1. Camel
  2. CAMEL-4531

Expose workerCount parameter of Netty NioServerSocketChannelFactory in Camel-Netty


    • Type: Improvement Improvement
    • Status: Resolved
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: 2.8.1
    • Fix Version/s: 2.8.2, 2.9.0
    • Component/s: camel-netty
    • Labels:
    • Environment:


    • Patch Info:
      Patch Available
    • Estimated Complexity:


      Camel-netty component did not implement oio model of netty, we can only use nio one, however it uses default workerCount parameter from Netty, which is cpu_core_threads*2.

      This is far from enough when the underlying app is a little bit slow, e.g. a traditional transactional application. In this situation NioWorker threads become an obvious bottle neck.

      I think that exposing workerCount is a very practical yet effective way for one to broaden the usage scenario of camel-netty in various network communication/application environment.

      I add a workerCount parameter in the configuration, one can use it in the Endpoint URL: "netty:tcp://". I leave the default value to 0 so that one can use Netty default policy by omit the param.

      I have tested the patch in a 2 core(4 Threads) machine, using 256 workers, it significantly improves the performance by 15 times, than the default parameter of only 8 workers, while CPU usage only increase 5 times.

      1. workerCount-2.9.patch
        2 kB
        edge wang
      2. workerCount.patch
        2 kB
        edge wang


        Willem Jiang made changes -
        Status Open [ 1 ] Resolved [ 5 ]
        Fix Version/s 2.8.2 [ 12317866 ]
        Fix Version/s 2.9.0 [ 12316374 ]
        Resolution Fixed [ 1 ]
        Willem Jiang made changes -
        Assignee Willem Jiang [ njiang ]
        edge wang made changes -
        Attachment workerCount-2.9.patch [ 12498608 ]
        edge wang made changes -
        Field Original Value New Value
        Attachment workerCount.patch [ 12498355 ]
        edge wang created issue -


          • Assignee:
            Willem Jiang
            edge wang
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