memory consumption on multiple wordpress instance
i want to know, if i install multiple wordpress instance through nginx virtual hosts, will they consume ram individually? or PHP will consume as 1 instance?
for example 4 virtual host
www.example.com - Plain HTML
blog.example.com - wordpress
support.example.com - wordpress
service.example.com - PHP based application
3 out of 4 required PHP. so the PHP consumption will be like 1 central instance or each will eat RAM separately?
also is there any way to have blog.example.com and support.example.com on single wordpress install?