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Monitor replication with Performance Monitor

Applies to: SQL Server

Windows Performance Monitor allows you to:

  • Use graphs, charts, and reports to gauge the efficiency of your computer, and
  • Identify and troubleshoot possible problems (such as unbalanced resource use, insufficient hardware, or poor program design), and
  • Plan for extra hardware needs.

For more information, see Monitor Resource Usage (Performance Monitor).

Performance Monitor uses performance objects and counters, which provide information on the performance of various processes. You can measure replication performance through counters associated with the replication agents:

Agent Performance object Counter Description
All agents SQLServer:Replication Agents Running The number of replication agents currently running.
Snapshot Agent SQLServer:Replication Snapshot Snapshot:Delivered Cmds/sec The number of commands per second delivered to the Distributor.
Snapshot Agent SQLServer:Replication Snapshot Snapshot:Delivered Trans/sec The number of transactions per second delivered to the Distributor.
Log Reader Agent SQLServer:Replication Logreader Logreader:Delivered Cmds/sec The number of commands per second delivered to the Distributor.
Log Reader Agent SQLServer:Replication Logreader Logreader:Delivered Trans/sec The number of transactions per second delivered to the Distributor.
Log Reader Agent SQLServer:Replication Logreader Logreader:Delivery Latency The current amount of time (in milliseconds) elapsed from when transactions are applied at the Publisher to when they're delivered to the Distributor.
Distribution Agent SQLServer:Replication Dist. Dist:Delivered Cmds/sec The number of commands per second delivered to the Subscriber.
Distribution Agent SQLServer:Replication Dist. Dist:Delivered Trans/sec The number of transactions per second delivered to the Subscriber.
Distribution Agent SQLServer:Replication Dist. Dist:Delivery Latency The current amount of time (in milliseconds) elapsed from when transactions are delivered to the Distributor to when they're applied at the Subscriber.
Merge Agent SQLServer:Replication Merge Conflicts/sec The number of conflicts per second occurring during the merge process.
Merge Agent SQLServer:Replication Merge Downloaded Changes/sec The number of rows per second replicated from the Publisher to the Subscriber.
Merge Agent SQLServer:Replication Merge Uploaded Changes/sec The number of rows per second replicated from the Subscriber to the Publisher.

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