For applications that rely extensively on external resources, consider enabling network gardening on multiprocessor computers

The ASP.net process model helps enable scalability on multiprocessor computers, distribute work to multiple processes (one per CPU), and each process sets the processor relationship to its CPU. This technology is called Web gardening. If your application uses a slower database server or calls a COM object with external dependencies (here are just two possibilities), it is useful to enable Web gardening for your application. However, before you decide to enable network gardening, you should test the application's performance in the Web garden.