Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   "Doug Smythies" <dsmythies@telus.net>
To:     "'Rafael J. Wysocki'" <rjw@rjwysocki.net>
Cc:     "'LKML'" <linux-kernel@vger.kernel.org>,
        "'Len Brown'" <len.brown@intel.com>,
        "'Srinivas Pandruvada'" <srinivas.pandruvada@linux.intel.com>,
        "'Peter Zijlstra'" <peterz@infradead.org>,
        "'Giovanni Gherdovich'" <ggherdovich@suse.cz>,
        "'Linux PM'" <linux-pm@vger.kernel.org>,
        "'Francisco Jerez'" <francisco.jerez.plata@intel.com>
References: <3169564.ZRsPWhXyMD@kreacher> <000801d632a9$6a586c90$3f0945b0$@net>
In-Reply-To: <000801d632a9$6a586c90$3f0945b0$@net>
Subject: RE: [RFC/RFT][PATCH] cpufreq: intel_pstate: Work in passive mode with HWP enabled
Date:   Mon, 25 May 2020 14:09:51 -0700
Message-ID: <001101d632d8$d6a01b30$83e05190$@net>
MIME-Version: 1.0
Content-Type: text/plain;
        charset="us-ascii"
Content-Transfer-Encoding: 7bit
Content-Language: en-ca
Thread-Index: AdYvk3X5bnwqpX6hRwi7ciAthJfS0ADBo0fwAA9F6bA=
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Hi all,

The INTEL_CPUFREQ_TRANSITION_DELAY_HWP = 20000
test results from this e-mail were incorrect.
The test and graphs are being re-done.

On 2020.05.25 08:30 Doug smythies wrote:

> 
> Legend - intel_pstate - powersave graph [2].
> 
> What? Why is there such a graph, unrelated to this patch?
> Well, because there is a not yet understood effect.
> 
> p_powe_stock : intel_pstate, powersave, stock kernel (5.7-rc6), hwp disabled.
> P_powe_hwp : intel_pstate, powersave, patched kernel (5.7-rc6), DELAY_HWP 5000.
> P_powe_hwp2 : intel_pstate, powersave, patched kernel (5.7-rc6), DELAY_HWP 20000.
> 
> Conclusion: ??
> 
> Note: That I merely made a stupid mistake is a real possibility.

Yes, that was it. However all DELAY_HWP 20000 tests were bad,
Not just this one.

... Doug