Date: Sun, 28 Jun 2009 15:01:39 +0100 From: Bruce Cran <bruce@cran.org.uk> To: Nathan Whitehorn <nwhitehorn@freebsd.org> Cc: freebsd-ppc@freebsd.org Subject: Re: iBook G4 chipset failure causing segfaults? Message-ID: <4A4777C3.1090404@cran.org.uk> In-Reply-To: <4A46970A.3030204@freebsd.org> References: <20090627071710.36c4d2a0@gluon.draftnet> <4A46970A.3030204@freebsd.org>
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Nathan Whitehorn wrote: > Bruce Cran wrote: >> I've recently found that my G4 iBook is causing programs to segfault >> when they start going into swap: the effect is worse on -current but >> I'm also seeing it on 7.2. For example, if I run a program to >> allocate 500MB the >> system will swap out most programs since I only have 512MB RAM. After a >> while dhclient and sendmail segfault while the test program keeps >> running; I've also seen tcsh and login segfault too as I logout. I >> originally found the problem when building clangbsd, where 'as' would >> segfault when it started building the large C++ files that come with >> clang. I can run a normal buildworld so I guess this is more of a >> problem with the chipset (caused by swapping?) than a memory problem? >> >> I've run the Apple Hardware Test utility over 30 loops without any >> errors - has anyone else seen this problem, and is it likely that the >> hardware is simply starting to fail? >> >> > More likely there's a bug in the ATA driver, or the hard disk is > failing, and so swap is being corrupted somehow. Is there a way you > could try swapping to a different, external drive (firewire, for > instance), and see if the problem still exists? I moved swap onto an external 500GB USB drive and also tried disabling ATA DMA on the internal HDD, but I kept seeing the segfaults. -- Brucehelp
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