Date: Fri, 11 Mar 2005 13:57:56 +0000 From: Jason Thomson <jason.thomson@mintel.com> To: Emmanuel OTTON <otton@enstimac.fr> Cc: freebsd-stable@freebsd.org Subject: Re: PAE+SMP panic with "page fault while in kernel mode" in many files opened situations Message-ID: <4231A3E4.4070605@mintel.com> In-Reply-To: <942faaf51f9210be76c25158da4d1b86@enstimac.fr> References: <6290d171fce4e3b4ee88f403a4aac711@enstimac.fr> <42317CF3.20903@mintel.com> <942faaf51f9210be76c25158da4d1b86@enstimac.fr>
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Emmanuel OTTON wrote: > > Le 11 mars 05, à 12:11, Jason Thomson a écrit : > >> If you disable the logical processors in the BIOS, this problem >> should go away. >> >> We ended up reverting to 4-STABLE for other reasons. > > > Thanks for your answer. > > The problem is still there, unfortunately. > > Crashes no more on pagedaemon though, for a change, but on irq48:em0... > > Would you have KVA_PAGES / maxvnodes recommendation for this case ? > > Was your answer based on painful trial-and-error, or is there a logical > reason (known bad HTT or PAE or Xeon support) ? > > Should I revert to 4-STABLE to get solid PAE+SMP support ? > > -- > Emmanuel OTTON - Ecole des Mines d'Albi-Carmaux - Responsable informatique > Tél: 05 63 49 30 86 > We had KVA_PAGES=768. It's now at KVA_PAGES=672 to give us the right balance between KVM & usable process size. We spent a few (4 hours) trying to get 5-STABLE to work properly. It would reliably crash when running make -j 4 buildworld. When we disabled the logical processors in the BIOS, make -j 4 buildworld would succeed. Also, we disabled the USB subsystem in the BIOS. I don't know whether you have already. It looks like you haven't from your first post. This is advisable. In any case, we reverted to 4-STABLE. We needed the patches posted to this list to enable us to use PAE + amr driver. Since reverting it has been completely stable. (And very very fast:-) I didn't post anything to the list regarding our problems, because we weren't able to get a crashdump.
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