Message-ID: <3F2F8F0E.5060108@cyberone.com.au>
Date: Tue, 05 Aug 2003 21:03:42 +1000
From: Nick Piggin <piggin@cyberone.com.au>
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To: Con Kolivas <kernel@kolivas.org>
CC: linux kernel mailing list <linux-kernel@vger.kernel.org>,
       Andrew Morton <akpm@osdl.org>, Ingo Molnar <mingo@elte.hu>,
       Felipe Alfaro Solana <felipe_alfaro@linuxmail.org>
Subject: Re: [PATCH] O13int for interactivity
References: <200308050207.18096.kernel@kolivas.org> <200308052045.39476.kernel@kolivas.org> <3F2F8B77.4020107@cyberone.com.au> <200308052056.38861.kernel@kolivas.org>
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Con Kolivas wrote:

>On Tue, 5 Aug 2003 20:48, Nick Piggin wrote:
>
>>Con Kolivas wrote:
>>
>>>On Tue, 5 Aug 2003 20:32, Nick Piggin wrote:
>>>
>>>>What you are doing is restricting some range so it can adapt more quickly
>>>>right? So you still have the problem in the cases where you are not
>>>>restricting this range.
>>>>
>>>Avoiding it becoming interactive in the first place is the answer.
>>>Anything more rapid and X dies dead as soon as you start moving a window
>>>for example, and new apps are seen as cpu hogs during startup and will
>>>take _forever_ to start under load. It's a tricky juggling act and I keep
>>>throwing more balls at it.
>>>
>>Well, what if you give less boost for sleeping?
>>
>
>Then it takes longer to become interactive. Take 2.6.0-test2 vanilla - audio 
>apps can take up to a minute to be seen as fully interactive; whether this is 
>a problem for your hardware or not is another matter but clearly they are 
>interactive using <1% cpu time on the whole.
>

I think this is a big problem, a minute is much too long. I guess its
taking this long to build up because X needs a great deal of inertia
so that it can stay in a highly interactive state right?

If so then it seems the interactivity estimator does not have enough
information to work properly for X. In which case maybe X needs to be
reniced, or backboosted, or have _something_ done to help out.


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