In order to configure delta rpm support on your system you only need to install the yum-presto package with:
yum install yum-presto
and when running an update you should see:
Code: Select all
Finishing rebuild of rpms, from deltarpms
<delta rebuild> | 5.7 MB 00:12
Presto reduced the update size by 80% (from 5.7 M to 1.2 M).
Package(s) data still to download: 14 M