Date: Sun, 15 Jun 1997 12:34:17 -0500 (EST) From: "John S. Dyson" <toor@dyson.iquest.net> To: spatula@gulf.net (Nick Johnson) Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Reasonable diagnosis? Message-ID: <199706151734.MAA00300@dyson.iquest.net> In-Reply-To: <Pine.BSI.3.96.970615110245.11599B-100000@pompano.pcola.gulf.net> from Nick Johnson at "Jun 15, 97 11:11:46 am"
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> > My analysis of these events leads me to believe that most of my > problems are the result of a flaky disk controller; the page faults could > very well have been a result of reading bad data off the swap partition on > the disk, which could conceivably make the OS go berzerk, resulting in any > number of strange things happening, such as the video spasm I got last > night (which had also happened a few months ago before either partition > crashed. at that time it looked like a program mistakenly thought its > stack belonged in my video ram). > > The disk controller is a WDC AC31600H on a WD Caviar drive. I've been > told that the WD controllers beginning with a 3 cause problems. Can > anyone share experiences of this? > > Any insight or corrections to my hypothesis are most welcome and > appreciated. > Not regarding the drive, but regarding the kernel... If ANY swapping occurs, the upages can be corrupted, the kernel will likely crash. In essence, if you have a system that SIG-11's at all due to hardware problems, your system will be much more vulnerable if you swap. John
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