This is a build time comparison between linux 5.13.0-28.31 and
5.13.0-27.29
* amd64
- before: 3 hours, 22 minutes
- after: 2 hours, 19 minutes
* arm64
- before: 15 hours, 49 minutes,
- after: 15 hours, 12 minutes
* armhf
- before: 10 hours, 59 minutes
- after: 9 hours, 41 minutes
* ppc64el
- before: 1 hour, 54 minutes
- after: 1 hour, 32 minutes
* s390x
- before: 44 minutes
- after: 29 minutes
For the architecture that are suffering with longer build times and
timeouts, arm64, there's only a marginal percentual improvement (less
than 4%) in the build time meaning that there are other areas for
improvements.
The build logs don't contain timestamps so we don't have the information
about how much time it was taken to build the dbgsym packages, however
with the apparent improvement of the build time for all architectures,
even though this is a too small of a data sampling for an statistical
analysis, we can consider this change to have been beneficial and
successfully verified.
** Tags removed: verification-needed-impish
** Tags added: verification-done-impish
** Changed in: linux (Ubuntu Impish)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1957810
Title:
impish: ddebs build take too long and times out
Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Impish:
Fix Committed
Bug description:
[ Impact ]
In impish we switched from xz compression to zstd compression for debs and
ddebs. This change seems to have increased a lot the build time without giving
any evident benefit for the kernel packages. This can cause time out when doing
full builds on launchpad.
[ Fix ]
Explicitly enforce xz compression for kernel ddebs to prevent timeout issues
during the build.
[ Where problems could occur ]
If the patch has issues it can break the build while doing full builds.
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