Re: RT patch acceptance

[Nick Piggin]

Gene Heskett wrote:

> On Tuesday 24 May 2005 22:20, Andrew Morton wrote:
>
> > Sven Dietrich <sdietrich@xxxxxxxxxx> 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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