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diff --git a/zarb-ml/mageia-discuss/20101105/002907.html b/zarb-ml/mageia-discuss/20101105/002907.html new file mode 100644 index 000000000..30758000d --- /dev/null +++ b/zarb-ml/mageia-discuss/20101105/002907.html @@ -0,0 +1,153 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> +<HTML> + <HEAD> + <TITLE> [Mageia-discuss] Suggestions for the ISO + </TITLE> + <LINK REL="Index" HREF="index.html" > + <LINK REL="made" HREF="mailto:mageia-discuss%40mageia.org?Subject=Re%3A%20%5BMageia-discuss%5D%20Suggestions%20for%20the%20ISO&In-Reply-To=%3C20101105110504.GK7479%40virgo.home.nanardon.zarb.org%3E"> + <META NAME="robots" CONTENT="index,nofollow"> + <META http-equiv="Content-Type" content="text/html; charset=us-ascii"> + <LINK REL="Previous" HREF="002904.html"> + <LINK REL="Next" HREF="002911.html"> + </HEAD> + <BODY BGCOLOR="#ffffff"> + <H1>[Mageia-discuss] Suggestions for the ISO</H1> + <B>Olivier Thauvin</B> + <A HREF="mailto:mageia-discuss%40mageia.org?Subject=Re%3A%20%5BMageia-discuss%5D%20Suggestions%20for%20the%20ISO&In-Reply-To=%3C20101105110504.GK7479%40virgo.home.nanardon.zarb.org%3E" + TITLE="[Mageia-discuss] Suggestions for the ISO">nanardon at nanardon.zarb.org + </A><BR> + <I>Fri Nov 5 12:05:05 CET 2010</I> + <P><UL> + <LI>Previous message: <A HREF="002904.html">[Mageia-discuss] Suggestions for the ISO +</A></li> + <LI>Next message: <A HREF="002911.html">[Mageia-discuss] Suggestions for the ISO +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#2907">[ date ]</a> + <a href="thread.html#2907">[ thread ]</a> + <a href="subject.html#2907">[ subject ]</a> + <a href="author.html#2907">[ author ]</a> + </LI> + </UL> + <HR> +<!--beginarticle--> +<PRE>* andre999 (<A HREF="https://www.mageia.org/mailman/listinfo/mageia-discuss">andr55 at laposte.net</A>) wrote: +>><i> +</I>>><i> * andre999 (<A HREF="https://www.mageia.org/mailman/listinfo/mageia-discuss">andr55 at laposte.net</A>) wrote: +</I>>><i> +</I>>>><i> Donald Stewart a écrit : +</I>>>><i> +</I>>><i> The problem of delta rpm is the work need to generated alls delta and +</I>>><i> the space need on mirrors to host everything. +</I>>><i> We must provide delta for each version to the next one: +</I>>><i> +</I>>><i> - main foo-1 +</I>>><i> - upd foo-2 D: 1->2 +</I>>><i> foo-3 D: 2->3 and 1->3 ? +</I>>><i> foo-4 D: 3->4 and 1->4, 2->4 ? +</I>>><i> +</I>><i> I would make all delta updates relative to the distro release, i.e. +</I>><i> - main = foo-1 +</I>><i> - upd_full = foo-2, foo-3, foo-4, etc +</I>><i> - upd_delta = foo-1>2, foo-1>3, foo-1>4, etc +</I>><i> without foo 2>3, 2>4, 3>4 +</I>><i> (so half as many, with 3 updates.) +</I>><i> +</I>><i> Note that the idea is to retain full update packages, the delta updates +</I>><i> being a file-by-file diff of contained files (probably in their own +</I>><i> repository). +</I> +That mean people udapting frequently their distribution will not profit +of delta rpm, then downloading the full rpm as soon they made one +update. + +Delta rpm will become not so usefull then, except for new install. + +>><i> etc... +</I>>><i> What if delta 1->4 is bigger than the package itself ? and for 2->4 ? +</I>>><i> +</I>><i> Highly improbable, as I conceive it. +</I>><i> If foo-1.rpm contains files fooa foob fooc food, and only foob changes +</I>><i> to foob', +</I>><i> then full foo-2.rpm contains files fooa foob' fooc food +</I>><i> and delta foo-2d.rpm contains only file foob', with the info that this +</I>><i> replaces foob. +</I>><i> And of course with this model, there is no 2->4. +</I> +Changes between 1->4 will probably be bigger than 2->4 as there is more +changes between them. + +>><i> Delta rpm is hard to manage (any volunteer to write the tools to manage +</I>>><i> this ?) and as bonus, I am not sure it is still compatible with our +</I>>><i> current rpm... +</I>>><i> +</I>><i> To create a delta rpm, one only needs the new full version (or the +</I>><i> proposed contents), and a script which automatically includes the new +</I>><i> files with the references to those replaced. +</I>><i> I'm not trying to say it is simple to write - especially since I +</I>><i> understand that the current tools are written in Perl - which has a +</I>><i> syntax which I barely understand. +</I>><i> But I'd be interested in contributing to my ability. +</I> +Nothing deny you to start to work on this and then submit you code. It's +what I did for the mirrors tools :) + +We'll see when BS and SVN will be ready to merge it if it works. + +>><i> Just think we don't have an infinite space on mirror. Even the sound +</I>>><i> good, please try to estimated the cost it can be per release. +</I>>><i> +</I>><i> I agree it would take more space on mirrors, but as full updates take +</I>><i> much less space than the release, +</I>><i> delta updates would take considerably less space the full updates. +</I>><i> Also, the lower bandwidth to download for users would also benefit the +</I>><i> mirrors. +</I> +You know, most of our rpms are less than 10MB, but du -sh is clear, the +distribution is around 35GB per arch. + +Nothing is really big on mirrors, but the results is. + +-- + +Olivier Thauvin +CNRS - LATMOS +♖ ♘ ♗ ♕ ♔ ♗ ♘ ♖ +-------------- next part -------------- +A non-text attachment was scrubbed... +Name: not available +Type: application/pgp-signature +Size: 197 bytes +Desc: not available +URL: </pipermail/mageia-discuss/attachments/20101105/67d7f089/attachment.asc> +</PRE> + + + + + + + + + + +<!--endarticle--> + <HR> + <P><UL> + <!--threads--> + <LI>Previous message: <A HREF="002904.html">[Mageia-discuss] Suggestions for the ISO +</A></li> + <LI>Next message: <A HREF="002911.html">[Mageia-discuss] Suggestions for the ISO +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#2907">[ date ]</a> + <a href="thread.html#2907">[ thread ]</a> + <a href="subject.html#2907">[ subject ]</a> + <a href="author.html#2907">[ author ]</a> + </LI> + </UL> + +<hr> +<a href="https://www.mageia.org/mailman/listinfo/mageia-discuss">More information about the Mageia-discuss +mailing list</a><br> +</body></html> |