I face higher memory usage in off peak time. Earlier I though its the result of the brute force attack. But now there' no any attack, although my RAM usage unusual (there's no much different peak and off peak times).
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Normally my blog off peak time there's less than 10 active visitors on my site (Google analytics). At that time RAM usage 45-55%. Peak time active visitors goes to 30, at that time RAM usage 50-70%.
I like to know how do I check my which component eat my memory. For an instance MySQL, site plugin etc?
Another great tools is 'htop'. Makes it a easier to get a visual of what is utilizing the most RAM, CPU, etc. Easily sort the list, easily kill an item, easily get a quick overview of how things are running.
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