Tips for Tuning Your Relay Server Configuration on IIS

Tips for increasing performance of Relay Servers hosted by IIS Web server.

1. Use a separate application pool for ias_relay_server\client and ias_relay_server\server.
2. For the ias_relay_server\client application pool:
   1. Disable the request queue limit.
   2. Increase the Web garden size to 4 times the number of CPU cores.
3. For the ias_relay_server\server application pool, set the Web garden size to 1.
4. Use a 64-bit Windows OS to get past the 32-bit limits non-paged pool memory and virtual address space.
5. Monitor network performance and upgrade the network or switches if they are identified as bottlenecks.
6. Add Relay Servers to the farm.

For an overview of performance tuning for Relay Server clusters, see the following topic, Performance Tuning Considerations on IIS.

For a comprehensive guide to IIS tuning, refer to the Internet Information Services (IIS) 7.0 Resource Kit, written by Mike Volodarsky, Olga Londer, Brett Hill, Bernard Cheah, Steve Schofield, Carlos Aguilar Mares, and Kurt Meyer with the Microsoft IIS Team.

• Performance Tuning Considerations on IIS
  Many characteristics of the network environment in which Unwired Platform and Relay Servers are installed can reduce performance. Understanding what these are and which are most likely to cause problems will give you some guidance in how to approach perfomance tuning.