From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stratos Karafotis Subject: Re: [PATCH 0/2] cpufreq: ondemand: Eliminate the deadband effect Date: Sun, 13 Jul 2014 19:54:43 +0300 Message-ID: <53C2B9D3.6040500@semaphore.gr> References: <1404147574-17422-1-git-send-email-stratosk@semaphore.gr> <000001cf9de8$43925230$cab6f690$@net> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from sema.semaphore.gr ([78.46.194.137]:35984 "EHLO sema.semaphore.gr" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1753903AbaGMQyt (ORCPT ); Sun, 13 Jul 2014 12:54:49 -0400 In-Reply-To: <000001cf9de8$43925230$cab6f690$@net> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: Doug Smythies , rjw@rjwysocki.net, viresh.kumar@linaro.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org Hi Doug, On 12/07/2014 06:45 =CE=BC=CE=BC, Doug Smythies wrote: >=20 > On 2014.07.30 10:00 Stratos Karafotis wrote: >=20 >> This patchset changes slightly the calculation of target frequency t= o >> eliminate the deadband effect (explained in patch 2 changelog) that = it >> seems to slow down the CPU in low and medium loads. >> >> Patch 1 introduces a new relation (RELATION_C) for the next frequenc= y >> selection, which chooses the closest frequency to target. >> >> Patch 2 is the actual change to ondemand governor. >=20 >> You may find graphs with the 'deadband' effect and benchmark results= : >> https://docs.google.com/spreadsheets/d/16kDBh5lyc6YvBnoS1hUa1t2O38z0= xrWvaEj5XtJ8auw/edit#gid=3D2072493052 >=20 > I did the same benchmark tests before (without) and after (with) this= patch set on my i7-2600K system. > I added the results, which are similar to Stratos', under a new "benc= hmark" tab on the spreadsheet. Thank you very much for your benchmarks! Stratos