Date: Fri, 18 Feb 2011 09:49:40 -0700 From: "Kenneth D. Merry" <ken@freebsd.org> To: Rumen Telbizov <telbizov@gmail.com> Cc: "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org> Subject: Re: LSI SAS 2008 (mfi) on SuperMicro X8SI6-F Message-ID: <20110218164940.GD77903@nargothrond.kdm.org> In-Reply-To: <AANLkTinxw8Orpo_3xMSU2pwYbHOozwsaE_=As7i5eJkW@mail.gmail.com> References: <alpine.BSF.2.00.1102161842240.93747@woozle.rinet.ru> <4D5BF78E.7010306@digsys.bg> <alpine.BSF.2.00.1102161920240.93747@woozle.rinet.ru> <4D5BFCC1.3010404@my.gd> <20110217110230.GB25240@e-Gitt.NET> <4D5D0165.1030000@my.gd> <20110217111010.GC25240@e-Gitt.NET> <4D5D1075.2060708@my.gd> <AANLkTinxw8Orpo_3xMSU2pwYbHOozwsaE_=As7i5eJkW@mail.gmail.com>
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On Thu, Feb 17, 2011 at 11:07:21 -0800, Rumen Telbizov wrote: > Hello Damien, list: > > I've been following this discussion with great interest and I hope the > result of it > will be the merge of a stable driver in STABLE branch soon. > > I brought this not a long ago ( > http://lists.freebsd.org/pipermail/freebsd-stable/2011-January/061237.html) > and I was hoping to have this driver in 8.x before 8.3 release. It is in -stable now, and so should be in 8.3. We didn't make it in time for 8.2 unfortunately. > > What is sad is that these controllers are becoming very mainstream now, > > we're getting them more and more on Dell servers , and the fbsd project > > still struggles with them (for reasons I don't know, might be LSI's > > fault, might be a lack of resources or interest...) > > > > I couldn't agree more. I've been testing those (9211-8i) myself here on a > bunch of SuperMicro > servers and I'd say that I am very pleased with the performance of those > HBAs (not the mention the > price ~$230-250 CAD). On a 12 x SAS disks with a direct attached backplane > 826A (6Gbit SAS2.0) > in RAID0 across all of them (md linux software raid) I was able to squeeze * > 2.1GBytes/s* sequential write > (dd kind of style write). With the same setup and SATA disks I get to > 1.2GByte/s. I did use 2 controllers > to accomodate ports for all the disks. I get the same speed with ZFS and > 9.0-CURRENT. > > On a related note I must say that I do have serious problems with the > bandwidth when I use > the SAS expander version of this backplane (826E26) (I cannot get more than > 200-250 MBytes/s). > I've been investigating this problem with LSI's help and still no > conclusion. It looks like I am using > only one channel. > > Anyway this was just my humble attempt to encourage the MFC of this driver. > I think the card is > pretty good. I'd like to hear other people's opinion on this HBA though. MFC is done, try it out and let me know if there are any problems. Thanks, Ken -- Kenneth Merry ken@FreeBSD.ORG
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