Question: what requirements are for wordpress site? CPU, RAM, network speed, etc? I understand that it varies by number of users and number of plugins, etc, but perhaps anyone knows anything or there is any table that roughly states this?
Context: I have touched Wordpress sites several times, have set up one site myself (btw, all these sites run on VM, not a dedicated server), but I got an idea (and also people told me this too) that these wordpress(?) sites were quite slow. Slow for users, and even slower when using admin panel. It really takes some time for pages to load, and I expect from a basic small tiny website, that it should load ultra-sonic-super-fast, if not, at least just fast.
I haven't added any crazy SEO or whatever plugins, although there are some plugins (around 10), of course.
I have couple ideas: Maybe I need more expensive hosting virtual machine plan? Or maybe storing database in ram and not in hdd would help (backups would go to hdd then)(but then, at work we use DB's stored in hdd, and if query isn't super-big, everything runs smoothly)?
Maybe there are some tools that would tell which part of system is a bottleneck?
If this is basically a wordpress issue, then are there some other systems, like joomla, etc. that would have better performance?