Vesta Control Panel - Forum

Is it possible to limit any of this within vestacp as per user basis?

• Simultaneous server processes
  CPU seconds/program and Script executions
  Shared Service CPU usage
  Server Memory per process
  Inodes
  DB Queries

You can limit hdd disk (quota) and bandwidth, but there is no limits for memory and cpu (yet, may be this will be in paid version - reseller module, dunno). You can try limit users with limits.conf or scripts like cpulimit, but I think it's not good idea.