Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932705AbVJCV5b (ORCPT ); Mon, 3 Oct 2005 17:57:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932713AbVJCV5b (ORCPT ); Mon, 3 Oct 2005 17:57:31 -0400 Received: from ns.tasking.nl ([195.193.207.2]:45545 "EHLO ns.tasking.nl") by vger.kernel.org with ESMTP id S932705AbVJCV51 (ORCPT ); Mon, 3 Oct 2005 17:57:27 -0400 To: linux-kernel@vger.kernel.org Mime-Version: 1.0 X-Newsreader: knews 1.0b.1 Reply-To: dick.streefland@altium.nl (Dick Streefland) Organization: Altium BV X-Face: "`*@3nW;mP[=Z(!`?W;}cn~3M5O_/vMjX&Pe!o7y?xi@;wnA&Tvx&kjv'N\P&&5Xqf{2CaT 9HXfUFg}Y/TT^?G1j26Qr[TZY%v-1A<3?zpTYD5E759Q?lEoR*U1oj[.9\yg_o.~O.$wj:t(B+Q_?D XX57?U,#b,iM$[zX'I(!'VCQM)N)x~knSj>M*@l}y9(tK\rYwdv%~+&*jV"epphm>|q~?ys:g:K#R" 2PuAzy-N9cKM Date: Mon, 03 Oct 2005 21:56:46 -0000 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2646 Lines: 69 I have a new laptop with an AMD Mobile Sempron, and I'm experimenting with the PowerNow! frequency scaling. It seems to work, but on every frequency change, everything stalls for 3-4 seconds, even the X mouse pointer! Keyboard input seems to be buffered though. Is this normal? I'm currently using the builtin frequency scaling "governors" of the kernel with the following settings: echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor echo 15000000 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate echo 1 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/ignore_nice However, using the powernow daemon results in the same behavior. Here are the relevant kernel (2.6.13.2) options: # # CPU Frequency scaling # CONFIG_CPU_FREQ=y CONFIG_CPU_FREQ_TABLE=y CONFIG_CPU_FREQ_DEBUG=y CONFIG_CPU_FREQ_STAT=y CONFIG_CPU_FREQ_STAT_DETAILS=y # CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y CONFIG_CPU_FREQ_GOV_PERFORMANCE=y CONFIG_CPU_FREQ_GOV_POWERSAVE=y CONFIG_CPU_FREQ_GOV_USERSPACE=y CONFIG_CPU_FREQ_GOV_ONDEMAND=y CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y # # CPUFreq processor drivers # CONFIG_X86_ACPI_CPUFREQ=y # CONFIG_X86_POWERNOW_K6 is not set # CONFIG_X86_POWERNOW_K7 is not set CONFIG_X86_POWERNOW_K8=y CONFIG_X86_POWERNOW_K8_ACPI=y # CONFIG_X86_GX_SUSPMOD is not set # CONFIG_X86_SPEEDSTEP_CENTRINO is not set # CONFIG_X86_SPEEDSTEP_ICH is not set # CONFIG_X86_SPEEDSTEP_SMI is not set # CONFIG_X86_P4_CLOCKMOD is not set # CONFIG_X86_CPUFREQ_NFORCE2 is not set # CONFIG_X86_LONGRUN is not set # CONFIG_X86_LONGHAUL is not set This is reported in /var/log/messages: Oct 3 22:04:35 acer kernel: CPU: AMD Mobile AMD Sempron(tm) Processor 3000+ stepping 02 [...] Oct 3 22:04:35 acer kernel: powernow-k8: Found 1 AMD Athlon 64 / Opteron processors (version 1.50.3) Oct 3 22:04:35 acer kernel: powernow-k8: 0 : fid 0xa (1800 MHz), vid 0xa (1300 mV) Oct 3 22:04:35 acer kernel: powernow-k8: 1 : fid 0x8 (1600 MHz), vid 0xc (1250 mV) Oct 3 22:04:35 acer kernel: powernow-k8: 2 : fid 0x0 (800 MHz), vid 0x13 (1075 mV) Oct 3 22:04:35 acer kernel: cpu_init done, current fid 0xa, vid 0xa -- Dick Streefland //// Altium BV dick.streefland@altium.nl (@ @) http://www.altium.com --------------------------------oOO--(_)--OOo--------------------------- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/