Microsoft Exchange Performance Counters

Microsoft Exchange Transport Server Transport Database Agent counters

The following table shows transport database counters.

Counter Name	Description
MSExchange Database ==> Instances(edgetransport/Transport Mail Database)\I/O Database Reads/sec
MSExchange Database ==> Instances(edgetransport/Transport Mail Database)\I/O Database Writes/sec	Shows the rate of database write operations completed. Determines the current load. Compare values to historical baselines.
MSExchange Database ==> Instances(edgetransport/Transport Mail Database)\I/O Log Reads/sec	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)\I/O Log Writes/sec	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)\Log Generation Checkpoint Depth	Represents the amount of work (in count of log files) that needs to be redone or undone to the database files if the process fails.
MSExchange Database ==> Instances(edgetransport/Transport Mail Database)\Log Record Stalls/sec	Shows the number of log records that can't be added to the log buffers per second because they are full. If this counter is nonzero most of the time, the log buffer size may be a bottleneck.
MSExchange Database ==> Instances(edgetransport/Transport Mail Database)\Log Threads Waiting	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.
MSExchange Database ==> Instances(edgetransport/Transport Mail Database)\Version buckets allocated	Total number of version buckets allocated. Shows the default backpressure values as listed in the edgetransport.exe.config file.