WebИнтересно. Вы возможно обнаружили что-то не опубликованное о внутреннем поведении SQL-Server. Вы упомянули, что когда запускаете запрос без sp_executesql что он крутится с типом ожидания CXPACKET.... WebJul 4, 2012 · This update adds support for the MAXDOP option for the CREATE STATISTICS and UPDATE STATISTICS statements in Microsoft SQL Server 2016 and 2024. This enables you to override the default setting for max degree of parallelism (MAXDOP) that's specified at the database or server level. Note: The resulting degree of parallelism is capped by the ...
Configure the max degree of parallelism (MAXDOP)
WebNov 13, 2012 · What you could do is set MAXDOP to 1 during the normal operational hours, then set it to 8 in your maintenance window and switch it back to 1 after its completed. … WebMay 8, 2024 · MAXDOP of Confusion (Dear SQL DBA Episode 8) (Kendra Little) Five SQL Server Settings to Change (BrentOzar.com) What MAXDOP setting should be used for SQL Server (MSSQLTips) hugh ryan books
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WebMay 16, 2024 · Starting with SQL Server 2016 (13.x), use the following guidelines when you configure the max degree of parallelism server configuration value: Server with single NUMA node [and] Less than or equal to 8 logical processors: Keep MAXDOP at or below # of logical processors. I don’t understand this guidance at all. WebDec 19, 2012 · The Max Degree of Parallelism or MAXDOP is a configuration indicating how the SQL Server optimizer will use the CPUs. This will run the query much faster. When SQL Server uses parallelism, it runs slower. This is a server wide configuration that by default uses all of the CPUs to have the available portions of the query executed in parallel. WebDec 21, 2016 · 1. At the server level with SSMS. In SSMS, right-click on the server, click Properties, Advanced, scroll down into the Parallelism section, and set MAXDOP to 1. Click OK. (Be aware that this blows your plan cache instantly.) 2. At the server level with sp_configure. Just the command level version of the above, with the same side effect: hugh ryden