IO_ wait types:   IO_COMPLETION

Understanding LCK_M_ Wait Types in SQL Server When it comes to diagnosing SQL Server performance issues, wait statistics are an invaluable tool. Among the many wait types you might encounter are LCK_M_ wait types. These waits are related to locking, …

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Understanding PREEMPTIVE Waits in SQL Server When working with SQL Server performance tuning, one of the common challenges is identifying and interpreting wait statistics. Waits are a vital diagnostic tool that reveals where SQL Server might be slowing down. Among …

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Usually caused by IO outside of the SQL Server in the underlying operating System. Suggestions: From Book On-Line: PAGEIOLATCH_DTOccurs when a task is waiting on a latch for a buffer that is in an I/O request. The latch request is …

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Understanding the BROKER_EVENTHANDLER Wait Event in SQL Server The BROKER_EVENTHANDLER wait event in SQL Server is generally not something that should raise immediate concerns. This wait type is specifically tied to the Service Broker, a feature within SQL Server that …

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LATCH_EX Wait

Understanding the ASYNC_NETWORK_IO Wait Type in SQL Server The ASYNC_NETWORK_IO wait type in SQL Server occurs when the server is waiting for the client application to process data before it can send more results. This wait type is usually an indication that …

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BACKUPTHREAD Wait

ASYNC_IO_COMPLETION Wait in SQL Server The ASYNC_IO_COMPLETION wait type in SQL Server occurs when the system is waiting for an asynchronous I/O operation to finish. I/O (input/output) operations involve transferring data between SQL Server and the underlying storage, such as …

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Understanding the BACKUPBUFFER Wait Type in SQL Server When running backups in SQL Server, you might come across a wait type known as BACKUPBUFFER. This particular wait occurs when SQL Server is waiting for data to be written to a …

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