From: Chris Friesen <chris.friesen@windriver.com>
To: Christian Loehle <christian.loehle@arm.com>,
daniel.lezcano@linaro.org, kgene@kernel.org,
krzysztof.kozlowski@linaro.org, linux-pm@vger.kernel.org
Subject: Re: question about behaviour of cpuidle on 6.6...seeing *many* missed estimates
Date: Fri, 27 Jun 2025 08:41:49 -0600 [thread overview]
Message-ID: <d234a1cf-ae50-46d7-ae48-26da6a4f738a@windriver.com> (raw)
In-Reply-To: <7d43a796-d831-430b-92d9-53b3d8351fb6@arm.com>
On 6/27/2025 1:49 AM, Christian Loehle wrote:
> On 6/26/25 19:26, Chris Friesen wrote:
>> Hi,
>>
>> I've got an Ice Lake server running 6.6 PREEMPT_RT, currently using the acpi_idle cpuidle driver and the "menu" governor. I'm seeing some weird behaviour with cpuidle and C-states and was hoping someone might be able to shed some light on what's happening.
>
> Does your kernel include
> 3cd2aa93674e cpuidle: menu: Avoid discarding useful information
> (since v6.6.93)?
It does not. Thanks for the pointer, that commit looks potentially
helpful.
Chris
next prev parent reply other threads:[~2025-06-27 14:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-26 18:26 question about behaviour of cpuidle on 6.6...seeing *many* missed estimates Chris Friesen
2025-06-27 7:49 ` Christian Loehle
2025-06-27 14:41 ` Chris Friesen [this message]
2025-07-08 14:56 ` Chris Friesen
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