Some, but not that much. Switching PostgreSQL to a threaded model will not magically make spawning connections fast. PostgreSQL connections are quite heavyweight.
The reason to use threads is almost entirely about ease of development, not about performance. If you use shrared memory like PostgreSQL does you need to write your own allocators, etc. So much you get for free if you use threads.
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Some, but not that much. Switching PostgreSQL to a threaded model will not magically make spawning connections fast. PostgreSQL connections are quite heavyweight.
The reason to use threads is almost entirely about ease of development, not about performance. If you use shrared memory like PostgreSQL does you need to write your own allocators, etc. So much you get for free if you use threads.