Re: Reduce timing overhead of EXPLAIN ANALYZE using rdtsc?

On Wed, Nov 19, 2025 at 11:55 AM Lukas Fittl <lukas@fittl.com> wrote:
> Overall, I'm still thinking a GUC might be the way to go, but I don't think anyone else was enthusiastic about that
idea:) 

Reliable feature auto-detection is the best option, but if that's not
possible, I think the choices are add a GUC or give up on the project
altogether. Using a GUC to deal with platform dependencies is a pretty
reasonable concept -- see, e.g. dynamic_shared_memory_type or
huge_pages or io_method. If we can't autodetect it reliably and we
aren't willing to add a GUC, we're basically saying there's not enough
value here to justify adding a configuration parameter. That's often a
totally reasonable conclusion -- it can easily happen that the
benefits of a platform-specific optimization are too small to make it
worth configuring. But I would have thought that in this case the
benefits might be quite large.

--
Robert Haas
EDB: http://www.enterprisedb.com