Hi, a bug drives me crazy on my laptop. Sometimes the CPU drops the frequency to 800 Mhz, the CPU gets full overload and the machine is almost unresponsive. Several processes (daemons, programs) eat the CPU at the same time without any sane reason (e.g Amarok, Xorg, kwin, pulseaudio, firefox...), if I run the oprofile during these conditions, it reports >50 % spend in the kernel. (I will try to run oprofile to profile the kernel also tomorrow.) No temperature problems, but cpufreq-info shows something unusual, is this possible?: cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to cpufreq@xxxxxxxxxxxxxxx, please. analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 1 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 10.0 us. hardware limits: 800 MHz - 2.27 GHz available frequency steps: 2.27 GHz, 2.27 GHz, 1.60 GHz, 800 MHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 2.27 GHz and 2.27 GHz. The governor "performance" may decide which speed to use within this range. current CPU frequency is 800 MHz (asserted by call to hardware). cpufreq stats: 2.27 GHz:18.57%, 2.27 GHz:24.97%, 1.60 GHz:6.82%, 800 MHz:49.64% (295) analyzing CPU 1: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 1 CPUs which need to have their frequency coordinated by software: 1 maximum transition latency: 10.0 us. hardware limits: 800 MHz - 2.27 GHz available frequency steps: 2.27 GHz, 2.27 GHz, 1.60 GHz, 800 MHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 2.27 GHz and 2.27 GHz. The governor "performance" may decide which speed to use within this range. current CPU frequency is 800 MHz (asserted by call to hardware). cpufreq stats: 2.27 GHz:76.79%, 2.27 GHz:1.63%, 1.60 GHz:2.69%, 800 MHz:18.89% (25) My laptop is a Dell Latitude E4300. I run Ubuntu Natty 32 bit with the shipped kernel 2.6.38-8-generic-pae. lshw shows: description: CPU product: Intel(R) Core(TM)2 Duo CPU P9300 @ 2.26GHz vendor: Intel Corp. physical id: 400 bus info: cpu@0 version: 6.7.6 serial: 0001-0676-0000-0000-0000-0000 slot: Microprocessor size: 800MHz capacity: 800MHz width: 64 bits clock: 266MHz capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 lahf_lm tpr_shadow vnmi flexpriority cpufreq configuration: cores=2 enabledcores=2 id=0 threads=2 Thanks, Csaba -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
