Date: Thu, 17 Feb 2011 11:07:21 -0800 From: Rumen Telbizov <telbizov@gmail.com> To: Damien Fleuriot <ml@my.gd> Cc: "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org> Subject: Re: LSI SAS 2008 (mfi) on SuperMicro X8SI6-F Message-ID: <AANLkTinxw8Orpo_3xMSU2pwYbHOozwsaE_=As7i5eJkW@mail.gmail.com> In-Reply-To: <4D5D1075.2060708@my.gd> 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>
next in thread | previous in thread | raw e-mail | index | archive | help
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. > 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. Regards, -- Rumen Telbizov http://telbizov.com
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?AANLkTinxw8Orpo_3xMSU2pwYbHOozwsaE_=As7i5eJkW>