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How to Modify .NET CLR Settings

To update the number of Windows threads available in the .NET thread pool associated with an instance of a BizTalk host, you can modify the appropriate Common Runtime Language (CLR) Hosting values using the BizTalk Settings Dashboard. This topic provides the step-by-step procedure to modify these settings.

To perform this operation, you must be logged on as a member of the BizTalk Server Administrators group.

  1. In the BizTalk Server Administration Console, expand BizTalk Server Administration, right-click BizTalk Group, and then click Settings.

  2. In the BizTalk Settings Dashboard dialog box, on the Host Instance tab, click the .NET CLR tab.

  3. Do the following and click Apply to apply the modifications and proceed to another tab. Or click OK to apply the modifications and exit the Settings Dashboard.

     

    Use this To do this Boundary values Default value Upgrade logic

    Host Instance

    From the drop-down box, select the running instance of a host on the BizTalk Server runtime machine.

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    -

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    Threading Settings

    Max. worker threads

    Specify the maximum number of .NET CLR worker threads.

    [Min worker threads, 500]

    25

    Migrate the host instance registry settings to host instance settings, ignore Version, Flavor, Flags, and MinCompletionPortThreads.

    Min. worker threads

    Specify the minimum number of .NET CLR worker threads.

    [0, 500]

    5

    Migrate the host instance registry settings to host instance settings, ignore Version, Flavor, Flags, and MinCompletionPortThreads.

    Max. IO threads

    Specify the maximum number of IO threads.

    [Min IO threads, 1000]

    250

    Migrate the host instance registry settings to host instance settings, ignore Version, Flavor, Flags, and MinCompletionPortThreads.

    Min. IO threads

    Specify the minimum number of IO threads.

    [0, 1000]

    25

    Migrate the host instance registry settings to host instance settings, ignore Version, Flavor, Flags, and MinCompletionPortThreads.

    .NET CLR Settings are per-core CPU.

    noteNote
    To restore the default settings, click Restore Defaults.

    noteNote
    Worker threads are used to handle queued work items and I/O threads are dedicated callback threads associated with an I/O completion port to handle a completed asynchronous I/O request.

    noteNote
    If BizTalk is upgraded from a previous version, the values in the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BTSSvc$hostname\CLR Hosting registry key will be set in Settings Dashboard.

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