From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew To: 9fans@cse.psu.edu Subject: Re: [9fans] file server page faulting Message-ID: <20020913150156.GA19342@thefrayedknot.armory.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4i Date: Fri, 13 Sep 2002 08:01:56 -0700 Topicbox-Message-UUID: e9c5e5e2-eaca-11e9-9e20-41e7f4b1d025 On Thu, Sep 12, 2002 at 07:57:55AM +0100, nigel@9fs.org wrote: > Can't say I've ever got a page fault out of 9fs. Plenty of other > things. > > As the kernel does not demand page, page faults should not happen. > You are down to hardware or software bugs. A first step would be > to reveal the hardware involved. If you have a motherboard with > a shared memory vga, for example, then you could be in deep trouble. > You can also check where the page fault occurs in case it is at a > consistent point in the kernel, which would suggest a software bug. > If it wanders around randomly, then it's probably hardware. the hardware is an older pentium (90?) it has 40 mb of ram with integrated s3 video and uses a symbios scsi adapter with a 2.5gb hard drive. No dump media is attached. The ethernet card is a i82557 mini-nic. I can make this happen by usually accessing lots and lotsof data. For example if i cat /dev/zero into a file then cat it back out a couple of times it usually breaks. I swapped the scsi setup into another system (my terminal actually), which does not have an integrated video controller and the same type of nic. It had the same problem. The crash is known to happen seemingly sporadically also. is it worth reinstalling onto ide drives? I can backup all my changes fairly easily.