Date: Thu, 31 Mar 2005 00:23:35 -0700 From: Scott Long <scottl@samsco.org> To: Ganbold <ganbold@micom.mng.net> Cc: jhb@FreeBSD.org Subject: Re: Problems with AMD64 and 8 GB RAM? Message-ID: <424BA577.9040201@samsco.org> In-Reply-To: <6.2.0.14.2.20050331154533.031e69e0@202.179.0.80> References: <20050330222439.GU84137@wantadilla.lemis.com> <20050330223546.GA4705@troutmask.apl.washington.edu> <20050330224445.GW84137@wantadilla.lemis.com> <200503311032.33718.doconnor@gsoft.com.au> <20050331015429.GH6252@wantadilla.lemis.com> <657eb6604d1e00368d77f047a8b5e074@FreeBSD.org> <20050331040811.GL6252@wantadilla.lemis.com> <424B7C74.4060203@samsco.org> <20050331051458.GM6252@wantadilla.lemis.com> <424B8A94.5070300@alumni.rice.edu> <424B8A4F.7050607@samsco.org> <6.2.0.14.2.20050331154533.031e69e0@202.179.0.80>
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Ganbold wrote: > Hi, > > Since we are discussing AMD64 with 8GB RAM, I also would like to point my > problem. > > I'm still looking for possibility to run FreeBSD 5.3-STABLE with more > than 4GB RAM > on Dual amd64 2.2GHz machine (IBM @server 325) with ServeRAID 6M (ips > driver)). > Right now I'm using only 4GB RAM and this server is in production. > > #uname -an > FreeBSD publica.ub.mng.net 5.3-STABLE FreeBSD 5.3-STABLE #12: Mon Nov 22 > 12:04:57 ULAT 2004 > tsgan@publicc.ub.mng.net:/usr/obj/usr/src/sys/AMD amd64 > > As Scott said a few months ago, problem is below: > > "The ips driver looks like it will fail under heavy load when more > than 4GB > of RAM is present. It 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." > > Are the ips driver and bus_dma problems fixed yet in STABLE tree? > Is it worth to try source update and see how it works? I'm afraid to do > so, since it is production server. > > Yes, I (hopefully) fixed the problems that I pointed out, and I also locked it and added crashdump support. It is reported to be stable and fast now, so you won't go wrong by updating. These changes are in both 5-stable and 6-current. Scott
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