linux on xeon

$ uname -aLinux lanmaster 2.6.22-14-generic #1 SMP Sun Oct 14 21:45:15 GMT 2007 x86_64 GNU/Linux

$ cat /proc/cpuinfoprocessor : 0vendor_id : GenuineIntelcpu family : 15model : 4model name : Intel(R) Xeon(TM) CPU 3.20GHzstepping : 1cpu MHz : 3200.210cache size : 1024 KBphysical id : 0siblings : 2core id : 0cpu cores : 1fpu : yesfpu_exception : yescpuid level : 5wp : yesflags : fpu 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 syscall nx lm constant_tsc pni monitor ds_cpl cid cx16 xtprbogomips : 6404.88clflush size : 64cache_alignment : 128address sizes : 36 bits physical, 48 bits virtualpower management:

processor : 1vendor_id : GenuineIntelcpu family : 15model : 4model name : Intel(R) Xeon(TM) CPU 3.20GHzstepping : 1cpu MHz : 3200.210cache size : 1024 KBphysical id : 3siblings : 2core id : 0cpu cores : 1fpu : yesfpu_exception : yescpuid level : 5wp : yesflags : fpu 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 syscall nx lm constant_tsc pni monitor ds_cpl cid cx16 xtprbogomips : 6400.81clflush size : 64cache_alignment : 128address sizes : 36 bits physical, 48 bits virtualpower management:

processor : 2vendor_id : GenuineIntelcpu family : 15model : 4model name : Intel(R) Xeon(TM) CPU 3.20GHzstepping : 1cpu MHz : 3200.210cache size : 1024 KBphysical id : 0siblings : 2core id : 0cpu cores : 1fpu : yesfpu_exception : yescpuid level : 5wp : yesflags : fpu 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 syscall nx lm constant_tsc pni monitor ds_cpl cid cx16 xtprbogomips : 6400.78clflush size : 64cache_alignment : 128address sizes : 36 bits physical, 48 bits virtualpower management:

processor : 3vendor_id : GenuineIntelcpu family : 15model : 4model name : Intel(R) Xeon(TM) CPU 3.20GHzstepping : 1cpu MHz : 3200.210cache size : 1024 KBphysical id : 3siblings : 2core id : 0cpu cores : 1fpu : yesfpu_exception : yescpuid level : 5wp : yesflags : fpu 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 syscall nx lm constant_tsc pni monitor ds_cpl cid cx16 xtprbogomips : 6400.85clflush size : 64cache_alignment : 128address sizes : 36 bits physical, 48 bits virtualpower management:

dmesg grep -i throttling[ 55.718656] ACPI: Processor [CPU0] (supports 8 throttling states)[ 55.718683] ACPI: Processor [CPU1] (supports 8 throttling states)[ 55.718704] ACPI: Processor [CPU2] (supports 8 throttling states)[ 55.718725] ACPI: Processor [CPU3] (supports 8 throttling states)

$ lsmod grep -i cpufreqcpufreq_stats 8160 0cpufreq_conservative 9608 0cpufreq_userspace 6048 0cpufreq_powersave 3072 0cpufreq_ondemand 10896 0freq_table 6464 2 cpufreq_stats,cpufreq_ondemand

$ sudo modprobe acpi_cpufreqFATAL: Error inserting acpi_cpufreq (/lib/modules/2.6.22-14-generic/kernel/arch/x86_64/kernel/cpufreq/acpi-cpufreq.ko): No such device

$ sudo cpufreq-selector -g ondemandNo cpufreq support