SELECT derivative(mean("value"), 1s) FROM "cpu_value" WHERE "host" = 'rust' AND "type" = 'cpu' AND "type_instance" = 'user' AND "instance" = '0' AND $timeFilter GROUP BY time($interval) fill(null)
SELECT derivative(mean("value"), 1s) FROM "cpu_value" WHERE "host" = 'freenas.local' AND "type" = 'cpu' AND "type_instance" = 'user' AND "instance" = '1' AND $timeFilter GROUP BY time($interval) fill(null)