Re: pgbench stats per script & other stuff - Mailing list pgsql-hackers

From Robert Haas
Subject Re: pgbench stats per script & other stuff
Date
Msg-id CA+TgmoY89bY7eSpQJpKTvj2oGPQSA3MoT0nfJYZ7T=zamvHL-A@mail.gmail.com
Whole thread Raw
In response to Re: pgbench stats per script & other stuff  (Andres Freund <andres@anarazel.de>)
List pgsql-hackers
On Wed, Sep 2, 2015 at 5:55 PM, Andres Freund <andres@anarazel.de> wrote:
> On 2015-09-02 14:36:51 -0400, Robert Haas wrote:
>> On Wed, Sep 2, 2015 at 2:20 PM, Fabien COELHO <coelho@cri.ensmp.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.

That sounds like a feature to me, not a bug.  I wouldn't worry.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company



pgsql-hackers by date:

Previous
From: Robert Haas
Date:
Subject: Re: exposing pg_controldata and pg_config as functions
Next
From: Michael Paquier
Date:
Subject: Re: src/test/ssl broken on HEAD