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Re: Bug#229357: Can we require build-arch/indep targets for lenny?

On 02/07/07 at 21:26 -0700, Steve Langasek wrote:
> Lucas has agreed to doing a full archive rebuild with a modified dpkg-dev,
> for comparison with the previous test.  A dpkg-dev binary including this
> change can be found at
> <http://people.debian.org/~vorlon/dpkg-dev_1.14.4-0.1_all.deb>.


Here are some results:
7299 packages from unstable/main were rebuilt (that's all packages
building non-arch:all packages).
1823 packages were built using 'debian/rules build-arch'.

Of those 1823 packages, 31 packages failed to build. Logs can be found
on http://people.debian.org/~lucas/logs/2007/07/04/ .

Regarding build time, it's difficult to compare, because the most recent
data I have was generated on a different set of cluster nodes, and the
nodes I used for this have a slower network connection. Also, the
mirror's disk is a bottleneck since I was using 55 nodes. But some
packages seem to benefit from using build-arch despite that. See
http://people.debian.org/~lucas/logs/2007/07/04/00impr_bt.txt . Previous
and current build times are the 8th and 9th columns.

There might be others, that /built/ faster, but that took a longer time
to fetch build-deps because of the network/mirror.

The full listing of the results is on
http://people.debian.org/~lucas/logs/2007/07/04/00summary.txt , with the
columns being:
1: package
2, 3, 4: previous, current version, and whether they differ
5, 6, 7: previous, current result, and whether they differ
8, 9, 10: previous, current result, and whether they differ (incl.
margin of error)
11, 12, 13: previous, current reason for build failure, and whether they

So, to conclude: this change seems like a good idea, with only about 30
packages to fix (but they should probably be fixed anyway). Not so many
packages benefit from it currently, but there was no reason until now for packages
to implement that.
| Lucas Nussbaum
| lucas@lucas-nussbaum.net   http://www.lucas-nussbaum.net/ |
| jabber: lucas@nussbaum.fr             GPG: 1024D/023B3F4F |

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