graph_json.php took 2-4 second per one graph

[fedottt]

how i can diagnose problem on screenshot
this happen after migrate from 0.8 to 1.38

[netniV]

Your best bet would be to add timing code that logs to a file the URL being used and a running time stamp between each section to narrow down which part is taking it's time.

I would suspect that one of the SQL queries is what is causing the slowness.

[fedottt]

moved cacti to a dedicated server and problem is solved now
in virtual server not enought disk speed