David Vengerov wrote: > Can someone please help me figure out if xeon.sfbay can be used for > studying how DVFS works? The site > http://blogs.sun.com/mhaywood/entry/introducing_speedstep_on_solaris > suggests that Intel Xeon is capable of supporting several frequencies. > However, when I run "kstat -m cpu_info -s supported_frequencies_Hz", I > get the following: > > module: cpu_info instance: 0 > name: cpu_info0 class: misc > supported_frequencies_Hz 1793370470 > > module: cpu_info instance: 1 > name: cpu_info1 class: misc > supported_frequencies_Hz 1793370470 > > module: cpu_info instance: 2 > name: cpu_info2 class: misc > supported_frequencies_Hz 1793370470 > > module: cpu_info instance: 3 > name: cpu_info3 class: misc > supported_frequencies_Hz 1793370470
Yes, However that same blog also says: "Enhanced Intel SpeedStep on Solaris is only supported on systems running Intel processors that belong to Family 0xF - Models >=0x3 or Family 0x6 - Models >= E." $ kstat -m cpu_info -s implementation module: cpu_info instance: 0 name: cpu_info0 class: misc implementation x86 (chipid 0x0 GenuineIntel F27 family 15 model 2 step 7 clock 1793 MHz) module: cpu_info instance: 1 name: cpu_info1 class: misc implementation x86 (chipid 0x3 GenuineIntel F27 family 15 model 2 step 7 clock 1793 MHz) module: cpu_info instance: 2 name: cpu_info2 class: misc implementation x86 (chipid 0x0 GenuineIntel F27 family 15 model 2 step 7 clock 1793 MHz) module: cpu_info instance: 3 name: cpu_info3 class: misc implementation x86 (chipid 0x3 GenuineIntel F27 family 15 model 2 step 7 clock 1793 MHz) Notiice that these CPUs are Family F Model 2. Yes, there are different Xeon models. And that is the reason that we list our support by family/model rather than by makreting name. Mark > > which suggests that only one frequency is supported. The kernel > version is: SunOS 5.11 snv_79. Is it possible that a later version of > Nevada is required for DVFS? > > Thanks, > > David > > > ------------------------------------------------------------------------ > > _______________________________________________ > pm-discuss mailing list > pm-discuss at opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/pm-discuss >