Date: Wed, 18 Jul 2007 16:08:25 +0200 (CEST) From: "Gelsema, P \(Patrick\)" <gelsemap@superhero.nl> To: "Tony Holmes" <tony@crosswinds.net> Cc: freebsd-current@freebsd.org Subject: Re: 7.0/6.2, 4GB and AHC Message-ID: <34830.195.50.100.20.1184767705.squirrel@www.superhero.nl> In-Reply-To: <20070718133345.GA82366@crosswinds.net> References: <20070718133345.GA82366@crosswinds.net>
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On Wed, July 18, 2007 15:33, Tony Holmes wrote: > I had a very interesting couple of days trying to figure out why > 6.2-STABLE > and 7.0-CURRENT, both amd64, were giving me random hangs, panics etc. > > My system: > > Asus M2NPV-VM > 4GB Ram > 2 x Adaptec 19160 controllers > 14 x 33GB Seagate 10k rpm scsi in a disk shelf (2 channel) > 2 x 80GB Seagate SATA (geom mirror, system disks) I've got an ASUS M2N (latest bios) with an Adaptec 39320D SCSI controller. I get similair issues like mangled entries, unable to mount root after reboot. Currently I installed I386 version which solved all of my problems. I haven't removed the 2x1GB module yet, so that's something to check. On my emails (see http://lists.freebsd.org/pipermail/freebsd-current/2007-July/thread.html) I havent had much response yet. If more information is required I am happy to provide. Patrick > > I had the system installed with 6.2 and upgraded to 7.0- (for the new nfe > driver for the onboard NIC) and added the Adaptecs and disk. I began to > play > with geom to set them up as a RAID 10 system for a database. Same > configuration > on FreeBSD, solaris and other systems resulted in blazing fast > performance. > > Set up the disks, fired up a basic bonnie test and... chug chug and > eventual > random panic. Okay, maybe I messed up the geom config since I was > tinkering > around. Reboot, wait for sync to finish.... 20 hours later it was done - > way > too slow. Checked termination, cables, power, etc. All good. > > Fire up bonnie... first iteration showed approx 8MBps write approx 10MBps > read > was horrendous. Decided to attempt a fresh reinstall. > > Load up 6.2R amd64 cd - panic on startup just after SCSI probe delay. > Tried > once more and same thing. Okay, try 7.0 amd64. > > Divide by 0 error right after SCSI probe - and that's when the thought > struck > me - 4GB ram... > > Pulled out 2GB and viola, 7.0 installed easily. Configured the Raid 10 and > got > the nice 275MBps read and 150MBps (ballpark) benchmark numbers I was > expecting. > > I know that amd64 supports 4gb+ (I have 2 others with SATA only that are > running flawlessly). > > So I am attempting to determine the cause of the failures. > > The adaptecs are 32bit with older bios (2.57 and 3.10). They are in the 2 > 32bit pci slots of the M2NPV motherboard. > > I would have thought FreeBSD would have knocked a memory hole in the > 3.5-4gb > range to accomodate the device mappings. > > Does anyone have any explanations/pointers (I did search and attempt to > RTFM > with not much luck) about this? > > -- > Tony Holmes > > Ph: (416) 993-1219 > > Founder and Senior Systems Architect > Crosswinds Internet Communications Inc. > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" >
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