Date: Fri, 29 Oct 2004 02:00:47 -0600 From: Scott Long <scottl@freebsd.org> To: Ganbold <ganbold@micom.mng.net> Cc: freebsd-amd64@freebsd.org Subject: Re: FreeBSD 5.3 problem on Dual AMD64 2.2GHz with 8GB RAM continues Message-ID: <4181F8AF.8030800@freebsd.org> In-Reply-To: <6.1.2.0.2.20041029115322.02b43510@202.179.0.80> References: <6.1.2.0.2.20041029101540.02b28eb0@202.179.0.80> <20041029033416.GC13963@dragon.nuxi.com> <6.1.2.0.2.20041029115322.02b43510@202.179.0.80>
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Ganbold wrote: > At 12:34 PM 10/29/2004, you wrote: > >> > With 4GB RAM I compiled kernel without ATA support and tried new kernel >> > with 8GB RAM. >> >> You definately don't want to use ATA, so it is good you compiled it out. >> It is felt by several of us that there is a problem with ATA in >4GB >> systems right now. >> >> Correct me if I'm wrong -- Scott Long verified that the driver for the >> IBM RAID controller you are using is 64-bit clean and has no known issues >> on >4GB systems? > > > Scott didn't tell me. So I thought it is clean. Maybe now he will > confirm it. > I'm cc-ing to him. > > Ganbold The ips driver looks like it will fail under heavy load when more than 4GB of RAM is present. I tries to force busdma to not defer requests when the bounce page reserve is low, but that looks to be broken and will result in corrupted commands. Scott
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