From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?VG9yYWxmIEbDtnJzdGVy?= Subject: does niced processes scales frequency too at the ondemand governor ? Date: Wed, 06 Nov 2013 19:29:18 +0100 Message-ID: <527A8A7E.1050906@gmx.de> Mime-Version: 1.0 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Sender: linux-kernel-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="iso-8859-1" To: cpufreq@vger.kernel.org Cc: Linux PM list , Linux Kernel Running a Gentoo Linux at a 4-core CPU (i5) I realize, that compiling packages using -j4 usually needs twice as long, if I run 4 BOINC processes in the back ground (nice -n 19) too. Even considering effects of invalidation of cache data this seems a too big impact in my eyes. It looks for me like that the BOINC processes scales down the frequency= , when they are running. This behaviour however would be wrong IMO. The frequency should be scaled just by the non-niced foreground processes, right ? --=20 MfG/Sincerely Toralf F=C3=B6rster pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3 From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?VG9yYWxmIEbDtnJzdGVy?= Subject: does niced processes scales frequency too at the ondemand governor ? Date: Wed, 06 Nov 2013 19:29:18 +0100 Message-ID: <527A8A7E.1050906@gmx.de> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Sender: linux-kernel-owner@vger.kernel.org To: cpufreq@vger.kernel.org Cc: Linux PM list , Linux Kernel List-Id: linux-pm@vger.kernel.org Running a Gentoo Linux at a 4-core CPU (i5) I realize, that compiling packages using -j4 usually needs twice as long, if I run 4 BOINC processes in the back ground (nice -n 19) too. Even considering effects of invalidation of cache data this seems a too big impact in my eyes. It looks for me like that the BOINC processes scales down the frequency= , when they are running. This behaviour however would be wrong IMO. The frequency should be scaled just by the non-niced foreground processes, right ? --=20 MfG/Sincerely Toralf F=C3=B6rster pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3