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Message-ID: <1513010.lqhBUJhHsL@vostro.rjw.lan> Date: Wed, 23 Jul 2014 01:50:28 +0200 From: "Rafael J. Wysocki" <rjw@...ysocki.net> To: Stratos Karafotis <stratosk@...aphore.gr> Cc: viresh.kumar@...aro.org, linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 0/2] cpufreq: ondemand: Eliminate the deadband effect On Monday, June 30, 2014 07:59:32 PM Stratos Karafotis wrote: > Hi all, > > This patchset changes slightly the calculation of target frequency to > 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 frequency > selection, which chooses the closest frequency to target. > > Patch 2 is the actual change to ondemand governor. > > You may find graphs with the 'deadband' effect and benchmark results: > https://docs.google.com/spreadsheets/d/16kDBh5lyc6YvBnoS1hUa1t2O38z0xrWvaEj5XtJ8auw/edit#gid=2072493052 > > Thanks > > > Stratos Karafotis (2): > cpufreq: Introduce new relation for freq selection > cpufreq: ondemand: Eliminate the deadband effect in low loads > > drivers/cpufreq/cpufreq_ondemand.c | 11 +++++++---- > drivers/cpufreq/freq_table.c | 12 +++++++++++- > include/linux/cpufreq.h | 1 + > 3 files changed, 19 insertions(+), 5 deletions(-) OK, I've queued up these two patches for 3.17. We'll see if anyone sees any problems related to them. Thanks! -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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