Re: pgbench - minor fix for meta command only scripts

On Mon, Sep 11, 2017 at 1:49 AM, Fabien COELHO <coelho@cri.ensmp.fr> wrote:

>
> Hello Jeff,
>
> Ok, the problem was a little bit more trivial than I thought.
>
> The issue is that under a low rate there may be no transaction in
> progress, however the wait procedure was relying on select's timeout. If
> nothing is active there is nothing to wait for, thus it was an active loop
> in this case...
>
> I've introduced a usleep call in place of select for this particular case.
> Hopefully this is portable.
>

Shouldn't we use pg_usleep to ensure portability?  it is defined for
front-end code.  But it returns void, so the error check will have to be
changed.

I didn't see the problem before the commit I originally indicated , so I
don't think it has to be back-patched to before v10.

Cheers,

Jeff