Description of problem: My Duron 1000 machine is running a lot hotter since I installed f7. It used to have a 54-58C CPU temperature, now it is 58-62C. I noticed that this is reduced to nearly the previous value if I use nohz=off Version-Release number of selected component (if applicable): kernel-2.6.21-1.3228.fc7 How reproducible: Normal computer use Additional info: http://smolt.fedoraproject.org/show?UUID=e2b43b83-2dce-4a57-bc92-16f7d6cabb1d
Is cpufreq reducing the CPU speed when nohz is enabled? Load the cpufreq_stats module ('modprobe cpufreq_stats'), then look in: /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state Compare with and without nohz.
I don't think that my Duron supports cpufreq. Here is the /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 6 model : 7 model name : AMD Duron(tm) stepping : 0 cpu MHz : 999.050 cache size : 64 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow up ts bogomips : 1999.76 clflush size : 32
Can you please provide a full boot log and the output of /proc/timer_list, when booted with nohz enabled ?
Hello, I'm reviewing this bug as part of the kernel bug triage project, an attempt to isolate current bugs in the fedora kernel. http://fedoraproject.org/wiki/KernelBugTriage I am CC'ing myself to this bug and will try and assist you in resolving it if I can. There hasn't been much activity on this bug for a while. Could you tell me if you are still having problems with the latest kernel? If the problem no longer exists then please close this bug or I'll do so in a few days if there is no additional information lodged. Cheers Chris
I am closing this bug now. I don't have the time to debug it at the moment as it takes a long time to notice changes. I am also not sure if the problem still exists.