> centos 7 :
> Time: 3.884 ms
>
> centos 6.9
Time: 1.620 ms
>
>
> Is there anything you can advice to solve or identify the problem?
Can you run this query 10 times on each server and note the timings?
I'd like to see the reproducability of this.
Also: both machines are otherwise idle (check with top or uptime)?
Bye,
Chris.