On Fri, May 09, 2008 at 08:10:40AM +0200, Christian Zachariasen wrote: > On Fri, May 9, 2008 at 4:55 AM, Nerius Landys <[EMAIL PROTECTED]> wrote: > > > Howdy. I purchased a 1U 10 inch deep server machine a few months ago: > > > > http://www.abmx.com/1u-10inch-deep-supermicro-mini-server-p-366.html?osCsid=80f3951929d5a7ae27a51733627ee18a > > > > The CPU is a Xeon 3xxx dual core 2.4 GHz. The machine has no case fans, by > > design. > > > > It's sitting in a well-ventilated rack in a data center. Oddly, when there > > are no machines below and above it, the machine gets hotter. Seems that > > machines above and below help to cool it down. I have the "coretemp" > > kernel > > module loaded on the FreeBSD 7.0 OS, and I saw that the CPU core temp(s) > > hit > > 70 degrees Celsius during a compile of GCC. Is this too hot? Should I > > complain to the people who assembled the computer? At the time this > > happened there were supposedly no surrounding machines. This machine has > > given me no problems. At idle when conditions are good (meaning A/C is > > working properly and there are machines above and below it) my CPU temps > > are > > below 40. > > _______________________________________________ > > firstname.lastname@example.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > > To unsubscribe, send any mail to " > > [EMAIL PROTECTED]" > > > > As with so many other things in the computer world, it depends. With no case > fans, it's weird that the computer gets colder if it has something above and > underneath it. But there are so many factors when it comes to case > temperatures and air flow that it's nearly impossible to tell why. If > there's a huge cooler on top of the Xeon (Processor wind tunnel), then it > could be that closing the ventilation holes in the top and bottom of the > case makes the air flow more directly from the front to the back of the > case.
Could be or some other bernouli/venturi effect. Many systems will get hot when the cabinet is opened because it breaks the airflow path in some way. ////jerry > > It seems the Xeon shuts down the system automatically if it reaches 105 C. I > don't know if this is any pointer to what a reasonable 100% load-temperature > could be, but I know processors nowadays run much cooler than they used to. > (I'm used to AMD Athlons on or above 70 C idle) > > I'd say you should be fine if you haven't seen any instability at 70 C with > 100% load. > > You could try this if you want to be sure: > > --- > On Tue, Feb 28, 2006 at 12:27:07PM -0800, Don O'Neil wrote: > > What is the best way to 'burn in' or 'stress test' a new system w/ > FreeBSD? > > I'd like to stress test the CPU, Memory, Disk, etc.. To make sure the > > hardware is 100% good before putting it in production. > > Doing something like a buildworld -j64 loop (if you have enough > memory, otherwise reduce -j level to avoid swapping) is going to > exercise your system a fair bit. > > Kris > --- > > > Regards, > Christian Zachariasen > _______________________________________________ > email@example.com mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "[EMAIL PROTECTED]" _______________________________________________ firstname.lastname@example.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"