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Category: DMVs

What Are PREEMPTIVE Waits And How Can They Kill Performance

November 27, 2022 Sean Gallardy 3 Comments

Primer If you haven’t already read up on cooperative and preemptive scheduling or aren’t sure what those are, please read…

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Posted in: DMVs, Performance, SQL Server, Waits Filed under: Debugging, Demystified, Monitoring, Non-Yielding, Performance, SQL Server, Threads, Wait Types, WinDBG, Windows

Stop using Sys.dm_hadr_cluster_members for “quorum” information

May 9, 2020 Sean Gallardy 1 Comment

Update 5/24/2022: I’ve updated the DMV to reflect the various node and witness dynamic settings with a new column at…

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Posted in: DMVs, HA/DR, SQL Server Filed under: DMV, DoesntWorkLikeYoudThink, HADR, Monitoring, SQL Server, WSFC

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