All of lore.kernel.org
 help / color / mirror / Atom feed
From: Lukasz Luba <lukasz.luba@arm.com>
To: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-samsung-soc@vger.kernel.org
Cc: lukasz.luba@arm.com, willy.mh.wolff.ml@gmail.com,
	k.konieczny@samsung.com, cw00.choi@samsung.com,
	b.zolnierkie@samsung.com, krzk@kernel.org, chanwoo@kernel.org,
	myungjoo.ham@samsung.com, kyungmin.park@samsung.com,
	s.nawrocki@samsung.com, kgene@kernel.org
Subject: [PATCH v2 1/2] memory: samsung: exynos5422-dmc: Adjust polling interval and uptreshold
Date: Fri, 10 Jul 2020 20:11:21 +0100	[thread overview]
Message-ID: <20200710191122.11029-2-lukasz.luba@arm.com> (raw)
In-Reply-To: <20200710191122.11029-1-lukasz.luba@arm.com>

In order to react faster and make better decisions under some workloads,
benchmarking the memory subsystem behavior, adjust the polling interval
and upthreshold value used by the simple_ondemand governor.

Reported-by: Willy Wolff <willy.mh.wolff.ml@gmail.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
---
 drivers/memory/samsung/exynos5422-dmc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/memory/samsung/exynos5422-dmc.c b/drivers/memory/samsung/exynos5422-dmc.c
index 93e9c2429c0d..e03ee35f0ab5 100644
--- a/drivers/memory/samsung/exynos5422-dmc.c
+++ b/drivers/memory/samsung/exynos5422-dmc.c
@@ -1466,10 +1466,10 @@ static int exynos5_dmc_probe(struct platform_device *pdev)
 		 * Setup default thresholds for the devfreq governor.
 		 * The values are chosen based on experiments.
 		 */
-		dmc->gov_data.upthreshold = 30;
+		dmc->gov_data.upthreshold = 10;
 		dmc->gov_data.downdifferential = 5;
 
-		exynos5_dmc_df_profile.polling_ms = 500;
+		exynos5_dmc_df_profile.polling_ms = 100;
 	}
 
 
-- 
2.17.1


WARNING: multiple messages have this Message-ID (diff)
From: Lukasz Luba <lukasz.luba@arm.com>
To: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-samsung-soc@vger.kernel.org
Cc: s.nawrocki@samsung.com, b.zolnierkie@samsung.com,
	k.konieczny@samsung.com, krzk@kernel.org, cw00.choi@samsung.com,
	kyungmin.park@samsung.com, willy.mh.wolff.ml@gmail.com,
	myungjoo.ham@samsung.com, chanwoo@kernel.org, kgene@kernel.org,
	lukasz.luba@arm.com
Subject: [PATCH v2 1/2] memory: samsung: exynos5422-dmc: Adjust polling interval and uptreshold
Date: Fri, 10 Jul 2020 20:11:21 +0100	[thread overview]
Message-ID: <20200710191122.11029-2-lukasz.luba@arm.com> (raw)
In-Reply-To: <20200710191122.11029-1-lukasz.luba@arm.com>

In order to react faster and make better decisions under some workloads,
benchmarking the memory subsystem behavior, adjust the polling interval
and upthreshold value used by the simple_ondemand governor.

Reported-by: Willy Wolff <willy.mh.wolff.ml@gmail.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
---
 drivers/memory/samsung/exynos5422-dmc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/memory/samsung/exynos5422-dmc.c b/drivers/memory/samsung/exynos5422-dmc.c
index 93e9c2429c0d..e03ee35f0ab5 100644
--- a/drivers/memory/samsung/exynos5422-dmc.c
+++ b/drivers/memory/samsung/exynos5422-dmc.c
@@ -1466,10 +1466,10 @@ static int exynos5_dmc_probe(struct platform_device *pdev)
 		 * Setup default thresholds for the devfreq governor.
 		 * The values are chosen based on experiments.
 		 */
-		dmc->gov_data.upthreshold = 30;
+		dmc->gov_data.upthreshold = 10;
 		dmc->gov_data.downdifferential = 5;
 
-		exynos5_dmc_df_profile.polling_ms = 500;
+		exynos5_dmc_df_profile.polling_ms = 100;
 	}
 
 
-- 
2.17.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2020-07-10 19:11 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20200710191144epcas1p30f82bf6371f7f09a4e1ea1262234f392@epcas1p3.samsung.com>
2020-07-10 19:11 ` [PATCH v2 0/2] Exynos5422 DMC: adjust to new devfreq monitoring mechanism Lukasz Luba
2020-07-10 19:11   ` Lukasz Luba
2020-07-10 19:11   ` Lukasz Luba [this message]
2020-07-10 19:11     ` [PATCH v2 1/2] memory: samsung: exynos5422-dmc: Adjust polling interval and uptreshold Lukasz Luba
2020-07-20 14:46     ` Krzysztof Kozlowski
2020-07-20 14:46       ` Krzysztof Kozlowski
2020-07-27  8:20       ` Lukasz Luba
2020-07-27  8:20         ` Lukasz Luba
2020-07-10 19:11   ` [PATCH v2 2/2] memory: samsung: exynos5422-dmc: Add module param to control IRQ mode Lukasz Luba
2020-07-10 19:11     ` Lukasz Luba
2020-07-14  7:42     ` Bartlomiej Zolnierkiewicz
2020-07-14  7:42       ` Bartlomiej Zolnierkiewicz
2020-07-14  9:01       ` Lukasz Luba
2020-07-14  9:01         ` Lukasz Luba
2020-07-14  9:32         ` Willy Wolff
2020-07-14  9:32           ` Willy Wolff
2020-07-14  9:50           ` Lukasz Luba
2020-07-14  9:50             ` Lukasz Luba
2020-07-17 11:53         ` Lukasz Luba
2020-07-17 11:53           ` Lukasz Luba
2020-07-17 12:31           ` Bartlomiej Zolnierkiewicz
2020-07-17 12:31             ` Bartlomiej Zolnierkiewicz
2020-07-20 14:46     ` Krzysztof Kozlowski
2020-07-20 14:46       ` Krzysztof Kozlowski
2020-08-03 15:30     ` Marek Szyprowski
2020-08-03 15:30       ` Marek Szyprowski
2020-08-03 15:35       ` Marek Szyprowski
2020-08-03 15:35         ` Marek Szyprowski
2020-08-04  8:06         ` Lukasz Luba
2020-08-04  8:06           ` Lukasz Luba
2020-07-24  1:40   ` [PATCH v2 0/2] Exynos5422 DMC: adjust to new devfreq monitoring mechanism Chanwoo Choi
2020-07-24  1:40     ` Chanwoo Choi
2020-07-27  8:21     ` Lukasz Luba
2020-07-27  8:21       ` Lukasz Luba

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200710191122.11029-2-lukasz.luba@arm.com \
    --to=lukasz.luba@arm.com \
    --cc=b.zolnierkie@samsung.com \
    --cc=chanwoo@kernel.org \
    --cc=cw00.choi@samsung.com \
    --cc=k.konieczny@samsung.com \
    --cc=kgene@kernel.org \
    --cc=krzk@kernel.org \
    --cc=kyungmin.park@samsung.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=linux-samsung-soc@vger.kernel.org \
    --cc=myungjoo.ham@samsung.com \
    --cc=s.nawrocki@samsung.com \
    --cc=willy.mh.wolff.ml@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.