Date: Fri, 19 Jun 2009 20:14:19 +0100 From: Bruce Cran <bruce@cran.org.uk> To: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> Cc: freebsd-questions@freebsd.org Subject: Re: Processes dying with signal 11 Message-ID: <20090619201419.27fcec9b@gluon.draftnet> In-Reply-To: <alpine.BSF.2.00.0906192103360.74610@wojtek.tensor.gdynia.pl> References: <20090619175537.36128909@gluon.draftnet> <alpine.BSF.2.00.0906192103360.74610@wojtek.tensor.gdynia.pl>
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On Fri, 19 Jun 2009 21:04:26 +0200 (CEST) Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> wrote: > > up-to-date HEAD: > > > > FreeBSD mac.draftnet 8.0-CURRENT #0: Tue Jun 16 22:07:11 BST 2009 > > brucec@mac.draftnet:/usr/obj/usr/src/sys/IBOOK powerpc > > > > The problem I see is that after a few hours of running buildworld, > > when it starts building clang itself, 'as' crashes with a signal 11. > > > always at the same point or in random places? > > if first - it's probably not hardware problem. It's at a random location, but it always happens after the build has been running for a few hours and when it's ended up swapping some processes out of main memory. I've read http://www.freebsd.org/doc/en/books/faq/troubleshoot.html#SIGNAL11 and wondered if the collatoral is a normal symptom too. > > I'm wondering if this is the normal case of bad memory/HDD/CPU or > > something else because it also causes several other processes to > > crash, notably dhclient and sendmail, but I've also seen tcsh crash > > too. I created a test program which allocated 500MB memory to > > force the system into swap (my iBook only has 512MB). After a few > > minutes dhclient crashed but the test program kept running. Is > > this what normally happens when hardware's going bad? > > isn't it going out of swap? No, it's definitely not running out of swap, since I have 4.5GB available! For example using the test program I allocate 500MB memory; 95MB swap gets used but after a few minutes I get: pid 470 (dhclient), uid 0: exited on signal 11 (core dumped) pid 1002 (sendmail), uid 0: exited on signal 11 pid 1054 (sendmail), uid 0: exited on signal 11 pid 1104 (sendmail), uid 0: exited on signal 11 pid 1156 (sendmail), uid 0: exited on signal 11 pid 1207 (sendmail), uid 0: exited on signal 11 but my test program keeps running: 1227 v1 R+ 2:06.23 /usr/obj/home/brucec/test -- Bruce
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