For example,  when we set the number of transaction 10,000 (-t 10000),
range of aid is 100,000,
and --exponential is 10, decile percents is under following as you know.

decile percents: 63.2% 23.3% 8.6% 3.1% 1.2% 0.4% 0.2% 0.1% 0.0% 0.0%
highest/lowest percent of the range: 9.5% 0.0%

They mean that,
#number of access in range of aid (from decile percents):
 1 to 10,000             => 6,320 times
 10,001 to 20,000    => 2,330 times
 20,001 to 30,000    => 860 times
 90,001 to 10,0000  => 0 times

#number of access in range of aid (from highest/lowest percent of the
1 to 1,000                => 950 times
99,001 to 10,0000   => 0 times

that's all.

Their information is easy to understand distribution of access probability,
isn't it?
Maybe I and Fabien-san have a knowledge of mathematics, so we think decile
percentage is common sense.
But if it isn't common sense, I agree with adding about these explanation
in the documents.

What we are talking about is the "summary" at the end of the run, which is expected to be compact, hence the terse few lines.

I'm not sure how to make it explicit without extending the summary too much, so it would not be a summary anymore:-)

My initial assumption is that anyone interested enough in changing the default uniform distribution for a test would know about decile, but that seems to be optimistic.

Maybe it would be okay to keep a terse summary but to expand the documentation to explain what it means, as you suggested above...


Sent via pgsql-hackers mailing list (
To make changes to your subscription:

Reply via email to