Real performance use of routerboards?

How to find out real performance use of routerboards. CPU index is not precise and despite that router has only 15% CPU use is dead(high latency, cant do bandwitch test…)..
???
Thanks

Do you mean “power use” as in power consumption from DC or PoE?

No power consumption, sorry for bad word.. I mean system pefermorance, acutal use of sytem performance ..(in comparison with max. systems performance)

You are right, CPU usage is combined and doesn’t tell you much. That is why you can look at the “/tool profile” utility.

Now I had the problem, on rb433ah running dual nstreme…normaly there was no problem in tcp speed 1 connection or 20 connections showed the same speed…
But in evening times, when there are opened tousends of connections, despite processor going on 20% and also nothing informative in tools profile I judge from that that routerboard doesnt have enough pps power to feed my dual nstreme with so many connections…
I found it out from my clients (speed on speedtests - one tcp connection was max. 4mbit/s, despite 50% of traffic free…). When I do the test on mikrotik on located on internet in evenigs there was difference in one tcp test (max. 4mbit), 20 tcp test(30mbit/s). Mornings the speed is the same 30mbit/s for 1 or 20 tcp…connections…

So boys from Mikrotik, is any way to find if the routerboard has enough power in the exact time or to look for problem somewhere…?