Hi,

Quoting Richard Lewis (2024-11-22 23:14:48)
> On Thu, 21 Nov 2024 at 23:03, Richard Lewis
> <richard.lewis.deb...@googlemail.com> wrote:
> >
> > On Mon, 18 Nov 2024 at 22:30, Richard Lewis
> > <richard.lewis.deb...@googlemail.com> wrote:
> > > On Mon, 18 Nov 2024, 13:10 Johannes Schauer Marin Rodrigues, 
> > > <jo...@debian.org> wrote:
> 
> > >> Maybe run sbuild --verbose under
> > >> annotate-output?
> 
> It shows time is lost throughout,
> 
> Unpacking tarball added: +6s
> Installing fakeroot: +3s (i should just add this to the tarball)
> (to start of "Build" line = +10s total)
> to end of "check disk space": another +1s
> (To start of dpkg-buildpackage = +12s total)
> running dpkg-buildpackage = +11s total (so i suppose there is some
> rounding. the build lines were the same)
> by the time the .changes is printed: +14s total (even though schroot
> had more packages in the Built-Using header as it had gcc-13 and
> gcc-14 installed)
> By the time the "Post Build" is printed, +15s difference
> 
> 
> I suppose i will try and make a larger tmpfs to use.

could it be that your schroot is faster because the overlayfs you mount in your
directory-based schroot comes from a tmpfs and not from your disk?

Otherwise I really don't understand where these differences could be coming
from...

Thank you for trying to find this out.

cheers, josch

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