Date: Thu, 21 Oct 2004 13:42:51 -0700 From: Kris Kennaway <kris@obsecurity.org> To: fandino <fandino@ng.fadesa.es> Cc: freebsd-current@freebsd.org Subject: Re: FreeBSD 5.3b7and poor ata performance Message-ID: <20041021204251.GB37620@xor.obsecurity.org> In-Reply-To: <4177E8D9.7070303@ng.fadesa.es> References: <4173D66F.6010200@DeepCore.dk> <4173F2E9.7010407@ng.fadesa.es> <417406E3.9010706@DeepCore.dk> <4174FD04.8040000@ng.fadesa.es> <20041019104525.ikgw8kcw8sw480os@www.sweetdreamsracing.biz> <41753A8F.4040809@ng.fadesa.es> <6.1.2.0.0.20041019121353.026745f8@64.7.153.2> <417766B0.1020409@ng.fadesa.es> <20041021154057.GB640@xor.obsecurity.org> <4177E8D9.7070303@ng.fadesa.es>
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--IrhDeMKUP4DT/M7F Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Oct 21, 2004 at 06:50:33PM +0200, fandino wrote: > Kris Kennaway wrote: > >>OpenBSD 3.5: > >>dd if=3D/mnt/aa of=3D/dev/null bs=3D1024k count=3D1024 > >>1073741824 bytes transferred in 18.743 secs (57287584 bytes/sec) > >> > >>FreeBSD 5.3rc1: > >># dd if=3D/mnt/aa of=3D/dev/null bs=3D1024k count=3D1024 > >>1073741824 bytes transferred in 42.215597 secs (25434719 bytes/sec) >=20 > >BTW, others have asked that you not use dd as your "benchmark", > >because it's not benchmarking anything relevant for real-world use of > >the disk. >=20 > I posted the results of bonnie++ tests two days ago. (fbsd2.txt and obsd.= txt > at the bottom) >=20 > http://lists.freebsd.org/pipermail/freebsd-current/2004-October/040567.ht= ml >=20 > also I did copies of large mpeg files (sequential read) which were a > real pain to process because disks were very slow (as slow as dd tests). >=20 > I will do all tests that you need to demostrate the problem, just tell > me which test you want to do. >=20 > Now, I'm waiting to S?ren. He is the one who can find a bug like this. OK, there's been a lot of useless discussion in this thread, so we should try to keep further instances to a minimum and focus on the useful data instead. Kris --IrhDeMKUP4DT/M7F Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQFBeB9KWry0BWjoQKURAgckAJ46BD/gAak8Idmi2gba3FwnDG/UAgCgj4oc NlEb48dP28xcUiWw0rsqYEI= =OobR -----END PGP SIGNATURE----- --IrhDeMKUP4DT/M7F--
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