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From: Yuyang Du <yuyang.du@intel.com>
To: Stratos Karafotis <stratosk@semaphore.gr>
Cc: Dirk Brandewie <dirk.brandewie@gmail.com>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Viresh Kumar <viresh.kumar@linaro.org>,
	Dirk Brandewie <dirk.j.brandewie@intel.com>,
	"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Doug Smythies <dsmythies@telus.net>
Subject: Re: [RFC PATCH] cpufreq: intel_pstate: Change the calculation of next pstate
Date: Tue, 13 May 2014 03:34:53 +0800	[thread overview]
Message-ID: <20140512193453.GB9351@intel.com> (raw)
In-Reply-To: <53712F4B.7000101@semaphore.gr>

On Mon, May 12, 2014 at 11:30:03PM +0300, Stratos Karafotis wrote:
> On 09/05/2014 05:56 μμ, Stratos Karafotis wrote:
>
> Next performance state = min_perf + (max_perf - min_perf) * load / 100
> 
Hi,

This formula is fundamentally broken. You need to associate the load with its
frequency.

Thanks,
Yuyang

  reply	other threads:[~2014-05-13  3:39 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-05 23:57 [RFC PATCH] cpufreq: intel_pstate: Change the calculation of next pstate Stratos Karafotis
2014-05-08 20:52 ` Dirk Brandewie
2014-05-09 14:56   ` Stratos Karafotis
2014-05-12 20:30     ` Stratos Karafotis
2014-05-12 19:34       ` Yuyang Du [this message]
2014-05-13  3:59         ` Stratos Karafotis
2014-05-12 20:01           ` Yuyang Du
2014-05-13  4:16             ` Stratos Karafotis
2014-05-12 20:34               ` Yuyang Du
2014-05-17  6:52       ` Stratos Karafotis
     [not found] <bf3034d0-5c89-4ddb-921a-a92a4aed39f8@fmsmsx105.amr.corp.intel.com>
2014-05-12 21:59 ` Yuyang Du
2014-05-13 13:39   ` Stratos Karafotis

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