On Thu, Jul 31, 2025 at 6:03 PM Carlos Rodriguez-Fernandez <carlosrodrifernandez@xxxxxxxxx> wrote:
It went generally quick for me.
If it is networking, you may see some large amount of retrans (segment
retrans, syn retrans, etc...) with `sar -n ETCP 1` while you are running
sar cmd shows mostly 0's on retrseg/s column, so I believe we can discard this problem
the command. It could also be even before the TCP transmission, during
the name resolution (generally UDP), see what `bpf-gethostlatency` tells
you.
- $ sudo bpf-gethostlatency
- TIME PID COMM LATms HOST
- 09:12:33 704819 ConfigRefreshRu 2.070 eap.redhat.com
- 09:12:36 1994894 fedpkg 173.941 koji.fedoraproject.org
I think this is reasonable. Full output at https://paste.centos.org/view/8e7908a1
Other tools like bpf-tcplife, or bpf-tcpconnlat can help to do some
latency analysis.
Thanks, I will try those
On 7/31/25 4:31 PM, 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%)
>
> 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?
>
--
_______________________________________________
devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx
Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
-- _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
