ts_headline calls ts_lexize equivalent to break the text. Off course there is algorithm to process the tokens and generate the headline. I would be really surprised if the algorithm to generate the headline is somehow dependent on language (as it only processes the tokens). So Oleg is right when he says ts_lexize is something to be checked.
ts_lexize performs well for all dictionaries, nothing to see here. It's ts_headline that's causing the problem. But that's just IMHO.
I will try to replicate what you are trying to do but in the meantime can you run the same ts_headline under psql multiple times and paste the result.
All the results I pasted had the medium run time out of multiple calls. These were certainly not some extreme corner cases.
cheers, Wojciech Knapik -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
