Mark Wong wrote:

I've heard that simply linking to the pthreads libraries, regardless of
whether you're using them or not creates a significant overhead.  Has
anyone tried it for kicks?

That depends on the OS and the functions that are used. The typical worst case is buffered IO of single characters: The single threaded implementation is just copy and update buffer status, the multi threaded implementation contains full locking.

For most other functions there is no difference at all.

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