Re: Testing autovacuum wraparound (including failsafe)

On Wed, Jul 12, 2023 at 01:47:51PM +0200, Daniel Gustafsson wrote:
> > On 12 Jul 2023, at 09:52, Masahiko Sawada <sawada.mshk@gmail.com> wrote:
> > Agreed. The timeout can be set by manually setting
> > PG_TEST_TIMEOUT_DEFAULT, but I bump it to 10 min by default. And it
> > now require setting PG_TET_EXTRA to run it.
> 
> +# bump the query timeout to avoid false negatives on slow test syetems.
> typo: s/syetems/systems/
> 
> 
> +# bump the query timeout to avoid false negatives on slow test syetems.
> +$ENV{PG_TEST_TIMEOUT_DEFAULT} = 600;
> Does this actually work?  Utils.pm read the environment variable at compile
> time in the BEGIN block so this setting won't be seen?  A quick testprogram
> seems to confirm this but I might be missing something.

The correct way to get a longer timeout is "IPC::Run::timer(4 *
$PostgreSQL::Test::Utils::timeout_default);".  Even if changing env worked,
that would be removing the ability for even-slower systems to set timeouts
greater than 10min.