Thomas Sparrevohn wrote on Sat, Dec 08, 2007 at 05:28:18PM +0000: > > Hi > > There something weird going on - at minimal workloads my system gets very very hot - The system is watercooled, 4 Fan's etc > its a quad core QX6700 - make buildkernel - will make the fans run at highest speed (its impossibly to be in the room at the same time). > > There are no problems when running other OS'es - Are anybody else having this kind of problems (PS its a relatively new thing - maybe 2 weeks)? What does the coretemp module report for the real CPU temperature? I think it is perfectly normal for a buildkernel run to kick the CPU fan into highest gear. buildkernel is not a "minimal workload". buildkernel causes 100% load on one core even in non-parallel, and that one certainly gets hot. Since all 4 cores are in one CPU package, off the one CPU fan goes. I am curious why do you have temperature-controlled fans when you use watercooling. If the other OSes don't do this then they probably have some powermanagement going on and don't think that a buildkernel is worth kicking in high gear. You might want to compare with something that runs on both FreeBSD and Linux, such as a drystones run, or a Linux kernel compile (which you can run in FreeBSD's Linux emulation for comparision). Another way to track down a difference between FreeBSD and Linux is monitor the CPU frequency in /proc/cpuinfo on Linux. By default the Linux kernel on most distributions messes with that on Core2 systems. Martin -- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Martin Cracauer <cracauer_at_cons.org> http://www.cons.org/cracauer/ FreeBSD - where you want to go, today. http://www.freebsd.org/Received on Mon Dec 10 2007 - 19:48:50 UTC
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