> > Can you add a hook to tune the write buffer size per pipe? (with an fcntl
> > or the like)
> I'll think about it.
> Unfortunately, Linux guarantees that it can send 4096 bytes in one
> atomic operation, and such an fcntl could violate that.
The requirement for atomicity comes from the POSIX and Unix API. Nothing
in the API prohibits changing the size by calls not in the API. I think its
silly to add stuff like that however. Pipe is optimised for pure speed,
AF_UNIX sockets can do the variable buffering already
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