On Sat, 12 Mar 2005, Kyrre Ness Sjobak wrote: > lør, 12.03.2005 kl. 15.43 skrev M A Young: > > It seems the option isn't active for FC3 and its updates (which is what I > > had tested) so I have repeated the test with a couple of RPMs from > > different rawhide mirrors using xdelta, which uses a similar algorithm to > > rsync, and found the following sizes > > > > libgcj-4.0.0-0.31.i386.rpm 13942525 > > libgcj-4.0.0-0.32.i386.rpm 13950302 > > xdelta of rpms 6911651 > > xdelta of header + cpio 3723074 > > Just wondering: Are you doing the diffs on the data the package > contains, or the compressed version of it? Both. The first figure is the xdelta of the raw rpms, without doing anything to them, the second is the xdelta of the rpm header and the uncompressed cpio archive concatenated together. Note that xdelta compresses its result, with xdelta compression turned off, the sizes are xdelta of rpms (no compression) 7025625 xdelta of header + cpio (no comp.) 8604163 Michael Young
