Date: Sun, 2 Aug 1998 11:11:39 -0600 (MDT) From: "Justin T. Gibbs" <gibbs@narnia.plutotech.com> To: Philippe Regnauld <regnauld@deepo.prosa.dk> Cc: current@FreeBSD.ORG Subject: Re: system lock-up (SMP, AHC_TAGENABLE, softupdates) Message-ID: <199808021711.LAA07746@narnia.plutotech.com> In-Reply-To: <19980802172204.50682@deepo.prosa.dk>
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In article <19980802172204.50682@deepo.prosa.dk> you wrote: > System: GigaByte 586-DX, 2xP5-133, 48MB, on-board 7880 SCSI, > 4GB IBM DCAS-34330W. > Current as of CTM src-cur 3477 (< 48 hours). > > Softupdates enabled on _all_ filesystems: no problem, did > two make buildworlds/installworld in a row, as long > as AHC_TAGENABLE is off. > > If I enable AHC_TAGENABLE, and push the system a bit (lots > of FS activity) -> freeze. Last time it happened was with X, > so I'd have to do it again in text mode to write down the AHC > TAG messages... Assuming it is an AHC problem. I had a freeze not to long ago using the SCSI CAM code that only seemed to occur with soft-updates enabled. I haven't had the spare time to go re-enable soft-updates to reproduce this again, but considering the I/O regression tests I run successfully on this system when it's not running soft-updates, my inclination is to believe the bug is not in the Adaptec driver. Using tagged queuing may exacerbate the problem (most likely by tying up more kernel resources for pending I/O), but I doubt it is the root of the problem. -- Justin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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