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From: David Brown <david.brown@hesbynett.no>
Newsgroups: comp.lang.c
Subject: Re: xxd -i vs DIY Was: C23 thoughts and opinions
Date: Fri, 31 May 2024 09:55:49 +0200
Organization: A noiseless patient Spider
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(Your Usenet client is really messing up linebreaks.  I don't know what 
you are using, but I haven't seen such problems since google groups 
postings.)

On 30/05/2024 20:20, Paul wrote:
> On 5/30/2024 9:05 AM, David Brown wrote:
>> On 29/05/2024 23:08, bart wrote:
>>> On 28/05/2024 16:34, David Brown wrote:
>>>> On 28/05/2024 13:41, Michael S wrote:
>>>
>> So what I see from this is that my new Linux PC took 14 seconds
>> while my old Linux PC took 25 seconds - it makes sense that the new
>> processor is something like to 80% faster than the old one for a
>> single-threaded calculation.  And Windows (noting that this is
>> Windows 7, not a recent version of Windows) doubles that time for
>> some reason.
>> 

> 
> Did you turn off Windows Defender while benching ?
> 
>     [Picture]
> 
>      https://i.postimg.cc/QCgLJLHQ/windows11-AV-off-control.gif
> 

I don't have that kind of stuff turned on - so no need to turn it off. 
The trick to keeping Windows malware-free is not to run malware on it.

> Benching on Windows is an art, because of all the crap going
> on under the hood.

Yes, it can be.  But I've done it before :-)  And there's less of that 
in Windows 7 than Windows 11.  (And for balance, there are plenty of 
background processes on typical Linux desktops too.)

None of my testing here was accurate benchmarking, it was just ballpark 
figures.  There was lots of other stuff running on all the machines, but 
with very low average cpu usage on a 4-core cpu, it doesn't make a big 
difference.

> 
> I've had programs slowed to 1/8th normal speed to 1/20th normal
> speed, by forgetting to turn off a series of things. Once all
> that is done, now you're getting into the same ballpark as Linux.

Does that mean you are happy running normal programs at these speeds? 
If you have all this background stuff running when you are not 
benchmarking, but simply working on the computer, then surely it has a 
similar effect for your compiler, IDE, browser, and whatever else you 
are doing?  I know some people run multiple anti-virus and other 
"security" programs that slow down some tasks on Windows, but not /that/ 
much.

> 
> I also have to turn off the crap salad in Windows, when Windows Update
> is running!!! 

Why would Windows Update be running?  In particular, why would it be 
running when you are using the machine for other purposes?

> The OS is too stupid to optimize conditions for its
> own activity. My laptop for example, ran out of RAM, because "SearchApp"
> was eating a three-course meal while I was working. Attempting to kill
> that mother, caused the incoming Update to install at closer to normal
> speed.
> 
> It takes practice to get good at benching modern Windows. On
> an OS like Windows 2000, it was always ready to bench. It came
> with no AV. It had no secret agenda. It just worked. Each succeeding
> version is more of a nightmare.
> 
> Imagine when the local AI is running on the machine, and the power
> consumption is 200W while it "listens to your voice". At least they're
> staying true to their design principles.
> 

Imagine turning off (or never enabling) the services that you don't find 
useful and can be a significant drain.  I always disable Windows 
updates, indexing services, and would never have a "voice AI" on a 
computer.  Linux does not have anything like as much of this kind of 
nonsense on normal desktops (though I believe Ubuntu had some nasty 
automatic search systems for a while).  The only one I can think of is 
"updatedb" for the "locate" command.  While "locate" can sometimes be 
useful, trawling the filesystem can be very time-consuming if it is 
large.  But it's easy to tune updatedb to cover only the bits you need.