root># yum install iftop
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* epel: my.fedora.ipserverone.com
* extras: mirrors.163.com
* updates: mirrors.163.com
Resolving Dependencies
There are unfinished transactions remaining. You might consider running yum-complete-transaction, or "yum-complete-transaction --cleanup-only" and "yum history redo last", first to finish them. If those don't work you'll have to try removing/installing packages by hand (maybe package-cleanup can help).
yum install yum-utils -y
yum-complete-transaction --cleanup-only