Date: Mon, 5 Sep 2005 20:00:16 -0400 From: Kris Kennaway <kris@obsecurity.org> To: Claus Guttesen <kometen@gmail.com> Cc: freebsd-amd64@freebsd.org Subject: Re: Which SCHED_ for DB server Message-ID: <20050906000016.GA91835@xor.obsecurity.org> In-Reply-To: <b41c7552050901015317d5942e@mail.gmail.com> References: <4316A5BC.1000405@meijome.net> <b41c7552050901015317d5942e@mail.gmail.com>
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--AhhlLboLdkugWU4S Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Sep 01, 2005 at 10:53:39AM +0200, Claus Guttesen wrote: > > I'm building a server that will run PostgreSQL with a database > > containing several 10s of million records. The only things happening on > > this box will be the SQL processes and other processes to parse raw data > > and load into the DB. Users =3D a few connections via HTTP from an > > intranet server (not more than 5 concurrently). > >=20 > > I was wondering what is the best SCHED_ to set in the kernel. > > I currently have SCHED_4BSD but was wondering if _ULE would be better > > for this >=20 > For prod. use I would recommend SCHED_4BSD atm. The 4BSD-scheduler > does seem to be more stable on SMP and up. ULE might be OK on SMP with 6.0 and above, but performance seems to be a bit lower than 4BSD in my tests. Try it yourself and see which is better. Kris --AhhlLboLdkugWU4S Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFDHNwQWry0BWjoQKURAkXpAKC2r4WkjyPr3JWoQKa8e7Wdek6DMwCfR1m4 PMhEHTvSd2s48Oj9Ry1jRXw= =UY1L -----END PGP SIGNATURE----- --AhhlLboLdkugWU4S--
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