linux-kernel - Re: Latency.

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Message-id: <op.wjwfjoc96426ze@millennium.getinternet.no>
Date:	Fri, 31 Aug 2012 11:34:26 +0200
From:	Uwaysi Bin Kareem <uwaysi.bin.kareem@...adoxuncreated.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: Latency.

There is a whole thread on phoronix, regarding this, where many people  
have similar sentiments.
Good to see others who understand the same. :)

http://phoronix.com/forums/showthread.php?71741-A-Low-Latency-Kernel-For-Linux-Gaming

Some people don`t seem to be noticing it. They are fewer in the thread  
though, but quite common.
Please also read my response to this:  
http://phoronix.com/forums/showthread.php?71741-A-Low-Latency-Kernel-For-Linux-Gaming&p=284229#post284229

Peace Be With You.

On Fri, 31 Aug 2012 00:50:28 +0200, Uwaysi Bin Kareem  
<uwaysi.bin.kareem@...adoxuncreated.com> wrote:

> I have done some research on latency. I have config`d a linux kernel to  
> run 0.3ms reliable latency with audiostreams, under normal  
> worksituations. (An audioapp, and maybe some small tasks in between).
>
> This also resulted in an extremely smooth gameplaying experience, like  
> an asm-programmed custom hardware arcade. (Why gamebox-developers isn`t  
> using this, is a mystery).
>
> Recently I also tried to come as close to that experience on windows,  
> and found that win32priorityseparation on 25, all processes on idle, to  
> avoid cpu2 stalling cpu1, and minimal drivers, services, and processes  
> gave a similar experience. Windows btw, also gives lower latency, if one  
> moves windows, which one can use/abuse in a script/hack.
>
> The feeling from low latency systems brings back the exhilaration of  
> custom hardware and assembly programming. It gives a different feel, and  
> I do believe it sets a high quality expectation to software and I wonder  
> if that is why the Amiga is said to have so much good software, and  
> responsible for it`s reputation.
>
> My windows-partition now runs as good as an Amiga, and I managed to make  
> it run even better, reminding me of singletasking systems like Mac OS.
>
> Games are just so much more fun with this. And the overall os is so much  
> more responsive.
>
> More optimized stuff like Wayland will ofcourse even improve things more.
>
> I do think that for "desktop" the focus should really be on low-latency  
> systems.
> If "desktop" and "server" are the two different profiles you usually  
> config for in linux, how about two different standard configs? Or are  
> these merging aswell, since I would think multi-cpu servers appreciate  
> low os-jitter aswell?
>
> Just some thoughts.
>
> Peace Be With You.
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