From: | Andres Freund <andres(at)anarazel(dot)de> |
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To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
Cc: | Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr>, Josh Berkus <josh(at)agliodbs(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: pgbench stats per script & other stuff |
Date: | 2015-09-02 21:55:41 |
Message-ID: | 20150902215541.GB13579@awork2.anarazel.de |
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Lists: | pgsql-hackers |
On 2015-09-02 14:36:51 -0400, Robert Haas wrote:
> On Wed, Sep 2, 2015 at 2:20 PM, Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr> wrote:
> >> I'm wondering if percentages instead of weights would be a better
> >> idea. That'd mean you'd be forced to be more careful when adding another
> >> script (having to adjust the percentages of other scripts) but arguably
> >> that's a good thing?
> >
> > If you use only percent, then you have to check that the total is 100,
> > probably you have to use floats, to do something when the total is not 100,
> > checking would complicate the code and test people mental calculus
> > abilities. Not sure this is a good idea:-)
>
> I agree. I don't see a reason to enforce that the total of the
> weights must be 100.
I'm slightly worried that using weights will be a bit confusing because
adding another script will obviously reduce the frequency of already
defined scripts. But it's probably not worth worrying.
Andres
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