Date: Thu, 15 Jan 2009 18:17:05 +0200 From: Danny Braniss <danny@cs.huji.ac.il> To: Sossi Andrej <asossi@dotcom.ts.it> Cc: freebsd-scsi@freebsd.org Subject: Re: ISCSI slow to read from DELL MD3000i Message-ID: <E1LNUu1-000EXj-94@kabab.cs.huji.ac.il> In-Reply-To: <496F5C80.9030406@dotcom.ts.it> References: <E1LN6MK-000Nc1-3C@kabab.cs.huji.ac.il> <496F5C80.9030406@dotcom.ts.it>
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> Danny Braniss write: > > [...] > > > >>>> In this week I did many tests on ISCSI and found another problem with > >>>> slow writing. I created 7 virtual disk on my NAS server. The first 4 > >>>> disks (/dev/da0 - /dev/da3) work fine, the other 3 (/dev/da4 - /dev/da6) > >>>> are slow. > >>>> I found this depends from parameter ISCSI_MAX_LUNS defined in file > >>>> iscsi.h, set 4. I tried to increase this value, but with all values > >>>> higher of 4 the initiator prints error: > >>>> iscontrol[602]: ISCSIGETCAM failed: 25 > >>>> > >>>> > > arg, I will fix this in the next release, but for now, recompile iscontrol too. > > > > [...] > > > > danny > > > I forgot to compile iscontrol. Sorry. don't be sorry, it's my fault. > Now it works fine. > R/W speed is now ~48Mb/s on disks da0-3 and ~32Mb/s on disks da4-6. I > set ISCSI_MAX_LUNS at value 16. Speed 32Mb/s is good for my job, but... > why is there this difference? don't know, there shouldn't be any difference, make sure they all have the same tag opening, > Thanks for another reply. thank you for testing! danny PS: the email I sent you before was almost correct answer to the wrong question.
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