There's no way it's creating 32k threads on start up. That's the default max. Threads aren't totally cheap so they alloc a lot less. Asp.net allocates more. Use

There's no way it's creating 32k threads on start up. That's the default max. Threads aren't totally cheap so they alloc a lot less. Asp.net allocates more. Used to be 25 or 50 per CPU.