On Wed, 19 Sep 2012 10:32:35 +0200
Nico Kruber
openSUSE:Update uses delta RPMs so it shouldn't be that big
Note that delta rpm saves for sure only on a download traffic, nothing else. As it is now, it will reassemble rpm right after a download, which with slower machines can take some time, keeping computer busy with update longer then plain rpm. So far I understand, process is: * download delta to temp copy on a disk, * load previously saved rpm, * apply delta, * save new rpm for installation and later updates. Even if it is using RAM as much as possible disk IO is bottleneck that didn't improve much in last 10 years on consumer class computers. When we update package that was never updated we don't have a copy on disk, so we have to use plain rpm file. Deltas can kick in on next update, which may, or may not happen. In other words savings that delta rpm offers are not that big in a practice. -- Regards, Rajko. -- To unsubscribe, e-mail: opensuse-kde+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kde+owner@opensuse.org