The resource capping daemon, or rcapd has been a key VM resource manager for solaris(5) zones and projects to limit their rss usage to an admin set cap. There was a need to reduce the complexity of its configuration in addition to provide a handle to the admin to manage out of control zones/projects that were slowing down the system due to cap enforcement. In Solaris 11.3, we introduce these changes amongst other optimizations to rcapd to improve cap enforcement effectiveness and application performance for user benefit.
To know more about these enhancements and how to use them to your advantage, click here.