Date: Sat, 13 Jan 2007 14:04:47 -0500 From: Kris Kennaway <kris@obsecurity.org> To: Michel Santos <michel@lucenet.com.br> Cc: freebsd-performance@freebsd.org, Mark Kirkwood <markir@paradise.net.nz>, Kris Kennaway <kris@obsecurity.org> Subject: Re: diskio low read performance Message-ID: <20070113190447.GA65571@xor.obsecurity.org> In-Reply-To: <60639.200.152.83.36.1168714686.squirrel@webmail.matik.com.br> References: <64656.200.152.83.36.1168651673.squirrel@webmail.matik.com.br> <45A87878.1050505@paradise.net.nz> <63758.200.152.83.36.1168689227.squirrel@webmail.matik.com.br> <20070113164232.GA34348@xor.obsecurity.org> <64857.200.152.83.36.1168710081.squirrel@webmail.matik.com.br> <20070113180036.GA64359@xor.obsecurity.org> <60639.200.152.83.36.1168714686.squirrel@webmail.matik.com.br>
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--BOKacYhQ+x31HxR3 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Jan 13, 2007 at 04:58:06PM -0200, Michel Santos wrote: > I have two server, the main server is a Supermicro Dualcore Dual Opteron > and the backup is a Athlon64 X2, both with 4GB >=20 > The disks are the same, only the onboard SCSI is Adaptec and the other is > LSI. Funny is that I have no difference regarding the disk read > performance wether I use the Opteron machine or the other >=20 > dmesg Opteron > http://suporte.lucenet.com.br/ms/dmesg.sm >=20 > dmesg X2 > http://suporte.lucenet.com.br/ms/dmesg.x2 >=20 > kernel config > http://suporte.lucenet.com.br/ms/kernel62 options SCHED_ULE # ULE scheduler =46rom the NOTES file from where you copied this: # SCHED_ULE is a new scheduler that has been designed for SMP and has some # advantages for UP as well. It is intended to replace the 4BSD scheduler # over time. NOTE: SCHED_ULE is currently considered experimental and is # not recommended for production use at this time. When investigating problems with your system, your very first step should be to revert the use of code marked "experimental" and "not recommended for production use" ;-) Kris --BOKacYhQ+x31HxR3 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFFqS1PWry0BWjoQKURAqjIAKDySjCjqjr73WibSWfVBuLNcfEpMgCeLsmO Qv4AL2FMo5EI3t1ErRZW/MU= =jCfx -----END PGP SIGNATURE----- --BOKacYhQ+x31HxR3--
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