Fw: dpkg modification: non-interactivity
-----Original Message-----
From: Brederlow <goswin.brederlow@student.uni-tuebingen.de>
To: Torsten Landschoff <t.landschoff@gmx.net>
Cc: Wichert Akkerman <wakkerma@cs.leidenuniv.nl>; Aaron Van Couwenberghe
<vanco@sonic.net>; debian-admintool@lists.debian.org
<debian-admintool@lists.debian.org>
Date: Thursday, January 14, 1999 8:28 AM
Subject: Re: dpkg modification: non-interactivity
>Torsten Landschoff <t.landschoff@gmx.net> writes:
>
>> On Mon, Jan 04, 1999 at 05:33:57PM +0100, Wichert Akkerman wrote:
>...
>> > > One of the other major strengths that this setup will offer is the
>> > > ability to run simultaneous jobs. IE you can be running 3 postinst
scripts
>> > > at once, dramatically increasing speed.
>> >
>> > I hadn't even thought of that possibility. You have to be very carefull
to
>> > group simultanious postinst/preinsts to make sure you don't mess up the
>> > dependencies, but it is quite doable.
>>
>> I do not think that this would be positive for the standard case. Of
course
>> this would be a big win for long-running scripts as the compile cycle for
>> emacs packages.
>
>Its not realy improving speed to run multiple config scripts at
>once. The result will be large amounts of seeking on the
>harddrive. Hardly any script does great calculations without the same
>amount of input/output (well emacs list compilation might be an exception).
>
>But what should be done is that when a script falls into interactive
>mode, e.g. has to ask a question, and thus waits for the user, it is
>suspended and put into a queue of scripts waiting for user input. Then
>the next config script that is "ready to run" is started.
>Once the user comes around (after getting a coffee or watching TV :)
>he will see the first question on the screen, he answeres it and the
>script is put back into the "ready to run" queue. At the same time the
>next script in the queue for scripts waiting for user input is allowed
>to present his question to the user.
>
>The Effect would be that as much as possible is done in the background
>while waiting for the user to answere some question. Once the user
>answeres some question, he will be confronted with as many as there
>are waiting. Also the user could answere the questions as they pop up
>and thus has something to do during installation. One thus would have
>the choise of answereing questions while installing or only at the end
>(of each installation pass).
>
>May the Source be with you.
> Goswin
>
>
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