On Sun, Jul 17, 2016 at 10:34 AM, Tom Lane <t...@sss.pgh.pa.us> wrote:

> It occurs to me that we could also remove the update_process_title GUC:
> what you would do is configure a process_title pattern that doesn't
> include the %-escape for current command tag, and the infrastructure
> could notice that that escape isn't present and skip unnecessary updates.
> The same kind of trick could be used for other potentially-expensive
> items like the lock "waiting" flag.

This seems like an interesting project for learning my way around gucs and
logging.  ​Could you elaborate a little
on the cost considerations?

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