From owner-freebsd-questions Fri Dec 28 16:24:18 2001 Delivered-To: freebsd-questions@freebsd.org Received: from monorchid.lemis.com (monorchid.lemis.com [192.109.197.75]) by hub.freebsd.org (Postfix) with ESMTP id 64D0537B429; Fri, 28 Dec 2001 16:23:42 -0800 (PST) Received: by monorchid.lemis.com (Postfix, from userid 1004) id B052F786E4; Sat, 29 Dec 2001 10:53:40 +1030 (CST) Date: Sat, 29 Dec 2001 10:53:40 +1030 From: Greg Lehey To: Glenn Johnson Cc: FreeBSD Questions , FreeBSD Hackers Subject: Re: Does FreeBSD have a problem with some AMD processors? Message-ID: <20011229105340.K48518@monorchid.lemis.com> References: <20011228181009.F95692@monorchid.lemis.com> <20011228204612.GA1226@gforce.johnson.home> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20011228204612.GA1226@gforce.johnson.home> User-Agent: Mutt/1.3.23i Organization: The FreeBSD Project Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-418-838-708 WWW-Home-Page: http://www.FreeBSD.org/ X-PGP-Fingerprint: 6B 7B C3 8C 61 CD 54 AF 13 24 52 F8 6D A4 95 EF Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Friday, 28 December 2001 at 14:46:12 -0600, Glenn Johnson wrote: > On Fri, Dec 28, 2001 at 06:10:09PM +1030, Greg Lehey wrote: > >> I've been using AMD processors almost exclusively in my main work >> machines for over 4 years, and I've been very happy with them. I'm >> currently running a K6/233, a K6/333, an Athlon 750, a Duron 850 and >> an Athlon XP 1700. Last August, though, I bought a machine which gave >> me a lot of trouble, the Duron 850 mentioned above. I found that it >> would freeze for no apparent reason. I established that it wasn't the >> memory by taking the memory of another machine and running it like >> that; it made no difference. I ended up also changing the motherboard >> and the processor, but the hangs continued. I could expect a hang >> within 8 hours when doing 'make release' >> >> Just for the fun of it, I tried running Linux on it. I've been >> running a kernel build and 'make clean' on it now for 36 hours, and >> it's still running fine. Yesterday some Linux friends of mine came >> around and looked at it and told me that the Linux kernel I was >> running on the machine (2.4.16) had had a number of AMD-specific >> fixes put in. He didn't go into more detail, unfortunately, but I'll >> ask him again when I have time: it could be something relating to >> chipset bugs we have seen and fixed. It would help to know, though, >> if other people are experiencing similar problems. Please let me >> know if you're having problems with AMD processors which seem to be >> specific to FreeBSD, especially if they're hangs (i.e. the machine >> stops reacting, but the display still shows the last state, it doesn't >> reboot or panic). > > I have had this exact problem. I have an Epox 8KTA board with a > 1GHz Athlon (Thunderbird) with 256MB of PC-133 memory. I would > consistently get random errors, usually during a compilation, using > the default BIOS settings. After fiddling with some of the BIOS > options, such as enabling PCI burst, the system runs pretty stable. > However, occasionally I will get that freeze that you refer to during a > buildworld. As far as I can tell though if I set the memory clock to > 100MHz the problem goes away completely, or at least I have not observed > it happen yet. This is a Duron, so it has a 100 MHz memory clock anyway. Greg -- When replying to this message, please copy the original recipients. If you don't, I may ignore the reply. For more information, see http://www.lemis.com/questions.html See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message