Date: Wed, 18 Jan 2006 08:03:44 -0500 From: Ted Wisniewski <ted@ness.plymouth.edu> To: freebsd-questions@freebsd.org Cc: Michael Barnett <mbarnett@measuremap.com> Subject: Re: PAE causing system crashes Message-ID: <200601180803.44265.ted@wiz.plymouth.edu> In-Reply-To: <09FE5498-82E3-495C-9593-8F1CFF3A3BD6@measuremap.com> References: <47A794C0-FE22-46FC-9D81-BCF3359CBD61@measuremap.com> <09FE5498-82E3-495C-9593-8F1CFF3A3BD6@measuremap.com>
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You weren't by chance also using NFS? I was, all my other 5.x systems did not use NFS and are stable. I saw this same behavior and wound up going back to 4.11 to keep the system stable. Ted On Tuesday 17 January 2006 03:17 pm, Michael Barnett wrote: > To ammend this slightly.. When running the PAE kernel, they will > stay online indefinitely under little to no load. It is only when i > want them to actually work will they freak out and reboot. > > -m > > On Jan 17, 2006, at 1:47 PM, Michael Barnett wrote: > > I have 3 dell machines with 2x xeon procs, 8G of ram, and a half > > terabyte raid 5. I attempted to run the AMD64 distribution on > > these boxes which was fine for everything except mysql, (which is > > all these boxes are going to do) so I reinstalled 5.4 i386. > > > > uname -a looks like (hostname obscured): > > > > FreeBSD myhost.mydomain.com 5.4-RELEASE-p9 FreeBSD 5.4-RELEASE-p9 > > #2: Mon Jan 16 23:27:12 PST 2006 root@myhost.mydomain.com:/usr/ > > obj/usr/src/sys/SMP-PAE i386 > > > > > > My problem is, if i don't enable PAE in the kernel, i can only > > address half the ram in the boxes, but... the machines are stable. > > > > If i do enable PAE, i can address all the memory, but they randomly > > reboot without dumping any errors or logging. > > > > To enable PAE, i am building and booting off the following kernel > > config: > > > > <snip> > > include PAE > > > > ident SMP-PAE > > > > options SMP > > options KVA_PAGES=512 > > </snip> > > > > I added the KVA_PAGES options hoping to stabilize the machine > > (doesn't seem to have made any difference.) The only other tuning > > i am doing at the moment is in loader.conf: > > > > <snip> > > kern.maxdsiz="2147483648" # Set the max data size > > </snip> > > > > When i boot without PAE I use the generic SMP kernel, and the > > machine is stable. > > > > I know that there are a number of other kernel tunables i could be > > tweaking, but I am not really sure where to start as the machine > > dies silently. I was hoping that someone who has run a stable PAE > > kernel with 8G of ram + could point me in the right direction. > > > > Thanks, > > > > -Michael > > _______________________________________________ > > freebsd-questions@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > > To unsubscribe, send any mail to "freebsd-questions- > > unsubscribe@freebsd.org" > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to > "freebsd-questions-unsubscribe@freebsd.org" -- | Ted Wisniewski E-Mail: ted@mail.plymouth.edu | | Manager, Systems Group WEB: http://oz.plymouth.edu/~ted/ | | Information Technology Services | | Plymouth State University Phone: (603) 535-2661 | | Plymouth NH, 03264 Fax: (603) 535-2263 |
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