Date: Fri, 06 Apr 2012 01:49:44 +0900 From: Stephane LAPIE <stephane.lapie@darkbsd.org> To: Moritz Wilhelmy <mw+fbsd@dennis.cs.uni-saarland.de> Cc: freebsd-hardware@freebsd.org Subject: Re: Do you recommend Supermicro AOC-SAT2-MV8 as PCI-X SATA controller? Message-ID: <4F7DCD28.6000103@darkbsd.org> In-Reply-To: <20120404173628.GH18733@emile.cs.uni-saarland.de> References: <20120404135238.GF18733@emile.cs.uni-saarland.de> <4F7C59D8.8080406@darkbsd.org> <20120404154639.GG18733@emile.cs.uni-saarland.de> <4F7C7443.9090304@darkbsd.org> <20120404173628.GH18733@emile.cs.uni-saarland.de>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigE2F0C526CED020A9F7C85970 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hello Moritz, On 04/05/2012 02:36 AM, Moritz Wilhelmy wrote: > Hello Stephane, > > Thanks for the informative reply! > > On Thu, Apr 05, 2012 at 01:18:11 +0900, Stephane LAPIE wrote: >> Right now I'm using this controller : >> >> mpt0@pci0:6:1:0: class=3D0x010000 card=3D0x10aa1734 chip=3D0x005410= 00 >> rev=3D0x01 hdr=3D0x00 >> vendor =3D 'LSI Logic / Symbios Logic' >> device =3D 'SAS1068 PCI-X Fusion-MPT SAS' >> class =3D mass storage >> subclass =3D SCSI >> mpt1@pci0:6:7:0: class=3D0x010000 card=3D0x10aa1734 chip=3D0x005410= 00 >> rev=3D0x01 hdr=3D0x00 >> vendor =3D 'LSI Logic / Symbios Logic' >> device =3D 'SAS1068 PCI-X Fusion-MPT SAS' >> class =3D mass storage >> subclass =3D SCSI >> >> http://www.lsi.com/products/storagecomponents/Pages/LSISAS1068.aspx >> >> The only problem is, that card is an OEM version that was a bit tricky= >> to find. >> I got it off an auction site in Japan, but I guess it covers pretty mu= ch >> what you want, >> in that it will advertise disks as physical volumes by default. > > I see. I'll try to get my hands on one, but anything that's hard to buy= > is also not an option (as always with universities, there is already > enough bureaucracy involved). Unfortunately, this limits the choice of > hardware :-( I see :( >> My only complaint on FreeBSD 9.X so far is that, >> it has trouble doing SMART probes on the disks using passthrough :) > > Uh, that's bad with that many disks... How do you work around it, if at= > all? I didn't manage yet :( I'm pretty much stuck... > >> Performance is top notch, even though I had to tweak my /boot/loader.c= onf >> to have a long SCSI timeout for disk detection (as you can imagine, >> 15 disks will take a LONG time to detect.) : >> kern.cam.scsi_delay=3D15000 > > How's the performance of the AOC-SAT2-MV8 compared to this one? I don't remember the exact figures. But given that the mvs(4) sometimes hanged up (most of the time silently, really bad times would have drives flap in and out), I say that mpt(4) comes out on top easy. Other than that... My testing was done using all of my Gbit interfaces and trying to max them all at once, and I could bust out something like 300-400MB/s in pure transfer speeds using HTTP. I'm not sure if the zpool iostat are to be trusted, but I reckon mvs(4) would go up to 400MB/s while mpt(4) did go around 500-600MB/s... (take that with a healthy grain of salt) Cheers --=20 Stephane LAPIE, EPITA SRS, Promo 2005 "Even when they have digital readouts, I can't understand them." --MegaTokyo --------------enigE2F0C526CED020A9F7C85970 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk99zSsACgkQ24Ql8u6TF2NSHACgjpR5Gay3crFXh4dh10hW8YPX 12AAoMbBHsKohWxMlWrNtMSs9EBlKmUn =FgK/ -----END PGP SIGNATURE----- --------------enigE2F0C526CED020A9F7C85970--
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