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在RedHat 8.3中，当dnf install/remove/upgrade命令执行时，它在Uploading Tracer Profile. 有时需要5分钟以上，这很痛苦，服务器资源也没有问题，因为它是高端服务器。
dnf install/remove/upgrade
Uploading Tracer Profile
另请注意，dnf 从foreman.
foreman