I have very strange problem with CPU and cannot find from where is it.
I'm using managed VPS hosting with 2GB RAM and 2 Cores, fresh wordpress installation, Mag Max theme(Themeforest) with imported 5000 post from 30 categories. News website.
When everything is normal with 200 clients at the same time the CPU load is between 0.2 and 0.6 (2 cpus).
Somethimes CPU going crazy and its jumps to 30 or 50 (2 cpus) about 5-10 minutes. This happens 3 or 4 thimes every day. I think sometimes it happens at the same time every day about 6pm.
When problem occurred all clients getting this error: [client **.**.**.**] mod_fcgid: can't apply process slot for ....., referer: ...
I'm using last versions of this plugins:
- Contact Form 7
- NextScripts: Social Networks Auto-Poster
- Popular Widget
Please help. Thank you!