Greg Kroah-Hartman' <gregkh@linuxfoundation.org>, linux-pm@vger.kernel.org,
 stable@vger.kernel.org, 'Daniel Lezcano' <daniel.lezcano@linaro.org>
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From: Christian Loehle <christian.loehle@arm.com>
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On 2/10/26 08:02, Sergey Senozhatsky wrote:
> On (26/02/05 07:15), Christian Loehle wrote:
> [..]
>> @Doug given this is on Chromebooks base=84.5 and revert=59.5 doesn't necessarily mean
>> 29.6% decrease in system performance in a traditional throughput sense.
>> The "benchmark" might me measuring dropped frames, user input latency or what have you.
>> Nonetheless @Sergey do feel free to expand.
> 
> I'm not on the performance team and I don't define those metrics, so
> I can't really comment.  But frame drops during Google Docs scrolling,
> for instance, or typing is a user visible regression, that people tend
> to notice.

Yeah I guess that was my point already, i.e. it isn't implausible that
e.g. a frequency reduction from 2.2GHz to 2.0GHz (-10%) might result in
double the number of dropped frames (= score reduction of 50%).
Everything just an example but don't be thrown off by the 29.6% reduction in
score and expect to go looking for -29.6% cpu frequency (like you would expect
for many purely cpubound benchmarks).


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