I’ve noticed this on my my test server as well as my production server since 3.0.
Seems like every 2 hours (12:00, 14:00, 18:00, 20:00) right on the lines of the graph there is a small CPU spike. It’s not every 2nd hour, but a lot of them and always on the even number. This image is from my test server that gets zero traffic except for me sometimes while testing and moving over the sites.
I can’t seem to find any iworx cron that are lining up with this.
I’ve noticed that these spikes happen at the same exact time as 4kbits/sec spikes on the BW graph. Is this the network latency check maybe? And what cron does that run in?