Re: profile-guided opt. w/ GCC

Neil Conway wrote:
> The patch adds a new make target ("profile-opt") that does the PGO
> steps outlined above -- the "representative input data" is the
> regression tests running in serial mode. I haven't run any benchmarks
> yet (if someone wants to try that, I'd be very curious to see the
> results).

I doubt that the regression tests are anywhere near representative input 
data.  They run a proportion of borderline and error cases that is much 
higher than I would expect in normal use.

-- 
Peter Eisentraut
http://developer.postgresql.org/~petere/