Actually, I've got another test system with only few sensors (thus few tables)
and it's working well (<10ms insert) with all the indexes.
I know it's slowing down my performance but I need them to interogate the big
tables (each one can reach millions rows with time) really fast.
> Each INDEX create a delay on INSERT. Try to measure performance w/o any
> indexes.
>
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Regards
Loïc