Mark - No I didn't change any of the HBA bios or QLT parameters. Are you going into a fibre channel switch?
thanks, liam On Fri, Sep 5, 2014 at 1:06 AM, Mark <mark0...@gmail.com> wrote: > > Thanks Liam, > > no ssd's. > Did you change any hba bios or qlt parameters ? > > > Unfortuntely the only Emulex adapter I have is unsupported - an LPe1150. > > I tried a different "brand" of 4G QLogic adapter. > After adding an alias for it to even be seen, the performance was the > same. Around 200Mb/sec read and under 30 for write. > > I do have access to an 8Gb one I could try next. > > The luns will eventually be for Commvault storage, with a 64k block size. > Trying different zfs block sizes hasn't made a significant difference to > the Windows throughput. > > Mark. > > > > On 4/09/2014 9:31 p.m., Liam Slusser wrote: > >> I have a few ZFS servers (OI and OmniOS) that are fibre Channel targets. >> I >> use the qLogic 2562 8g dualport FC HBA card in all of them with great >> success. >> >> One of my systems is similar to yours, with 2 x (12 x 4T SAS) attached via >> a LSI 9207-8e SAS HBA. I am able to saturate both 8gb fibre channel >> connections with a single host. >> >> My target is a Sun/Oracle T4 system running Oracle Solaris 10 also with a >> qLogic 2562. I generally use a small block size (8k) since I only use >> these servers for an Oracle RDBMS 12c database. I use the Oracle ASM >> filesystem on the target side. >> >> I've never tried to mount to a Windows server before with my setup. You >> didn't mention if you had a SSD for ZIL, but you might want to try >> disabling the ZIL and seeing if that helps your performance. >> >> You can also monitor what the ZIL is doing with a great little program >> written by Richard Elling. >> http://www.richardelling.com/Home/scripts-and-programs-1/zilstat With >> this >> you can monitor the ZIL writes - it should help to figure out if that is >> your problem or not. >> >> Good luck! >> >> thanks, >> liam >> >> >> >> On Thu, Sep 4, 2014 at 1:29 AM, Mark <mark0...@gmail.com> wrote: >> >> Does anyone have experience with Comstar as a Fibre Channel Target ? >>> >>> I build one some years ago, which ran really well, but my latest effort >>> is >>> disappointing. >>> >>> Throughput is abysmal, only reaching about 20 Mbytes/sec depending on >>> block size. >>> >>> Zpool is raidz with 30 x 4Tb SAS disk attached to a 6G SAS IT controller. >>> Local disk throughput reaches over 400 Mbytes/sec. >>> >>> >>> The Initiator is Windows 2012 with Qlogic 8G adapter, and Qlogic 4G at >>> the >>> OI end, with straight cable. >>> >>> It works, no errors I can find, but performance just sucks. >>> >>> In desperation, I'm about to try swapping the Qlogic for an Emulex HBA. >>> >>> Can anyone offer suggestions on identifying possible causes ? >>> >>> Mark. >>> >>> >>> >>> _______________________________________________ >>> openindiana-discuss mailing list >>> openindiana-discuss@openindiana.org >>> http://openindiana.org/mailman/listinfo/openindiana-discuss >>> >>> _______________________________________________ >> openindiana-discuss mailing list >> openindiana-discuss@openindiana.org >> http://openindiana.org/mailman/listinfo/openindiana-discuss >> >> > > _______________________________________________ > openindiana-discuss mailing list > openindiana-discuss@openindiana.org > http://openindiana.org/mailman/listinfo/openindiana-discuss > _______________________________________________ openindiana-discuss mailing list openindiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss
