The DNF utility in my Fedora 28 system had been running slow recently. For quite some i had ignored it assuming it to be a bandwidth issue at my end or at their end. Since this happened for quite some time, i had to look for some help and i did find it. Apparently there is a config “fastestmirror=true” which needs to be done in /etc/dnf/dnf.conf . Post this the system was back to its blazing fast mode 🙂 .