Date: Fri, 10 Dec 2004 08:32:28 -0600 (CST) From: klr@6s-gaming.com To: freebsd-questions@FreeBSD.org, freebsd-smp@freebsd.org, freebsd-hackers@freebsd.org Subject: HTT/SMP Dual Xeon systems unstable Message-ID: <56637.81.84.175.77.1102689148.squirrel@81.84.175.77>
next in thread | raw e-mail | index | archive | help
Hi, I'm sorry for typing this mail for the third time, I'm not sure if the other mails did reach the list. The domain I was using to send emails has just expired. Please cc me, as I'm not subscribed to the list with this email. I have a Dual Xeon 2.4 and a Dual Xeon 2.8 servers running with HyperThreading, ACPI, and SMP enabled. The 2.8 server won't stand for more than 5 days without crashing, and the 2.4 server was up 30 days crashed, now was up 12 days, and crashed. I didn't have a debugging kernel, I'll be building one when the datacenter reboots the server. I also don't have any panic messages.. I have, however, a few questions: - machdep.cpu_idle_hlt - I've seen a lot on google about this sysctl, but still don't fully understand it. What does this sysctl really changes? - HyperThreading - Do I really have a performance increase with HTT turned on? I've heard it can penalize performance because the scheduler isn't optimized for logical CPUs. Does having HTT enabled impacts the stability of the system? - ACPI - I'll be disabling ACPI along with HTT to see if the server doesn't crash for awhile. Is ACPI on 5.3-STABLE (around November 1st, it was pre-release) still a problem? Last but not the least, my 5.3-STABLE version is from a few days before the release. Since I had created a few jails by then, I didn't upgrade the system to use the -RELEASE. Was there any last-standing problem a few days before the release that could be causing my instability problems? Please share some common dual processor system knowledge, perhaps I'm missing something really obvious and making these servers unstable. Regards, Hugo
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?56637.81.84.175.77.1102689148.squirrel>