Message-ID: <42940A87.7010504@yahoo.com.au>
Date: Wed, 25 May 2005 15:17:59 +1000
From: Nick Piggin <nickpiggin@yahoo.com.au>
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To: Gene Heskett <gene.heskett@verizon.net>
CC: linux-kernel@vger.kernel.org
Subject: Re: RT patch acceptance
References: <4292DFC3.3060108@yahoo.com.au> <4293DCB1.8030904@mvista.com> <20050524192029.2ef75b89.akpm@osdl.org> <200505242326.16929.gene.heskett@verizon.net>
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Gene Heskett wrote:

>On Tuesday 24 May 2005 22:20, Andrew Morton wrote:
>
>>Sven Dietrich <sdietrich@mvista.com> wrote:
>>
>>>I think people would find their system responsiveness / tunability
>>> goes up tremendously, if you drop just a few unimportant IRQs
>>>into threads.
>>>
>>People cannot detect the difference between 1000usec and 50usec
>>latencies, so they aren't going to notice any changes in
>>responsiveness at all.
>>
>
>Excuse me?
>

You are excused ;)

> 1 second (1000 usecs, 200 times your 50 usec example) is 
>

1000usecs is 1msec.

>VERY noticeable when you are listening to music, or worse yet, trying 
>to edit it.  For much of that, submillisecond accuracy makes or 
>breaks the application.
>
>

For listening to music, 1msec is absolutely no problem. For editing,
perhaps it is getting problematic. But Andrew (and parent) were
not talking about realtime applications, but *interactivity*.

>Lets get out of the server only camp here folks, linux is used for a 
>hell of a lot more than a home for apache.
>
Let's all try to keep calm and think carefully about what someone has said
and in what context before responding.

This is a topic that for some reason will tend to degenerate into a random
shouting match where nobody actually says anything or listens to anything,
and nothing gets done. Not to say you are trying to start a flamewar, Gene,
but everyone just needs to tread a bit carefully :)

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