Delta RPM support added

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Delta RPM support added

Unread post by scott »

As part of our new infrastructure update, we have added support for Delta rpm updates. Available since Fedora 11, deltas (drpms) are binary "patches" to the existing RPM packages. Instead of downloading all files, regardless of whether they have changed or not, a delta RPM will only download the files that have changed compared to the previous RPM package saving considerable bandwidth and time on updates.

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
and thats it! Delta support is available for Fedora 11 and up, and EL6.
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