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Uneven Parallelism: Spotting Skewed Threads Behind CXPACKET Waits

December 15, 2012
Pinal Dave
SQL Performance
Execution Plan, MAXDOP, Parallel, SQL Wait Stats

Diagnose uneven parallelism by comparing CXPACKET and CXCONSUMER with per-thread row counts in plans and live query profiles.

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Setting MAXDOP and Cost Threshold Sensibly

November 16, 2010
Pinal Dave
SQL Performance
MAXDOP, Parallel, SQL CPU, SQL Performance, SQL Server Configuration

MAXDOP and cost threshold work together to shape parallel plans; inspect current values, test a change, and watch real workload effects.

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Finding Misconfigurations With One Script

September 11, 2010
Pinal Dave
SQL Tips and Tricks
Best Practices, DBA, MAXDOP, SQL Scripts, SQL Server Configuration

Finding misconfigurations With One Script checks SQL Server settings that deserve a review, with recommendations tied to workload and evidence.

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How Many CPUs SQL Server Really Uses

March 28, 2009
Pinal Dave
SQL Performance
MAXDOP, SQL CPU, SQL DMV, SQL Server, Virtualization

CPUs SQL Server really uses depend on edition, guest topology, affinity, and online schedulers; learn to see the instance’s usable capacity.

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Standard Settings for a New SQL Server Install

January 26, 2008
Pinal Dave
SQL Tips and Tricks
Best Practices, DBA, MAXDOP, SQL Server Configuration, SQL Server Installation

Review standard settings for a new SQL Server install, including memory, MAXDOP, tempdb, backups, and alerts before users depend on it.

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