On Fri, Aug 1, 2025 at 3:21 AM Richard W.M. Jones <[email protected]> wrote:

> On Thu, Jul 31, 2025 at 05:31:02PM -0600, Leo Sandoval wrote:
> > This week I am experimenting long latencies when running
> >
> > `fedpkg srpm`
> >
> > (around 5 minutes, real time).
> >
> > `strace -c fedpkg srpm` is telling me that the 'wait4' syscall is the one
> > consuming most of the time (85%)
>
> You'll need to use 'strace -f ...' to follow whatever subprocess it is
> waiting for.
>

good catch. I tried it again but  got similar results, with wait4 syscall
on top.

>
> Also 'dnf update fedpkg fedora-packager python3-rpkg' to make sure
> you're at the latest version.
>

updated but got the same result.

>
> > My network connection is not the fastest but running the rhpkg srpm I
> > basically got instant results.  Also, I am not sure if these delays
> started
> > after the data center move but perhaps that may be a factor.
> >
> > Any idea how to debug this one?
>
> For me, long delays like this are always kerberos.  'fedpkg srpm'
> needs to check and/or download the sources, so it's plausible that
> kerberos is being used.  Anyway in case you want to discount kerberos
> as being the problem you can do:
>
> KRB5_TRACE=/dev/stdout fedpkg srpm
>

> (for me that prints nothing extra).
>
> the same for me, no output.

Just one relevant finding so far: I have tested on a fedora42 and fedora41
VMs running on my lap and it is working as expected! so there is something
on my host system which is causing these delays.


> Rich.
>


> --
> Richard Jones, Virtualization Group, Red Hat
> http://people.redhat.com/~rjones
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