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From: bugzilla-daemon@kernel.org
To: linux-pm@vger.kernel.org
Subject: [Bug 215729] amd-pstate driver has a much higher idle power consumption for a desktop Zen 3 CPU
Date: Thu, 28 Apr 2022 08:49:40 +0000	[thread overview]
Message-ID: <bug-215729-137361-dkqvhBHJQe@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-215729-137361@https.bugzilla.kernel.org/>

https://bugzilla.kernel.org/show_bug.cgi?id=215729

Joe (sujinzhou2008@126.com) changed:

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                 CC|                            |sujinzhou2008@126.com

--- Comment #8 from Joe (sujinzhou2008@126.com) ---
Hello,

I reproduce this issue on my local.  

Your device (CPU family:  25, Model:  33) should be shared memory solution with
AMD P-state driver. Updating CPPC request with shared memory will need more
energy  than writing MSR register directly. We are checking this issue now.

For ondemand governor, could you please try to reduce the sampling_rate and
then check to energy consumption again? Thanks a lot!

Here is the command 

cd /sys/devices/system/cpu/cpufreq/ondemand
echo 50000 > sampling_rate

Thanks
Joe

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  parent reply	other threads:[~2022-04-28  8:49 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-22 23:58 [Bug 215729] New: amd-pstate driver has a much higher idle power consumption for a desktop Zen 3 CPU bugzilla-daemon
2022-03-22 23:59 ` [Bug 215729] " bugzilla-daemon
2022-03-23  0:01 ` bugzilla-daemon
2022-03-23  2:09 ` bugzilla-daemon
2022-03-23 15:35 ` bugzilla-daemon
2022-03-23 15:41 ` bugzilla-daemon
2022-03-23 15:58 ` bugzilla-daemon
2022-03-23 16:04 ` bugzilla-daemon
2022-04-28  8:49 ` bugzilla-daemon [this message]
2022-05-09  8:38 ` bugzilla-daemon
2023-07-07 13:24 ` bugzilla-daemon
2023-09-15 10:24 ` bugzilla-daemon

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