Hi,
When you say the CPU jumps, how are you monitoring this? If you are using the linux command top
to monitor this it isn’t uncommon to be looking at the wrong column for this information.
If you are using top
, you want to look at the %Cpu(s)
line, the number before id
is of interest to you ,that is how much of the CPU is idle and is the number that should be of most importance.
The %CPU column in the actual process list actually shows CPU% change since last reading, so even if this says 87%, that just means it’s using 87% more CPU than it previously did (when it used close to nothing by just existing) and isn’t as important if the processes go away by them selves.
Also are you experiencing any slow load times etc as an effect of this, if so you might want to look into how the caching plugin is set up as there are many different ways to cache a site.