Finishing rebuild of rpms, from deltarpms

[JD]

On 04/15/2011 09:04 PM, Andre Robatino wrote:
> http://cedarandthistle.wordpress.com/2009/11/06/on-binary-delta-algorithms/
Read the article and parts of the thesis.
So, the final version of the algorithm
still remains with the University of Oxford??

I downloaded the bsdiff  srpm for fc15 and built it.

I then used it to diff
-rwxr-xr-x  1 root root 3699072 Feb  6 23:09 
/boot/vmlinuz-2.6.35.11-83.fc14.i686
vs
-rwxr-xr-x  1 root root 3702144 Mar 31 15:26 
/boot/vmlinuz-2.6.35.12-88.fc14.i686
and the resulting patch
-rw-r--r-- 1    root root 3554921 Apr 15 22:17 
vmlinux-2.6.35.11-83--2.6.35.12-88.patch

So, you can see that the patch is almost the same size as the files diffed.

Obviously, version 4.3-8 does not contain the unpublished optimizations
that Colin Percival mentions in his thesis.