The following table shows active log I/O latency requirements counters. When these values are exceeded, the client experience degrades. For example, users may experience slow system performance and message delivery delays.
|Counter Name: Database\Log Record Stalls/sec||Description: Indicates the number of log records that can't be added to the log buffers per second because the log buffers are full.|
|Counter Name: Database\Log Threads Waiting||Description: Indicates the number of threads waiting to complete an update of the database by writing their data to the log.|
|Counter Name: MSExchange Database\IO Log Writes Average Latency||Description: Indicates the average time, in ms, to write a log buffer to the active log file.|