Parallel.Foreach spawning way too many threads

Question

The problem

Although the code about which I will talk here I wrote in F#, it is based on the .NET 4 framework, not specifically depending on any particularity of F

Answer 1

You could always use a ThreadPool.

http://msdn.microsoft.com/en-us/library/system.threading.threadpool.aspx

basically:

1. Create a thread pool
2. Set the max number of threads
3. Queue all the tasks using QueueUserWorkItem(WaitCallback)