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How to determine if a non-IFS LSP is installed

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Enabling FILE_SKIP_COMPLETION_PORT_ON_SUCCESS on a handle associated with an I/O completion port can improve performance and reduce context switching by allowing the thread that calls the API that can complete asynchronously to handle the completion "inline" if the call can complete synchronously. This is especially useful for TCP reads when there's already data in the network stack's buffers, or writes when there is space in the buffers. Whilst there are design issues that must be taken into consideration before simply enabling this flag (beware recursion!) there's a little known issue where code outside of your control can prevent the IOCP from…
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I usually write about C++ development on Windows platforms, but I often ramble on about other less technical stuff...

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