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From: "Doug Smythies" <dsmythies@telus.net>
To: "'Rafael J. Wysocki'" <rjw@rjwysocki.net>
Cc: "'LKML'" <linux-kernel@vger.kernel.org>,
	"'Viresh Kumar'" <viresh.kumar@linaro.org>,
	"'Srinivas Pandruvada'" <srinivas.pandruvada@linux.intel.com>,
	"'Peter Zijlstra'" <peterz@infradead.org>,
	"'Giovanni Gherdovich'" <ggherdovich@suse.com>,
	"'Linux PM'" <linux-pm@vger.kernel.org>
Subject: RE: [PATCH v2 0/3] cpufreq: Allow drivers to receive more information from the governor
Date: Thu, 17 Dec 2020 07:26:49 -0800	[thread overview]
Message-ID: <000901d6d489$0c26dd50$247497f0$@net> (raw)
In-Reply-To: <3827230.0GnL3RTcl1@kreacher>

On 2020.12.14 12:02 Rafael J. Wysocki wrote:

> Hi,

Hi Rafael,

V2 test results below are new, other results are partially re-stated:

For readers that do not want to read on, I didn't find anything different than with
the other versions. This was more just due diligence.

Legend:

hwp: Kernel 5.10-rc6, HWP enabled; intel_cpufreq
rfc (or rjw): Kernel 5.10-rc6 + this patch set, HWP enabled; intel_cpu-freq; schedutil
no-hwp: Kernel 5.10-rc6, HWP disabled; intel_cpu-freq
acpi (or acpi-cpufreq): Kernel 5.10-rc6, HWP disabled; acpi-cpufreq; schedutil
patch: Kernel 5.10-rc7 + V1 patch set, HWP enabled; intel_cpu-freq; schedutil
v2: Kernel 5.10-rc7 + V2 patch set, HWP enabled; intel_cpu-freq; schedutil

Fixed work packet, fixed period, periodic workflow, load sweep up/down:

load work/sleep frequency: 73 Hertz:

hwp: Average: 12.00822 watts
rjw: Average: 10.18089 watts
no-hwp: Average: 10.21947 watts
acpi-cpufreq: Average:  9.06585 watts
patch: Average: 10.26060 watts
v2: Average: 10.50444

load work/sleep frequency: 113 Hertz:

hwp: Average: 12.01056
rjw: Average: 10.12303
no-hwp: Average: 10.08228
acpi-cpufreq: Average:  9.02215
patch: Average: 10.27055
v2: Average: 10.31097

load work/sleep frequency: 211 Hertz:

hwp: Average: 12.16067
rjw: Average: 10.24413
no-hwp: Average: 10.12463
acpi-cpufreq: Average:  9.19175
patch: Average: 10.33000
v2: Average: 10.39811

load work/sleep frequency: 347 Hertz:

hwp: Average: 12.34169
rjw: Average: 10.79980
no-hwp: Average: 10.57296
acpi-cpufreq: Average:  9.84709
patch: Average: 10.67029
v2: Average: 10.93143

load work/sleep frequency: 401 Hertz:

hwp: Average: 12.42562
rjw: Average: 11.12465
no-hwp: Average: 11.24203
acpi-cpufreq: Average: 10.78670
patch: Average: 10.94514
v2: Average: 11.50324


Serialized single threaded via PIDs per second method:
A.K.A fixed work packet, variable period
Results:

Execution times (seconds. Less is better):

no-hwp:

performance: Samples: 382  ; Average: 10.54450  ; Stand Deviation:  0.01564 ; Maximum: 10.61000 ; Minimum: 10.50000

schedutil: Samples: 293  ; Average: 13.73416  ; Stand Deviation:  0.73395 ; Maximum: 15.46000 ; Minimum: 11.68000
acpi: Samples: 253  ; Average: 15.94889  ; Stand Deviation:  1.28219 ; Maximum: 18.66000 ; Minimum: 12.04000

hwp:

schedutil: Samples: 380  ; Average: 10.58287  ; Stand Deviation:  0.01864 ; Maximum: 10.64000 ; Minimum: 10.54000
patch: Samples: 276  ; Average: 14.57029 ; Stand Deviation:  0.89771 ; Maximum: 16.04000 ; Minimum: 11.68000
rfc: Samples: 271  ; Average: 14.86037  ; Stand Deviation:  0.84164 ; Maximum: 16.04000 ; Minimum: 12.21000
v2: Samples: 274  ; Average: 14.67978  ; Stand Deviation:  1.03378 ; Maximum: 16.07000 ; Minimum: 11.43000

Power (watts. More indicates higher CPU frequency and better performance. Sample time = 1 second.):

no-hwp:

performance: Samples: 4000  ; Average: 25.41355  ; Stand Deviation:  0.22156 ; Maximum: 26.01996 ; Minimum: 24.08807

schedutil: Samples: 4000  ; Average: 12.58863  ; Stand Deviation:  5.48600 ; Maximum: 25.50934 ; Minimum:  7.54559
acpi: Samples: 4000  ; Average:  9.57924  ; Stand Deviation:  5.41157 ; Maximum: 25.06366 ; Minimum:  5.51129

hwp:

schedutil: Samples: 4000  ; Average: 25.24245  ; Stand Deviation:  0.19539 ; Maximum: 25.93671 ; Minimum: 24.14746
patch: Samples: 4000  ; Average: 11.07225  ; Stand Deviation:  5.63142 ; Maximum: 24.99493 ; Minimum:  3.67548
rfc: Samples: 4000  ; Average: 10.35842  ; Stand Deviation:  4.77915 ; Maximum: 24.95953 ; Minimum:  7.26202
v2: Samples: 4000  ; Average: 10.98284  ; Stand Deviation:  5.48859 ; Maximum: 25.76331 ; Minimum:  7.53790



  parent reply	other threads:[~2020-12-17 15:27 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-07 16:25 [PATCH v1 0/4] cpufreq: Allow drivers to receive more information from the governor Rafael J. Wysocki
2020-12-07 16:28 ` [PATCH v1 1/4] cpufreq: schedutil: Add util to struct sg_cpu Rafael J. Wysocki
2020-12-08  8:33   ` Viresh Kumar
2020-12-09 17:17     ` Rafael J. Wysocki
2020-12-07 16:29 ` [PATCH v1 2/4] cpufreq: schedutil: Adjust utilization instead of frequency Rafael J. Wysocki
2020-12-08  8:51   ` Viresh Kumar
2020-12-08 17:01     ` Rafael J. Wysocki
2020-12-09  5:16       ` Viresh Kumar
2020-12-09 15:32         ` Rafael J. Wysocki
2020-12-14 11:07           ` Viresh Kumar
2020-12-07 16:35 ` [PATCH v1 3/4] cpufreq: Add special-purpose fast-switching callback for drivers Rafael J. Wysocki
2020-12-08  9:02   ` Viresh Kumar
2020-12-15  4:16     ` Viresh Kumar
2020-12-15 15:38       ` Rafael J. Wysocki
2020-12-07 16:38 ` [PATCH v1 4/4] cpufreq: intel_pstate: Implement the ->adjust_perf() callback Rafael J. Wysocki
2020-12-08 12:43   ` Peter Zijlstra
2020-12-08 17:10     ` Rafael J. Wysocki
2020-12-08 16:30 ` [PATCH v1 0/4] cpufreq: Allow drivers to receive more information from the governor Giovanni Gherdovich
2020-12-08 17:13   ` Rafael J. Wysocki
2020-12-08 19:14     ` Doug Smythies
2020-12-13 19:12       ` Doug Smythies
2020-12-18 15:32       ` Peter Zijlstra
2020-12-14 20:01 ` [PATCH v2 0/3] " Rafael J. Wysocki
2020-12-14 20:04   ` [PATCH v2 1/3] cpufreq: schedutil: Add util to struct sg_cpu Rafael J. Wysocki
2020-12-14 20:08   ` [PATCH v2 2/3] cpufreq: Add special-purpose fast-switching callback for drivers Rafael J. Wysocki
2020-12-14 20:09   ` [PATCH v2 3/3] cpufreq: intel_pstate: Implement the ->adjust_perf() callback Rafael J. Wysocki
2020-12-15  3:29     ` Srinivas Pandruvada
2020-12-15  4:16   ` [PATCH v2 0/3] cpufreq: Allow drivers to receive more information from the governor Viresh Kumar
2020-12-17 15:26   ` Doug Smythies [this message]
2020-12-21 10:41     ` Rafael J. Wysocki
2020-12-18 16:11   ` Giovanni Gherdovich
2020-12-21 16:11     ` Rafael J. Wysocki
2020-12-23 13:06       ` Giovanni Gherdovich
2020-12-28 19:11         ` Rafael J. Wysocki

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