From: | Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr> |
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To: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
Cc: | Aleksander Alekseev <a(dot)alekseev(at)postgrespro(dot)ru>, Robert Haas <robertmhaas(at)gmail(dot)com>, PostgreSQL Developers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: pgbench small bug fix |
Date: | 2016-03-04 17:41:23 |
Message-ID: | alpine.DEB.2.10.1603041833370.11128@sto |
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Lists: | pgsql-hackers |
Hello Alvaro,
>>> Attached is a v3 which test integers more logically. I'm a lazy
>>> programmer who tends to minimize the number of key strokes.
>>
>> Well. From what I can tell this patch is Ready for Committer.
>
> I'm not a fan of this approach either. Would it be too complicated if
> we had a global variable that indicates which thread is the progress
> reporter? We start that with thread 0, but if the reporter thread
> finishes its transactions then it elects some other thread which hasn't
> yet finished. For this to work, each thread would have to maintain in a
> global variable whether it has finished or not.
Hmmm.
Probably it is possible, but it will sure need more that one little
condition to be achieved... I do not think that introducing a non trivial
distributed election algorithm involving locks and so would be a good
decision for this very little matter.
My advice is "keep it simple".
If this is a blocker, I can sure write such an algorithm, when I have some
spare time, but I'm not sure that the purpose is worth it.
--
Fabien.
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