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Re: What makes ancina special



Hi Riku,

thanks for the information.

Am Mittwoch, den 23.11.2011, 07:23 +0200 schrieb Riku Voipio:
> On Tue, Nov 22, 2011 at 09:54:06PM +0100, Joachim Breitner wrote:
> > looking at
> > https://buildd.debian.org/status/logs.php?pkg=pandoc&arch=armel which
> > very conveniently by now lists the builder repsonsible for each builds,
> > there is a pattern that the builds fail on ancina, but succeed on the
> > other arches. The error message are not helpful – some intermediate
> > assembly file is broken.
>  
> > Is there anything that makes ancina different from the other buildds
> > that could help us debug the problem?
> 
> Ancina is same machine as the rest, but has only 512MB of RAM while the
> other builders have 1.5GB. The other difference is that other buildds
> use lvm snapshots, while ancina still purges chroots. This could lead
> to some lefteovers (say, conffiles in /etc) that disrupt builds.

I don’t  think that leftover can affect it, but the memory consumption
can be the cause: If you look at 
https://buildd.debian.org/status/logs.php?pkg=haskell-xss-sanitize&arch=armel
you see that the others are much faster, probably due to swapping.

So it seems it is a minor bug in ghc that it gives some misleading
messages about bad assembly when it is likely that just some process
OOMed.

This might also affect xss-sanitize on mipsel, although the picture is
not as clear:
https://buildd.debian.org/status/logs.php?pkg=haskell-xss-sanitize&arch=mipsel

Greetings,
Joachim

-- 
Joachim "nomeata" Breitner
Debian Developer
  nomeata@debian.org | ICQ# 74513189 | GPG-Keyid: 4743206C
  JID: nomeata@joachim-breitner.de | http://people.debian.org/~nomeata

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