After I updated Magento, it starts to use more CPU than usual as you can see below. After 05-07, CPU system time increases, just at the day I updated Magento to 18.104.22.168.
In this second image you can see CPU usage closer. After clearing cache, CPU system usage drops (between 21:00 and 22:00):
Is there any explanation for this high CPU system usage after Magento update?
I guess cache is more used in this new Magento version, so that it uses more system to read the cache.
Is this ok? Should I care?