## Appendix A Performance considerations

This section discusses performance when using PolyORB. Many elements can be configured, See Building an application with PolyORB. By carefully selecting them, you can increase the throughput of your application.

We review some parameters that can impact performance.

- Build options:
  - For production use, you should not build PolyORB with debug activated.
- Tasking policies:
  - You should carefully select the tasking policy to reduce dynamic ressource allocation (tasks, entry points, etc.). See Tasking model in PolyORB.
- Transport parameters:
  - Setting `tcp.nodelay` to false will disable Nagle buffering.
- GIOP parameters:
  - Setting `polyorb.protocols.iiop.giop.1.X.locate_then_request`, where `X` is the GIOP version in use, to false will disable `Locate_Message`, reducing the number of requests exchanged,
  - Increasing `polyorb.protocols.iiop.giop.1.X.max_message_size`, where `X` is the GIOP version in use, will reduce GIOP fragmentation, reducing middleware processing.