---
title: "Server Properties (Processors Page) | Microsoft Docs"
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ms.date: "03/14/2017"
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---
# Server Properties - Processors Page
  Use this page to view or modify your processor options. Processor affinity settings are only enabled when more than one processor is installed.  
  
## Options  
 **Processor Affinity**  
 Assigns processors to specific threads to eliminating processor reloads and reduce thread migration across processors. For more information, see [affinity mask Server Configuration Option](../../database-engine/configure-windows/affinity-mask-server-configuration-option.md).  
  
 **I/O Affinity**  
 Binds [!INCLUDE[msCoName](../../includes/msconame-md.md)] [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] disk I/Os to a specified subset of CPUs. For more information, see [affinity Input-Output mask Server Configuration Option](../../database-engine/configure-windows/affinity-input-output-mask-server-configuration-option.md).  
  
 **Automatically set processor affinity mask for all processors**  
 Allows [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] to set the processor affinity.  
  
 **Automatically set I/O affinity mask for all processors**  
 Allows [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] to set the I/O affinity.  
  
 **Maximum worker threads**  
 0 allows [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] to dynamically set the number of worker threads. This setting is best for most systems. However, depending on your system configuration, setting this option to a specific value sometimes improves performance. For more information, see [Configure the max worker threads Server Configuration Option](../../database-engine/configure-windows/configure-the-max-worker-threads-server-configuration-option.md).  
  
 **Boost SQL Server priority**  
 Specifies whether [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] should run at a higher [!INCLUDE[msCoName](../../includes/msconame-md.md)] Windows scheduling priority than other processes on the same computer. For more information, see [Configure the priority boost Server Configuration Option](../../database-engine/configure-windows/configure-the-priority-boost-server-configuration-option.md).  
  
 **Use Windows fibers (lightweight pooling)**  
 Use Windows fibers instead of threads for the [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] service. Note that this is only available in Windows 2003 Server Edition. For more information, see [lightweight pooling Server Configuration Option](../../database-engine/configure-windows/lightweight-pooling-server-configuration-option.md).  
  
 **Configured Values**  
 Displays the configured values for the options on this pane. If you change these values, click **Running Values** to see whether the changes have taken effect. If they have not, the instance of [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] must be restarted first.  
  
 **Running Values**  
 View the currently running values for the options on this pane. These values are read-only.  
  
## See Also  
 [Server Configuration Options (SQL Server)](../../database-engine/configure-windows/server-configuration-options-sql-server.md)