I have two ~1 GB files that I want to do a side by side diff of. Solutions I have tried:
diff- Works quickly but doesn't output side-by-side.
sdiff- This outputs side-by-side but it outputs the entire file - not just the changes, so they are impossible to find.
icdiff- Just too slow (it's written in Python so no surprise there).
ydiff- Not actually tried but it is also written in Python so I assume it will also be very slow.
- KDiff3 - Crashed.
- Xcode FileMerge - Too slow (gave it a few minutes of non-responsiveness).
- Beyond Compare - Max 500MB limit.
- Meld - Made a little progress but far too slow to be useful.
vimdiff- Loads the files successfully and actually displays a side-by-side diff, but the colour scheme makes it unreadable, and normal things that you'd expect from a sane program do not work, e.g. pressing up to scroll up.