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From: Bagas Sanjaya <bagasdotme@gmail.com>
To: Amit Daniel Kachhap <amit.kachhap@gmail.com>,
	Daniel Lezcano <daniel.lezcano@linaro.org>,
	Viresh Kumar <viresh.kumar@linaro.org>,
	Goran <goran.brkuljan@gmail.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux Regressions <regressions@lists.linux.dev>,
	Linux Power Management <linux-pm@vger.kernel.org>
Subject: Fwd: XPS 17 9730 runs significantly warmer on Kernel 6.5-rc3 compared to Kernel 6.4.3
Date: Thu, 27 Jul 2023 21:24:15 +0700	[thread overview]
Message-ID: <107f05b8-0104-501c-130c-4f89f3f8a628@gmail.com> (raw)

Hi,

I notice a regression report on Bugzilla [1]. Quoting from it:

> On my new XPS 17 9730 laptop, I recently installed the Kernel 6.5-rc3. I noticed, however, that during its operation, the laptop was getting significantly warmer than before. I did some analysis using the 'stress' tool to measure and compare the difference in CPU temperatures between Kernel 6.4.3 and Kernel 6.5-rc3. Here are my results:
> 
> OS: Ubuntu 23.10
> CPU: i7-13700H
> 
> kernel 6.4.3:
>                                                                                                                                                                                         
> Initial CPU temperature:
> coretemp-isa-0000
> Core 0:        +47.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 4:        +45.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 8:        +46.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 12:       +46.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 16:       +45.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 20:       +44.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 24:       +44.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 25:       +44.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 26:       +44.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 27:       +44.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 28:       +45.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 29:       +45.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 30:       +45.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 31:       +45.0°C  (high = +100.0°C, crit = +100.0°C)
> Stressing CPU for 30 seconds...
> stress: info: [4858] dispatching hogs: 14 cpu, 0 io, 0 vm, 0 hdd
> stress: info: [4858] successful run completed in 30s
> CPU temperature immediately after stress test:
> coretemp-isa-0000
> Core 0:        +67.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 4:        +76.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 8:        +69.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 12:       +77.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 16:       +69.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 20:       +76.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 24:       +68.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 25:       +68.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 26:       +68.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 27:       +68.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 28:       +71.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 29:       +71.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 30:       +71.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 31:       +71.0°C  (high = +100.0°C, crit = +100.0°C)
> Test ended at: Tue Jul 25 01:10:16 PM CEST 2023
> 
> 
> kernel 6.5-rc-3:
> 
> Initial CPU temperature:
> coretemp-isa-0000
> Core 0:        +46.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 4:        +46.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 8:        +46.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 12:       +46.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 16:       +44.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 20:       +44.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 24:       +45.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 25:       +45.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 26:       +45.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 27:       +45.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 28:       +45.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 29:       +45.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 30:       +45.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 31:       +45.0°C  (high = +100.0°C, crit = +100.0°C)
> Stressing CPU for 30 seconds...
> stress: info: [11146] dispatching hogs: 14 cpu, 0 io, 0 vm, 0 hdd
> stress: info: [11146] successful run completed in 30s
> CPU temperature immediately after stress test:
> coretemp-isa-0000
> Core 0:        +84.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 4:        +97.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 8:        +87.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 12:      +100.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 16:       +86.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 20:       +99.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 24:       +83.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 25:       +83.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 26:       +83.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 27:       +83.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 28:       +89.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 29:       +89.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 30:       +89.0°C  (high = +100.0°C, crit = +100.0°C)
> Core 31:       +89.0°C  (high = +100.0°C, crit = +100.0°C)
> Test ended at: Tue Jul 25 01:05:42 PM CEST 2023
> 
> I tested few times with different setup and CPU temp on 6.5-rc3 is always higher especially when stressing with fewer cores.

See Bugzilla for the full thread.

Goran: On Tuesday, I asked you to perform bisection. Any update on it?

Anyway, I'm adding this regression to regzbot:

#regzbot introduced: v6.4..v6.5-rc3 https://bugzilla.kernel.org/show_bug.cgi?id=217703
#regzbot title: significant temperature increase on XPS 17 9730

Thanks.

[1]: https://bugzilla.kernel.org/show_bug.cgi?id=217703

-- 
An old man doll... just what I always wanted! - Clara

             reply	other threads:[~2023-07-27 14:25 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-07-27 14:24 Bagas Sanjaya [this message]
2023-07-28 13:42 ` Fwd: XPS 17 9730 runs significantly warmer on Kernel 6.5-rc3 compared to Kernel 6.4.3 Thorsten Leemhuis
     [not found]   ` <CANhdOJEq-+KaMv=TX7E4ggf7rm456ibha2W_+Y5m1580ngCw_A@mail.gmail.com>
2023-07-28 19:43     ` Thorsten Leemhuis
2023-07-27 14:25 Bagas Sanjaya
2023-07-28  1:31 ` Bagas Sanjaya
2023-07-28  7:00   ` Bagas Sanjaya

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