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copied!<p>Do you understand the purpose of TIME_WAIT? It's a period during which it would be unsafe to reuse the port because lost packets (that have been successfully retransmitted) from the previous transaction might yet be delivered within that time period.</p> <p>You could probably tweak it down in the registry somewhere, but I question if this is a sensible next step.</p> <p>My experience of creating realistic load in a test environment have proved very frustrating. Certainly running your load-tester from localhost is by no means realistic, and most network tests I have made using the .net http apis seem to require more grunt in the client than the server itself.</p> <p>As such, it's better to move to a second machine for generating load on your server... however domestic routing equipment is rarely up to the job of supporting anywhere near the number of connections that would cause any sort of load on a well written server app, so now you need to upgrade your routing/switching equipment as well!</p> <p>Lastly, I've had some really strange and unexpected performance issues around the .net Http client API. At the end of the day, they all use HttpWebRequest to do the heavy lifting. IMO it's nowhere near as performant as it could be. DNS is sychronous, even when calling the APIs asynchronously (although if you're only requesting from a single host, this isn't an issue), and after sustained usage CPU usage creeps up until the client becomes CPU constrained rather than IO constrained. If you're looking to generate sustained and heavy load, any request-heavy app reliant on HttpWebRequest is IMO a bogus investment.</p> <p>All in all, a pretty tricky job, and ultimately, something that can only be proved in the wild, unless you've got plently of cash to spend on an armada of better equipment.</p> <p>[Hint: I got much better perfomance from my own client written using async Socket apis and a 3rd party DNS client library]</p>

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