Re: [HACKERS] pgbench - minor fix for meta command only scripts

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.

ISTM that this bug exists since rate was introduced, so shame on me and 
back-patching should be needed.

-- 
Fabien.
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