Date: Wed, 6 Jun 2001 14:48:04 +0200 From: Thomas Seck <tmseck@web.de> To: freebsd-stable@freebsd.org Subject: Re: Strange SCSI error message Message-ID: <20010606144804.B724@basildon> In-Reply-To: <20010606034157.B97958@mail.webmonster.de>; from karsten@rohrbach.de on Wed, Jun 06, 2001 at 03:41:57AM %2B0200 References: <20010605123023.S4259-100000@merlin.th.physik.uni-bonn.de> <20010605125635.A1349@basildon> <20010606034157.B97958@mail.webmonster.de>
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On Jun 06 2001, Karsten W. Rohrbach wrote: > there were some questions a while ago concerning the freebsd vs linux > scenario where a freebsd fails with SCB timeouts while a linux runs > along with apparently no problems at all. the quick answer for this > particular behaviour in freebsd is, that the io subsystem is designed to > put more load onto the scsi devices than the implementation of other > os'es io subsystems. so, basically, what happens is, that you only see > the timeouts under freebsd, of course, since it arbits the scsi bus more > often, and with more data in the same period of time compared to other > implementations. Yes, this might well be the problem. What bothers me is that these errors only appeared when the box had been _really_ idle for hours. > terminate correctly, symmetric terminators, active, for u160. use good > cables, no vobis crap ;-) Vobis? Hey! (Note: Vobis is a chain of computer shops in Germany notorious for selling *really* crappy HW for about 15 years now) > i use amphenol cables for external links and > gr-kabel (german distributor) for internal wiring. this solved most of > my scsi problems with u160. Well, I hope I never have to see these problems again, cross fingers. Thank you for your response and regards from the rainy rhinelands, Thomas Seck To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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