From owner-freebsd-hackers@freebsd.org  Thu Jan  7 15:24:40 2016
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From: Malcolm Matalka <mmatalka@gmail.com>
To: freebsd-hackers@freebsd.org
Subject: Can PIPE_BUF be increased?
Date: Thu, 07 Jan 2016 15:24:35 +0000
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As far as I can tell, PIPE_BUF is 512 bytes by default.  Using getconf
and looking at the header files /usr/include.  I'm writing a program
that would benefit from a larger PIPE_BUF, is it possible to change this
value?  It looks like Linux and OS X have a higher default and OS X will
do some magic to increase the size if necessary.  I haven't found
anything indicating the same in FreeBSD.

Thanks,
/Malcolm