On this smaller test, the indexes are over the allowed memory size (I've got
over 400.000 readings per sensor) so they are mostly written in disk. And on the
big test, I had small indexes (< page_size) because I only had about 5-10 rows
per table, thus it was 3000*8kb = 24mb which is lower than the
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 crea
