I started playing with bitcoind 0.18.1 on a RPI4 and i can see that even when fully synced it is still using 100% cpu so one full core.

Is this normal / expected ?

Looking at the threads is the bitcoin-msghand (ler?) thread that is doing the work

 5946 999       20   0  557016 410080   3392 R  98.8  10.2 226:58.92 bitcoin-msghand       

could it be that my dbcache=100 is causing it to do much IO while relaying data to other peers ? To be fair i don't see much IO at all

thanks!