Hello Is there a way to build some graphs with server load by site or by client on ISPConfig's webserver? Thanks
You might try something like this: https://unix.stackexchange.com/questions/120570/how-can-i-monitor-cpu-usage-by-user/120581 The PHP of each site runs under it#s own user, so you can use that info to build graphs or statistics. But this will be the PHP usage only, e.g. the usage of the HTTP server, in general, can not be split in this way and e.g. load from MySQL can also not be split by site like this.