Re: Reducing opr_sanity test's runtime under CLOBBER_CACHE_ALWAYS

On Sat, May 08, 2021 at 03:44:57PM -0400, Tom Lane wrote:
> I tried that, by adding a
> shim function to regress.c, and got a most gratifying result:
> on my machine opr_sanity's runtime with
> debug_invalidate_system_caches_always = 1 drops from
> 29m9s to 3m19s. Without CCA the speedup is far less impressive,
> 360ms to 305ms, but that's still useful. Especially since this
> makes the test strictly more accurate.

The speedup is quite welcome and still impressive in both cases.

> Anyway, I propose that we ought to sneak this into HEAD, since
> it's only touching test code and not anything production-critical.

+1 for pushing it in HEAD.

Looking at the patch, explicitly_binary_coercible wasn't used since
e9f42d529f990f94e1b7bdcec4a1111465c85326 (and was renamed there too). Just to
be sure, is it ok to remove it, as it was described as

> --- We don't currently use this for any tests in this file, but it is a
> --- reasonable alternative definition for some scenarios.

It would still be in the git history in needed, so I'm not objecting.