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From: Valentin Schneider <valentin.schneider@arm.com>
To: Peter Zijlstra <peterz@infradead.org>,
	Patrick Bellasi <patrick.bellasi@arm.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>,
	Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>,
	Juri Lelli <juri.lelli@redhat.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@suse.de>,
	Len Brown <lenb@kernel.org>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Mel Gorman <mgorman@techsingularity.net>,
	the arch/x86 maintainers <x86@kernel.org>,
	Linux PM <linux-pm@vger.kernel.org>,
	Viresh Kumar <viresh.kumar@linaro.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [RFC/RFT] [PATCH 02/10] cpufreq: intel_pstate: Conditional frequency invariant accounting
Date: Fri, 18 May 2018 15:09:21 +0100	[thread overview]
Message-ID: <efcccd63-d952-db31-29e7-1566e2b5089f@arm.com> (raw)
In-Reply-To: <20180518112919.GI12217@hirez.programming.kicks-ass.net>

Hi,

On 18/05/18 12:29, Peter Zijlstra wrote:
> On Fri, May 18, 2018 at 11:57:42AM +0100, Patrick Bellasi wrote:
>> Thus, my simple (maybe dumb) questions are:
>> - why can't we just fold turbo boost frequency into the existing concepts?
>> - what are the limitations of such a "simple" approach?
> 
> Perhaps... but does this not further complicate the whole capacity vs
> util thing we already have in say the misfit patches?

What do you mean by that ? Bear in mind, I'm a complete stranger to turbo
boost so I fail to see why, as Patrick puts it, it can't fit within the
existing concepts (i.e. max util is 1024 but is only reachable when turbo
boosted).

  parent reply	other threads:[~2018-05-18 14:09 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-16  4:49 [RFC/RFT] [PATCH 00/10] Intel_pstate: HWP Dynamic performance boost Srinivas Pandruvada
2018-05-16  4:49 ` [RFC/RFT] [PATCH 01/10] x86,sched: Add support for frequency invariance Srinivas Pandruvada
2018-05-16  9:56   ` Peter Zijlstra
2018-05-16  4:49 ` [RFC/RFT] [PATCH 02/10] cpufreq: intel_pstate: Conditional frequency invariant accounting Srinivas Pandruvada
2018-05-16  7:16   ` Peter Zijlstra
2018-05-16  7:29     ` Peter Zijlstra
2018-05-16  9:07       ` Rafael J. Wysocki
2018-05-16 17:32         ` Srinivas Pandruvada
2018-05-16 15:19   ` Juri Lelli
2018-05-16 15:47     ` Peter Zijlstra
2018-05-16 16:31       ` Juri Lelli
2018-05-17 10:59         ` Juri Lelli
2018-05-17 15:04           ` Juri Lelli
2018-05-17 15:41             ` Srinivas Pandruvada
2018-05-17 16:16               ` Peter Zijlstra
2018-05-17 16:42                 ` Srinivas Pandruvada
2018-05-17 16:56                   ` Rafael J. Wysocki
2018-05-17 18:28                     ` Peter Zijlstra
2018-05-18  7:36                       ` Rafael J. Wysocki
2018-05-18 10:57                       ` Patrick Bellasi
2018-05-18 11:29                         ` Peter Zijlstra
2018-05-18 13:33                           ` Patrick Bellasi
2018-05-30 16:57                             ` Patrick Bellasi
2018-05-18 14:09                           ` Valentin Schneider [this message]
2018-05-16 15:58     ` Srinivas Pandruvada
2018-05-16  4:49 ` [RFC/RFT] [PATCH 03/10] cpufreq: intel_pstate: Utility functions to boost HWP performance limits Srinivas Pandruvada
2018-05-16  7:22   ` Peter Zijlstra
2018-05-16  9:15     ` Rafael J. Wysocki
2018-05-16 10:43       ` Peter Zijlstra
2018-05-16 15:39         ` Srinivas Pandruvada
2018-05-16 15:41     ` Srinivas Pandruvada
2018-05-16  4:49 ` [RFC/RFT] [PATCH 04/10] cpufreq: intel_pstate: Add update_util_hook for HWP Srinivas Pandruvada
2018-05-16  4:49 ` [RFC/RFT] [PATCH 05/10] cpufreq: intel_pstate: HWP boost performance on IO Wake Srinivas Pandruvada
2018-05-16  7:37   ` Peter Zijlstra
2018-05-16 17:55     ` Srinivas Pandruvada
2018-05-17  8:19       ` Peter Zijlstra
2018-05-16  9:45   ` Rafael J. Wysocki
2018-05-16 19:28     ` Srinivas Pandruvada
2018-05-16  4:49 ` [RFC/RFT] [PATCH 06/10] cpufreq / sched: Add interface to get utilization values Srinivas Pandruvada
2018-05-16  6:40   ` Viresh Kumar
2018-05-16 22:25     ` Srinivas Pandruvada
2018-05-16  8:11   ` Peter Zijlstra
2018-05-16 22:40     ` Srinivas Pandruvada
2018-05-17  7:50       ` Peter Zijlstra
2018-05-16  4:49 ` [RFC/RFT] [PATCH 07/10] cpufreq: intel_pstate: HWP boost performance on busy task migrate Srinivas Pandruvada
2018-05-16  9:49   ` Rafael J. Wysocki
2018-05-16 20:59     ` Srinivas Pandruvada
2018-05-16  4:49 ` [RFC/RFT] [PATCH 08/10] cpufreq: intel_pstate: Dyanmically update busy pct Srinivas Pandruvada
2018-05-16  7:43   ` Peter Zijlstra
2018-05-16  7:47   ` Peter Zijlstra
2018-05-16  4:49 ` [RFC/RFT] [PATCH 09/10] cpufreq: intel_pstate: New sysfs entry to control HWP boost Srinivas Pandruvada
2018-05-16  4:49 ` [RFC/RFT] [PATCH 10/10] cpufreq: intel_pstate: enable boost for SKX Srinivas Pandruvada
2018-05-16  7:49   ` Peter Zijlstra
2018-05-16 15:46     ` Srinivas Pandruvada
2018-05-16 15:54       ` Peter Zijlstra
2018-05-17  0:52         ` Srinivas Pandruvada
2018-05-16  6:49 ` [RFC/RFT] [PATCH 00/10] Intel_pstate: HWP Dynamic performance boost Juri Lelli
2018-05-16 15:43   ` Srinivas Pandruvada

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