Date: Wed, 07 May 2014 09:24:06 -0400 From: Douglas Gilbert <dgilbert@interlog.com> To: Borja Marcos <borjam@sarenet.es>, freebsd-scsi@freebsd.org Subject: Re: Testing new mpr driver Message-ID: <536A33F6.7080401@interlog.com> In-Reply-To: <8A41AB90-AC2F-4200-91D6-3D3CF9E8A835@sarenet.es> References: <8A41AB90-AC2F-4200-91D6-3D3CF9E8A835@sarenet.es>
next in thread | previous in thread | raw e-mail | index | archive | help
On 14-05-07 04:59 AM, Borja Marcos wrote: > > Hi > > I just saw that there's a new driver for LSI3008 SAS3 cards. I have updated a test system to -STABLE, installed one of those cards (in this case, the OEM version sold by IBM as a HBA, with IT firmware). > > mpr0: <LSI SAS3008> port 0x3f00-0x3fff mem 0x912f0000-0x912fffff irq 32 at device 0.0 on pci17 > > > > > Excellent so far I have noticed a difference with the mps based LSI2008 cards: in the same hardware configuration as my previous tests (except, of course, the HBA) it seems to be faster. And I am using just one cable to connect the HBA to the backplane instead of two, I didn't have another cable available. > > <ATA Samsung SSD 840 BB0Q> at scbus0 target 25 lun 0 (pass0,da0) > <ATA Samsung SSD 840 BB0Q> at scbus0 target 26 lun 0 (pass1,da1) > <ATA Samsung SSD 840 BB0Q> at scbus0 target 27 lun 0 (pass2,da2) > <ATA Samsung SSD 840 BB0Q> at scbus0 target 28 lun 0 (pass3,da3) > <ATA Samsung SSD 840 BB0Q> at scbus0 target 29 lun 0 (pass4,da4) > <ATA Samsung SSD 840 BB0Q> at scbus0 target 30 lun 0 (pass5,da5) > <ATA Samsung SSD 840 BB0Q> at scbus0 target 33 lun 0 (pass6,da6) > <ATA Samsung SSD 840 BB0Q> at scbus0 target 34 lun 0 (pass7,da7) > <ATA Samsung SSD 840 BB0Q> at scbus0 target 35 lun 0 (pass8,da8) > <IBM-ESXS SAS EXP BP 61A6> at scbus0 target 263 lun 0 (pass9,ses0) > <IBM-ESXS SAS EXP BP 61A6> at scbus0 target 288 lun 0 (pass10,ses1) > > I have created a ZFS pool with the SSDs. With the LSI2008 based card I needed to run several bonnie++ instances in parallel in order to saturate the I/O bandwidth, and with this card a single instance reaches peak performance. > > Does it make sense at all? > > I assume that the driver could be considered almost production ready. Is it going to be included in 9.3 as well, as the manpage states, or is it a typo? I'm keen to try the mpr driver and have LSI 9300-4i/4i4e HBAs plus a 12 Gbps SSD and SAS-2 bits to test with it. [Free-standing SAS-3 expanders are not common (but Areca just released one).] My FreeBSD system is at 10.0-RELEASE-p2 and moving it to -STABLE looks like a fair amount of pain. Further I can see nothing on the FreeBSD site about the mpr driver. Could you supply links to any information about this driver? Is it likely to appear in 10.0-RELEASE-p? any time soon? FreeBSD is seriously lacking in the SAS-3 area compared to some other OSes. As SATA SSDs are strangled by their 6 Gbps (single port) interface, several new SAS 12 Gbps (SAS-3) products have appeared in the last month or so, with more to follow. Doug Gilbert
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?536A33F6.7080401>