Peter Eisentraut <[EMAIL PROTECTED]> writes:
> 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
On Thu, Sep 30, 2004 at 07:07:27PM +1000, Neil Conway wrote:
> I think it would be cool to add support for PGO to PostgreSQL's build
> system (for 8.1). There are a lot of situations where PostgreSQL is
> compiled once, and then used for weeks or months (compilations for
> inclusion in a distro b
On Thu, 2004-09-30 at 19:49, Peter Eisentraut wrote:
> 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.
That's definitely true. At first glance, the regre
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
> resu
Profile-guided optimization is a relatively new GCC feature that
improves the quality of generated code by:
- compiling a copy of the source program with some profiling hooks
- running this copy of the program on some representative input data
- recompiling the program using the profiling data pro
