On Mon, Jan 25, 2010 at 08:02:58PM +0200, Dan Naumov wrote: > On Mon, Jan 25, 2010 at 7:40 PM, Alexander Motin <[email protected]> wrote: > > Artem Belevich wrote: > >> aoc-sat2-mv8 was somewhat slower compared to ICH9 or LSI1068 > >> controllers when I tried it with 6 and 8 disks. > >> I think the problem is that MV8 only does 32K per transfer and that > >> does seem to matter when you have 8 drives hooked up to it. I don't > >> have hard numbers, but peak throughput of MV8 with 8-disk raidz2 was > >> noticeably lower than that of LSI1068 in the same configuration. Both > >> LSI1068 and MV2 were on the same PCI-X bus. It could be a driver > >> limitation. The driver for Marvel SATA controllers in NetBSD seems a > >> bit more advanced compared to what's in FreeBSD. > > > > I also wouldn't recommend to use Marvell 88SXx0xx controllers now. While > > potentially they are interesting, lack of documentation and numerous > > hardware bugs make existing FreeBSD driver very limited there. > > > >> I wish intel would make cheap multi-port PCIe SATA card based on their > >> AHCI controllers. > > > > Indeed. Intel on-board AHCI SATA controllers are fastest from all I have > > tested. Unluckily, they are not producing discrete versions. :( > > > > Now, if discrete solution is really needed, I would still recommend > > SiI3124, but with proper PCI-X 64bit/133MHz bus or built-in PCIe x8 > > bridge. They are fast and have good new siis driver. > > > >> On Mon, Jan 25, 2010 at 3:29 AM, Pete French > >> <[email protected]> wrote: > >>>> I like to use pci-x with aoc-sat2-mv8 cards or pci-e cards....that way > >>>> you > >>>> get a lot more bandwidth.. > >>> I would goalong with that - I have precisely the same controller, with > >>> a pair of eSATA drives, running ZFS mirrored. But I get a nice 100 > >>> meg/second out of them if I try. My controller is, however on PCI-X, not > >>> PCI. It's a shame PCI-X appears to have gone the way of the dinosaur :-( > > > > -- > > Alexander Motin > > Alexander, since you seem to be experienced in the area, what do you > think of these 2 for use in a FreeBSD8 ZFS NAS: > > http://www.supermicro.com/products/motherboard/ATOM/ICH9/X7SPA.cfm?typ=H > http://www.supermicro.com/products/motherboard/ATOM/ICH9/X7SPA.cfm?typ=H&IPMI=Y
Any of Supermicro's hardware with an ICH9 will be decent -- but you should remember that there's still a good portion of the I/O transactions which are CPU-bound. The Atom CPU isn't exactly an extensive workhorse. If/once you get one, let me know so I can steal you as a beta tester for getting X7SPA hardware monitoring (fans, external CPU temps, voltages) working in bsdhwmon. :-) -- | Jeremy Chadwick [email protected] | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB | _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[email protected]"
