V Wed, Dec 03, 2025 at 03:36:32PM +0100, Tomas Korbar napsal(a): > Hi everyone, > I just noticed that installation of packages both on my system and in > virtual machines spawned by the TMT tool are very slow. I took a bit of > time to investigate this issue and mirror.slu.cz was picked as the download > source, then I looked at the traffic and the replies to GET requests for > each package were delayed by approximately 5 seconds. Did anyone encounter > similar issues? Should we contact someone about it? > > When i used wget to download a package manually the delay did not occur but > dnf communication suffered from the delay reliably always.
I guess they applied some web crawler countermeasure. Or somebody on the route. However, I cannot reproduce it locally. wget2 and curl on "https://mirror.slu.cz/fedora/linux/releases/43/Everything/x86_64/os/Packages/d/dontpanic-1.02-21.fc43.x86_64.rpm";, neither dnf5 ("dnf5 --repofrompath _,https://mirror.slu.cz/fedora/linux/releases/43/Everything/x86_64/os --repo _ download dontpanic"). DNF5 uses librepo which uses curl library. DNF5 does not change much in curl settings besides a user agent and CA certificates. So I would recommend reproducing it with "dnf download" command and then with curl command. Also try different source IP addresses. -- Petr
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