Date: Mon, 9 Jul 2007 12:14:08 +1000 From: Peter Jeremy <peterjeremy@optushome.com.au> To: Diane Bruce <db@db.net> Cc: freebsd-arch@freebsd.org Subject: Re: select timings Message-ID: <20070709021408.GK3434@turion.vk2pj.dyndns.org> In-Reply-To: <20070709004640.GA61639@night.db.net> References: <20070709004640.GA61639@night.db.net>
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--oTHb8nViIGeoXxdp Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2007-Jul-08 20:46:40 -0400, Diane Bruce <db@db.net> wrote: >It is a rather naive test program, close all fd's except >for 0,1,2 of course, then open /dev/null multiple times, then do >a select() on each descriptor. ~db/selt.c Thanks for the testing. Can you please feed the output through (eg) src/tools/tools/ministat. >I will be trying some other select tests. >I suspect with a sparse fd_set, jeffr's results will be better than stock. >We'll see. Having a very large number of selected FDs return ready is unrealistic - I can't think of any real-world situation where this would occur. A more realistic situation would look like a Poisson distribution with a small lambda (probably 1). Writing a test suite for this is probably significantly more effort than your selt.c --=20 Peter Jeremy --oTHb8nViIGeoXxdp Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) iD8DBQFGkZnw/opHv/APuIcRApcsAKCB9Hlx9M2wYuSqQ/JOZxLJqZp/DQCffSjT QKdqq4F9mvEMFaSBvEHzUKo= =uBnv -----END PGP SIGNATURE----- --oTHb8nViIGeoXxdp--
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