On Sat, Jul 17, 2010 at 07:46:23PM +0200, Thomas Kellerer wrote:
> Tom Lane wrote on 17.07.2010 19:35:
>> I'd dismiss those numbers as being within experimental
>> error, except it seems odd that they all differ in the same direction.
>
> And it's reproducable (at least on my computer). As I said I ran it 20
> times (each run did it for 5,10,... columns) and the values I posted
> were averages of those runs.
You couldn't give us the standard deviation as well could you? If the
deviation within a test is larger than that between tests then you can't
say much, but without the numbers this can't be determined.
--
Sam http://samason.me.uk/