Re: Add min and max execute statement time in pg_stat_statement - Mailing list pgsql-hackers

On 02/16/2015 08:48 PM, Petr Jelinek wrote:
> On 17/02/15 01:57, Peter Geoghegan wrote:
>> On Mon, Feb 16, 2015 at 4:44 PM, Petr Jelinek <petr@2ndquadrant.com> 
>> wrote:
>>> We definitely want this feature, I wished to have this info many times.
>>
>> I would still like to see a benchmark.
>>
>>
>
> Average of 3 runs of read-only pgbench on my system all with 
> pg_stat_statement activated:
> HEAD:  20631
> SQRT:  20533
> SQRTD: 20592
>
>


So using sqrtd the cost is 0.18%. I think that's acceptable.

cheers

andrew