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Copy file name to clipboardExpand all lines: docs/database-engine/configure-windows/configure-the-max-worker-threads-server-configuration-option.md
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@@ -3,7 +3,7 @@ title: "Server configuration: max worker threads"
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description: Find out how to use the max worker threads option to configure the number of worker threads that are available to SQL Server to process certain requests.
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author: rwestMSFT
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ms.author: randolphwest
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ms.date: 10/18/2024
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ms.date: 06/05/2024
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ms.service: sql
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ms.subservice: configuration
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ms.topic: conceptual
@@ -74,22 +74,26 @@ The following table shows the automatically configured number of max worker thre
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Up to [!INCLUDE [sssql16-md](../../includes/sssql16-md.md)] with Service Pack 1, the *Workers per CPU* only depend on the architecture (32-bit or 64-bit):
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| Number of logical CPUs | 32-bit computer <sup>1</sup> | 64-bit computer |
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| Number of logical CPUs | 32-bit computer <sup>†</sup> | 64-bit computer |
<sup>†</sup> Starting with [!INCLUDE [sssql16-md](../../includes/sssql16-md.md)], [!INCLUDE [ssNoVersion](../../includes/ssnoversion-md.md)] can no longer be installed on a 32-bit operating system. 32-bit computer values are listed for the assistance of customers running [!INCLUDE [ssSQL14](../../includes/sssql14-md.md)] and earlier. We recommend 1,024 as the maximum number of worker threads for an instance of [!INCLUDE [ssNoVersion](../../includes/ssnoversion-md.md)] that is running on a 32-bit computer.
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<sup>††</sup> Starting with [!INCLUDE [ssSQL17](../../includes/sssql17-md.md)], the *Default Max Workers* value is divided by 2 for machines with less than 2 GB of memory.
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Starting with [!INCLUDE [sssql16-md](../../includes/sssql16-md.md)] SP2 and [!INCLUDE [ssSQL17](../../includes/sssql17-md.md)], the *Workers per CPU* depend on the architecture and number of processors (between 4 and 64, or greater than 64):
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| Number of logical CPUs | 32-bit computer <sup>1</sup> | 64-bit computer |
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| Number of logical CPUs | 32-bit computer <sup>†</sup> | 64-bit computer |
<sup>1</sup> Starting with [!INCLUDE [sssql16-md](../../includes/sssql16-md.md)], [!INCLUDE [ssNoVersion](../../includes/ssnoversion-md.md)] can no longer be installed on a 32-bit operating system. 32-bit computer values are listed for the assistance of customers running [!INCLUDE [ssSQL14](../../includes/sssql14-md.md)] and earlier. We recommend 1,024 as the maximum number of worker threads for an instance of [!INCLUDE [ssNoVersion](../../includes/ssnoversion-md.md)] that is running on a 32-bit computer.
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<sup>†</sup> Starting with [!INCLUDE [sssql16-md](../../includes/sssql16-md.md)], [!INCLUDE [ssNoVersion](../../includes/ssnoversion-md.md)] can no longer be installed on a 32-bit operating system. 32-bit computer values are listed for the assistance of customers running [!INCLUDE [ssSQL14](../../includes/sssql14-md.md)] and earlier. We recommend 1,024 as the maximum number of worker threads for an instance of [!INCLUDE [ssNoVersion](../../includes/ssnoversion-md.md)] that is running on a 32-bit computer.
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<sup>2</sup> Starting with [!INCLUDE [ssSQL17](../../includes/sssql17-md.md)], the *Default Max Workers* value is divided by 2 for machines with less than 2 GB of memory.
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<sup>††</sup> Starting with [!INCLUDE [ssSQL17](../../includes/sssql17-md.md)], the *Default Max Workers* value is divided by 2 for machines with less than 2 GB of memory.
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> [!TIP]
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> For more information on using more than 64 logical CPUs, see [Best Practices for running SQL Server on computers that have more than 64 CPUs](../../relational-databases/thread-and-task-architecture-guide.md#best-practices-for-running-sql-server-on-computers-that-have-more-than-64-cpus).
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