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DOCS-14391 add replWriterMinThreadCount param #5611

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Jul 23, 2021
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DOCS-14391 add replWriterMinThreadCount param #5611

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33 changes: 31 additions & 2 deletions source/reference/parameters.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -1848,11 +1848,40 @@ Replication Parameters

|mongod-only|

Number of threads to use to apply replicated operations in parallel.
Values can range from 1 to 256 inclusive. You can only set
Maximum number of threads to use to apply replicated operations in
parallel. Values can range from 1 to 256 inclusive. You can only set
:parameter:`replWriterThreadCount` at startup and cannot change this
setting with the :dbcommand:`setParameter` command.

.. seealso::

:parameter:`replWriterMinThreadCount`

.. parameter:: replWriterMinThreadCount

.. versionadded:: 4.2.15 (and 4.4.7)

*Type*: integer

*Default*: 0

|mongod-only|

Minimum number of threads to use to apply replicated operations in
parallel. Values can range from 0 to 256 inclusive. You can only set
:parameter:`replWriterMinThreadCount` at startup and cannot change
this setting with the :dbcommand:`setParameter` command.

Parallel application of replication operations uses up to
:parameter:`replWriterThreadCount` threads. If
:parameter:`replWriterMinThreadCount` is configured with a value
less than :parameter:`replWriterThreadCount`, the thread pool will
timeout idle threads until the total count of threads in the thread
pool is equal to :parameter:`replWriterMinThreadCount`.

:parameter:`replWriterMinThreadCount` must be configured with a value
that is less than or equal to :parameter:`replWriterThreadCount`.

.. parameter:: rollbackTimeLimitSecs

*Type*: 64-bit integer
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