Date: Tue, 15 Aug 2006 14:56:14 -0500 From: Eric Anderson <anderson@centtech.com> To: freebsd-scsi@freebsd.org Subject: Re: isp issues on recent -STABLE Message-ID: <44E226DE.30701@centtech.com> In-Reply-To: <44E05FE8.3060800@centtech.com> References: <44DB8A9C.8090609@centtech.com> <44DC6F9F.4060405@centtech.com> <20060811154348.GA83765@chuggalug.clues.com> <44DCA9F1.1000302@centtech.com> <7579f7fb0608121101g112e006cy1112d282fab753d3@mail.gmail.com> <20060814080857.GA58022@chuggalug.clues.com> <20060814085936.GB58022@chuggalug.clues.com> <44E05FE8.3060800@centtech.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On 08/14/06 06:35, Eric Anderson wrote: > On 08/14/06 03:59, Geoff Buckingham wrote: >>>>> I have this one host connected to a single QLogic fiber channel switch, >>>>> which has 5 ACNC fiber channel arrays attached to it, along with a tape >>>>> robot and tape drives. Three of the arrays present 3 LUNs each (2TB per >>>>> LUN), and two of them present 2 LUNs each, 4GB and 10TB - I'm not using >>>>> these two arrays much yet, and are not really associated with the problems. >>>>> >> Curiosity just lead me to the acnc website. The html data-sheets suggest >> the arrays support 253 commands, the PDFs 255! It also reads to me as if >> this is per FC port not per LUN. You will presumably have better >> informaton with whatever documentation these devices shipped with. > > > *sigh* - I was going by what I was told on the phone by one of their > support people. I trust the lowest number :) > > I see that now too. I'll try setting that lower (80 should be good for > each of the three LUNs per array). > > Thanks everyone for the hints/help - I'll report back once I know if > that made any difference. > > Eric > > After setting the tag queue depth down, things seem much more stable. Seems like the default should be a bit lower that 256, since very few targets can provide 256 apparently. Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology Anything that works is better than anything that doesn't. ------------------------------------------------------------------------
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?44E226DE.30701>