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+ <H1>[Mageia-dev] Will this work for a build system?</H1>
+ <B>joris dedieu</B>
+ <A HREF="mailto:mageia-dev%40mageia.org?Subject=Re%3A%20%5BMageia-dev%5D%20Will%20this%20work%20for%20a%20build%20system%3F&In-Reply-To=%3CAANLkTimCi7LsYNcxTw4bfM7mjM8yD7z8QWrCX5BMV4S8%40mail.gmail.com%3E"
+ TITLE="[Mageia-dev] Will this work for a build system?">joris.dedieu at gmail.com
+ </A><BR>
+ <I>Sun Sep 26 17:04:05 CEST 2010</I>
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+<PRE>2010/9/26 Olivier Blin &lt;<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">mageia at blino.org</A>&gt;:
+&gt;<i> R James &lt;<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">upsnag2 at gmail.com</A>&gt; writes:
+</I>&gt;<i>
+</I>&gt;&gt;&gt;<i> BTW, I once calculated (test plus extrapolation) how long it would take
+</I>&gt;&gt;&gt;<i> to rebuild every package in Mandriva on a low end 2 GHz Celeron server
+</I>&gt;&gt;&gt;<i> that I had available and it came to about 80 days.
+</I>&gt;<i>
+</I>&gt;<i> With a reasonably good machine, we used to be able to rebuild most of
+</I>&gt;<i> &quot;main&quot; in about one day.
+</I>&gt;<i>
+</I>&gt;&gt;<i> Perhaps I was naive in thinking that compiling the distro could be
+</I>&gt;&gt;<i> done with distcc or even a simple queuing system that distributes
+</I>&gt;&gt;<i> SRPMs to nodes in the community swarm. &#160;As each node returns its
+</I>&gt;&gt;<i> completed binary package, the queuing system could send it another
+</I>&gt;&gt;<i> SRPM to build.
+</I>&gt;&gt;<i>
+</I>&gt;&gt;<i> It would be cool if it could be done that way. &#160;Why pay for data
+</I>&gt;&gt;<i> center space, hardware, electricity and big bandwidth when you could
+</I>&gt;&gt;<i> have a community-provided &quot;cloud&quot; for free? :o)
+</I>&gt;<i>
+</I>&gt;<i> Because there are some authentication and integrity issues which are not
+</I>&gt;<i> simple to solve: we have to be sure that the binary packages really come
+</I>&gt;<i> from the unmodified SRPM (so that it does not contains malware).
+</I>
+This can be avoid by
+- building every package twice (also useful for integrity check)
+- randomize build order
+- timedout jobs
+
+It's not a trivial problem but imho distribute tools advantages
+(price, scalability, availability ...) should be seriously considered.
+Has a single build system in a single datacenter should be a single
+point of failure.
+
+Joris
+&gt;<i>
+</I>&gt;<i> --
+</I>&gt;<i> Olivier Blin - blino
+</I>&gt;<i> _______________________________________________
+</I>&gt;<i> Mageia-dev mailing list
+</I>&gt;<i> <A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">Mageia-dev at mageia.org</A>
+</I>&gt;<i> <A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">https://www.mageia.org/mailman/listinfo/mageia-dev</A>
+</I>&gt;<i>
+</I></PRE>
+
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