Re: [Kdiff3-user] Comparing partially hardlinked trees

[Joachim E. <joa...@gm...>]

Hi Bruno,

This seems very reasonable. I'll investigate.

Cheers,
Joachim


Am Sonntag, 28. Mai 2006 10:23 schrieb Bruno:
> KDiff3 is very slow to compare two (or 3) directory trees where most of the
> files are hardlinked between the trees.
> KDiff3 should detect such hardlinks and skip content comparison in such
> cases as diff does.
>
> Sample tree setup (only the first level shown)
>
> linux.orig/                   linux.mine/
>   arch/                         arch/
>   COPYING         <hardlink>    COPYING
>   crypto/                       crypto/
>   drivers/                      driver/
>   include/                      include/
>   ipc/                          ipc/
>   kernel/                       kernel/
>   MAINTAINERS     <hardlink>    MAINTAINERS
>   mm/                           mm/
>   README          <hardlink>    README
>   scripts/                      scripts/
>   sound/                        sound/
>   block/                        block/
>   CREDITS         <hardlink>    CREDITS
>   Documentation/                Documentation/
>   fs/                           fs/
>   init/                         init/
>   Kbuild          <hardlink>    Kbuild
>   lib/                          lib/
>   Makefile                      Makefile           (different)
>   net/                          net/
>   REPORTING-BUGS  <hardlink>    REPORTING-BUGS
>   security/                     security/
>   usr/                          usr/
>
> As you can see all files which are equal are hardlinked together.
> When comparing two files kdiff3 should first check if the files are on same
> device and have same inode; if so mark files as equal WITHOUT looking at
> the content, otherwise proceed as usual.
> Without such a check it takes an eternity to compare two trees as big as
> kernel tree with only a few changes...
>
> Regards,
> Bruno
>
>
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