linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Chanwoo Choi <cw00.choi@samsung.com>
To: Lukasz Luba <lukasz.luba@arm.com>,
	linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-samsung-soc@vger.kernel.org
Cc: willy.mh.wolff.ml@gmail.com, k.konieczny@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: Re: [PATCH 1/2] memory: samsung: exynos5422-dmc: Adjust polling interval and uptreshold
Date: Thu, 9 Jul 2020 13:08:09 +0900	[thread overview]
Message-ID: <fa3f651a-3c2b-188b-e2dc-4fd05ce4a1b7@samsung.com> (raw)
In-Reply-To: <20200708153420.29484-2-lukasz.luba@arm.com>

Hi Lukasz,

On 7/9/20 12:34 AM, Lukasz Luba wrote:
> 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>
> 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;
>  	}
>  
>  
> 

Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>

-- 
Best Regards,
Chanwoo Choi
Samsung Electronics

  reply	other threads:[~2020-07-09  3:56 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-08 15:34 [PATCH 0/2] Exynos5422 DMC: adjust to new devfreq monitoring mechanism Lukasz Luba
2020-07-08 15:34 ` [PATCH 1/2] memory: samsung: exynos5422-dmc: Adjust polling interval and uptreshold Lukasz Luba
2020-07-09  4:08   ` Chanwoo Choi [this message]
2020-07-10  8:34     ` Lukasz Luba
2020-07-10 12:45       ` Krzysztof Kozlowski
2020-07-10 12:56         ` Lukasz Luba
2020-07-10 13:07           ` Krzysztof Kozlowski
2020-07-10 13:49           ` Bartlomiej Zolnierkiewicz
2020-07-10 14:00             ` Lukasz Luba
2020-07-10 14:47               ` Krzysztof Kozlowski
2020-07-10 13:13       ` Marek Szyprowski
2020-07-10 13:19         ` Krzysztof Kozlowski
2020-07-10 13:41           ` Lukasz Luba
2020-07-10 14:49             ` Krzysztof Kozlowski
2020-07-10 15:45               ` Lukasz Luba
2020-07-08 15:34 ` [PATCH 2/2] ARM: dts: exynos: Remove interrupts from DMC controller in Exynos5422 Lukasz Luba
2020-08-17 15:50   ` Krzysztof Kozlowski
2020-08-17 17:17     ` Lukasz Luba
2020-08-21  6:31       ` Krzysztof Kozlowski
2020-08-21  6:32         ` Krzysztof Kozlowski
2020-08-24 11:34           ` Lukasz Luba
2020-10-26 19:57   ` Krzysztof Kozlowski

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=fa3f651a-3c2b-188b-e2dc-4fd05ce4a1b7@samsung.com \
    --to=cw00.choi@samsung.com \
    --cc=b.zolnierkie@samsung.com \
    --cc=chanwoo@kernel.org \
    --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=lukasz.luba@arm.com \
    --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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).