[ale] Linux kernel

[Jim Kinney]

I see stuff like that and summarily dismiss everything the author said and
says from then on. Once a dufus, always a dufus until better data is
provided.

On Wed, Nov 15, 2023, 7:29 PM Jon "maddog" Hall via Ale <ale at ale.org> wrote:

> The other thing that surprised me was the passage that said "Comments just
> slow down the compilation".
>
> Paaaaleese!  Even the heaviest commented source code on a compiled program
> would be a breeze for the compiler to handle.  This excuse is fake news.
>
> On Wed, Nov 15, 2023, 19:14 Ed Cashin via Ale <ale at ale.org> wrote:
>
>> It's funny that the code is pretty conventional and should be clear to
>> people who read kernel sources a lot, but *the comments* were wrong.  And
>> people in the Reddit discussion are speculating that Linux should have 30%
>> comments like NVIDIA does.
>>
>> But I'm not sure this is such a big deal---If you ignore the comments,
>> the code is just saying, "Let tasks stay on the CPU longer if there are
>> more CPUs, but only increase the time slice up to eight CPUs."  If you let
>> it keep scaling, you'd have terrible latency on massively parallel
>> machines.  If you had all your cores working hard on math, you'd try to
>> launch a process or interact with something and get a huge pause.
>>
>> The scaling appears just based on a speculation that if you have multiple
>> CPUs, there might be a free one to help mitigate the increased latency.  So
>> it seems good that they wouldn't get carried away.  Maybe someone will just
>> try it and see.
>>
>>
>> On Wed, Nov 15, 2023 at 9:12 AM Boris Borisov via Ale <ale at ale.org>
>> wrote:
>>
>>> Read somewhere today that linux kernel has been accidentally locked to 8
>>> cores.
>>>
>>> Anyone to collaborate.
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>>
>>
>> --
>>   Ed Cashin <ecashin at noserose.net>
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