OT: space requirements for full text index of a repo?

Howdy! So I was giving SVN Searcher a try, and had it running its Index
on my 25,000-ish revision 25GB repository. Well, it filled up an entire
500GB partition I had dedicated to the task (after filling up smaller
partitions, I created a dedicated 500GB partition). Does this sound
normal? Is there anyone that uses either SVN Searcher or OpenGrok that
could comment on expected index sizes?

Thanks!

j

-- 
Joshua J. Kugler - Fairbanks, Alaska
Azariah Enterprises - Programming and Website Design
joshua_at_azariah.com - Jabber: pedahzur_at_gmail.com
PGP Key: http://pgp.mit.edu/  ID 0x73B13B6A