Protocol (SMTP) gateway delivery queues.
\MSExchangeTransport Queues(_total)\Retry Remote Delivery Queue Length	Should not exceed 100.
Shows the number of messages in a retry state in the remote delivery queues.	We recommend that you check the next hop to determine the causes for queuing.
\MSExchangeTransport Queues(_total)\Unreachable Queue Length	Should not exceed 100.
Shows the number of messages in the Unreachable queue.
\MSExchangeTransport Queues(_total)\Largest Delivery Queue Length	Should be less than 200 for the Edge Transport and Hub Transport server roles.
Shows the number of messages in the largest delivery queues.
\MSExchangeTransport Queues(_total)\Poison Queue Length	Should be 0 at all times.
Shows the number of messages in the poison message queue.

Transport Database Counters

MSExchange Database ==> Instances(edgetransport/Transport Mail Database)\I/O Log Writes/sec	Not Applicable
Shows the rate of log file write operations completed.
Determines the current load. Compare values to historical baselines.
MSExchange Database ==> Instances(edgetransport/Transport Mail Database)\I/O Log Reads/sec	Not Applicable
Shows the rate of log file read operations completed.
Determines the current load. Compare values to historical baselines.
MSExchange Database ==> Instances(edgetransport/Transport Mail Database)\Log Generation Checkpoint Depth	Should be less than 1,000 at all times.
Represents the amount of work, in count of log files, that need to be redone or undone to the database files if the process fails.
MSExchange Database ==> Instances(edgetransport/Transport Mail Database)\Version buckets allocated	Should be less than 200 at all times.
Total number of version buckets allocated
Shows the default backpressure values as listed in the edgetransport.exe.config file.
Exchange 2007 release to manufacturing (RTM) version – Medium=60, High =100
Exchange 2007 SP1 version – Medium=120, High=200
For more database cache size guidance, see New maximum database cache size guidance for Exchange 2007 Hub Transport server role.
MSExchange Database ==> Instances(edgetransport/Transport Mail Database)\I/O Database Reads/sec	Not Applicable
Shows the rate of database read operations completed.
Determines the current load. Compare values to historical baselines.
MSExchange Database ==> Instances(edgetransport/Transport Mail Database)\I/O Database Writes/sec	Not Applicable
Shows the rate of database write operations completed.
Determines the current load. Compare values to historical baselines.
MSExchange Database ==> Instances(edgetransport/Transport Mail Database)\Log Record Stalls/sec	Should be less than 10 per second on average.
Shows the number of log records that cannot be added to the log buffers per second because they are full. If this counter is non-zero most of the time, the log buffer size may be a bottleneck.	Spikes (maximum values) should not be greater than 100 per second.
MSExchange Database ==> Instances(edgetransport/Transport Mail Database)\Log Threads Waiting	Should be less than 10 threads waiting on average.
Shows the number of threads waiting for their data to be written to the log to complete an update of the database. If this number is too high, the log may be a bottleneck.

Extensibility Agent Counters

MSExchange Extensibility Agents(*)\Average Agent Processing Time (sec)	Should be less than 20 at all times.
Shows the average agent processing time in seconds per event.	Sustained higher latencies may indicate a hung agent.
MSExchange Extensibility Agents(*)\Total Agent Invocations	Not Applicable
Shows the total number of invocations since the last restart.
Shows the current invocation rate.

-Dario

Counters

Threshold