Welcome, CXCONSUMER

Erik Darling points out that CXCONSUMER is now a wait type in SQL Server:

According to Pedro’s slide, but not the ENTIRELY MISSING DOCUMENTATION, this wait is the “safe” type of parallelism wait.

It’s a good thing Pedro is a dutiful blogger, so we don’t have to pull our hair out while unfurling these mysteries.

Speaking of documentation, our new CXCONSUMER friend isn’t mentioned in Query Store Wait Stats, either.

This is a very useful addition.

Related Posts

New Diagnostics For Synchronous Statistics Updates

Joe Sack announces a new wait type and request command: Consider the following query execution scenario: You execute a SELECT query that triggers an automatic synchronous statistics update. The synchronous statistics update begins execution and your query waits (is essentially blocked) until the fresh statistics are generated. The query compilation and execution does not resume […]

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Taking Action With Wait Stats

Aaron Bertrand lays out a course of action (or inaction) when dealing with the most common wait types in SQL Server: I started going a little further than this, mapping out some of the more common wait types, and noting some of the properties they shared. Translated into questions a tuner might have about a […]

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