Date: Sat, 30 Mar 2002 21:08:25 -0700 From: "Kenneth D. Merry" <ken@kdm.org> To: Michael Smith <msmith@freebsd.org> Cc: Lukas Ertl <l.ertl@univie.ac.at>, freebsd-scsi@freebsd.org Subject: Re: ciss driver and tagged queuing Message-ID: <20020330210825.B44448@panzer.kdm.org> In-Reply-To: <200203292227.g2TMRYN01423@mass.dis.org>; from msmith@freebsd.org on Fri, Mar 29, 2002 at 02:27:34PM -0800 References: <20020328134207.A22421@panzer.kdm.org> <200203292227.g2TMRYN01423@mass.dis.org>
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On Fri, Mar 29, 2002 at 14:27:34 -0800, Michael Smith wrote: > > > ciss1: base transfer speed: 135.168MB/sec > > > > Hmm, that value is a bit funny, although I suppose for a RAID board it's > > kinda hard to know exactly what to put there. > > Yeah; I cheated and just used the theoretical maximum slow/narrow PCI > throughput. I'd really like to be able to report a "this value makes no > sense" figure, since there's no good way to compute a "base transfer > speed" for an array. True. We could probably do it with a valid bit. In any case, it's mostly cosmetic. > > > Apart from that: the ciss driver is fairly new AFAIK, I didn't find a lot > > > of references to it on the web. Would you recommend it for production use? > > > Is there any testing going for userland tools (status control a.s.o.)? > > > > Mike Smith <msmith@FreeBSD.org> would be the one to ask. > > It's in production at Yahoo!, although still a bit green. There's > documentation available from Compaq that would let you write a basic > monitoring tool (I can help here), but no chance of Compaq's own tools > being released anytime soon. Sounds familiar. > If you were really masochistic, you could probably get all of Compaq's > monitoring goo for your machine running under Linux emulation, but I > suspect it'd be a job of work. What sort of hardware is on these controllers anyway? (i.e. what kind of processor, do they have a parity engine, etc.) Ken -- Kenneth Merry ken@kdm.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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