> AFAIK you need to run app with LD_LIBRARY_PATH=/usr/lib/debug,
> otherwise the debug packages won't be used.
I had stupidly put the LD_LIBRARY_PATH on make rather than on postgres,
ahem.
OK, it works, thanks.
I'm very carefully benchmarking everything everytime I make a
modification : sometimes just a simple change creates an unexpected
performance loss.
So the process is slow, but performance patch should not make it slower ;)