hi, i''m having some problems on using dvfs in Xen 4.0. i''m running Ubuntu Server 10.04 with Xen 4.0.0 and Linux 2.6.32.10 paravirt_ops dom0 (i followed the install steps from http://lists.xensource.com/archives/html/xen-users/2010-03/msg00878.html, but I used the Xen 4.0.0 version from http://www.xen.org/products/xen_source.html) The CPU model is: Intel(R) Core(TM) i5 CPU 750 @ 2.67GHz (with 4 cores) When I type "xenpm get-cpufreq-para", it returns: cpu id : 0 affected_cpus : *0 cpuinfo frequency : max [2793000] min [1197000] cur [1197000] scaling_driver : acpi-cpufreq scaling_avail_gov : userspace performance powersave ondemand current_governor : ondemand ondemand specific : sampling_rate : max [10000000] min [10000] cur [20000] up_threshold : 80 turbo mode : enabled scaling_avail_freq : 2793000 2660000 2527000 2394000 2261000 2128000 1995000 1862000 1729000 1596000 1463000 1330000 *1197000 scaling frequency : max [2793000] min [1197000] cur [1197000] cpu id : 1 affected_cpus : 1 cpuinfo frequency : max [2793000] min [1197000] cur [1197000] scaling_driver : acpi-cpufreq scaling_avail_gov : userspace performance powersave ondemand current_governor : ondemand ondemand specific : sampling_rate : max [10000000] min [10000] cur [20000] up_threshold : 80 turbo mode : enabled scaling_avail_freq : 2793000 2660000 2527000 2394000 2261000 2128000 1995000 1862000 1729000 1596000 1463000 1330000 *1197000 scaling frequency : max [2793000] min [1197000] cur [1197000] [CPU2] failed to get cpufreq parameter [CPU3] failed to get cpufreq parameter from "xm dmesg" (attached in the email msg) i noticed these two error lines: (XEN) cpufreq fail to add CPU2:incorrect _PSD(254:0), expect(254/4) (XEN) cpufreq fail to add CPU3:incorrect _PSD(254:0), expect(254/4) does anyone know any solution or tips to address this issue? thanks, vinicius _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel