> Date: Thu, 31 Mar 2005 16:12:35 +0900 > From: Ganbold <[EMAIL PROTECTED]> > Subject: Re: Problems with AMD64 and 8 GB RAM? > > 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 [EMAIL PROTECTED]:/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."
[Alan Jay] Since we are talking about FreeBSD on AMD64 on the AMD64 list I have reported issues on that list. I have a TyanThunder K8S pro S2882 twin Operteron with 8Gb of RAM and although I can get the machine to run reasonably stably with 8Gb of RAM with limited loading when pushed it falls over unpredictably. We did some tests with the latest 5.3-STABLE / 5.4-PRERELEASE and still found the same issues when using a mySQL database heavily hit over the Ethernet controller. Our final tests limited the memory on boot-up to 4Gb and the bug is still there so we think it may well be some interaction with the Ethernet controller. The motherboard we have has a BroadcomBCM5704C 10/100/1000 based card on board. Again this works fine initially but then we get a very dramatic failure with no warning messages and the system falls over. There are still a few issues to be ironed out with the FreeBSD 5.x on AMD64 the latest STABLE/PRE-RELEASE is much improved but be aware there may be issues. We will be waiting a few more weeks before re-trying these tests to see if the latest fixes that have been discussed have solved our problems. _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
