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From: "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com>
Newsgroups: comp.lang.c++,comp.lang.c
Subject: Re: Threads across programming languages
Date: Fri, 3 May 2024 20:36:58 -0700
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On 5/3/2024 7:30 PM, Lawrence D'Oliveiro wrote:
> On Fri, 3 May 2024 09:00:30 +0200, Bonita Montero wrote:
> 
>> Am 03.05.2024 um 01:16 schrieb Lawrence D'Oliveiro:
>>
>>> On Thu, 2 May 2024 07:53:21 +0200, Bonita Montero wrote:
>>>
>>>> If you have a stream of individual I/Os and the processing of the I/Os
>>>> takes more time than the time between the I/Os you need threads.
>>>
>>> That makes the CPU the bottleneck. Which is not the case we’re
>>> discussing here.
>>
>> No, the processing beetween the I/O can mostly depend on other I/Os,
>> which is the standard case for server applications.
> 
> In that situation, multithreading isn’t going to speed things up.

ummm, so what does the server do after getting an io completion...?

It has to do something. Look something up in a RCU protected database 
structure, ect, ect... Thread sync scalability usually becomes an issue 
right when your server experiences any type of decent load. Especially 
heavy load! ;^o