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Date: Mon, 22 Apr 2024 10:46:34 -0400
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Subject: Re: "Much higher CPU Usage on Linux than on Windows"
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From: Andrzej Matuch <andrzej@matu.ch>
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On 2024-04-17 2:33 a.m., RonB wrote:
> On 2024-04-14, Tyrone <none@none.none> wrote:
>> On Apr 13, 2024 at 7:32:39 PM EDT, "DFS" <nospam@dfs.com> wrote:
>>
>>> I got similar results when Linux consumed 21% of the CPU just moving a
>>> Thunderbird window around, but Windows used no more than 6% doing the
>>> same thing.
>>>
>>> Linux:   https://ibb.co/CJzXdBb
>>> Windows: https://ibb.co/JBBkqWs
>>
>> Which is almost certainly due to better video card drivers on Windows. No one
>> cares about video performance on Linux, since 99% of Linux usage is as
>> DB/App/Web servers. Most of those are headless. No video card needed.
>>
>> Windows has better video performance because Windows is the front end. Linux
>> is the backend. Both for obvious reasons.
> 
> All I know is that my fans run a lot louder and my computer is hotter when I
> try Windows than when I'm running Linux.
> 
>> Not to mention all the games that run only on Windows, which demand great
>> video performance. If/when Linux ever becomes a serious gaming platform
>> (which, let's face it, has about the same probability as Windows becoming a
>> great 24/7/365 backend server), high end video card makers will start caring
>> about video performance on Linux.
> 
> Linux has to work a lot harder to run Windows games. They're native to
> Windows. So they should run better on Windows.

Apparently, they perform better in Linux if the GPU is made by AMD, 
simply because of how optimized the open-source driver is. YouTube has a 
number of tests showing this. For NVIDIA though, the performance is a 
little worse.

-- 
Andrzej Matuch
TG: @AndrzejMatuch