With Solaris Containers, what kind of overhead can be expected per CPU (or per core)?
Jeff Victor: For small numbers of Containers, the overhead is hardly measurable certainly less than 1 percent. A very large configuration with hundreds of Zones sees as much as a 4 percent overhead, which is still very low by comparative standards. IC: Is it true that if several Zones share the same application, then only one instance of the application needs to be installed? Is there enough isolation so that an error in one instance of the application won’t affect the same application in another Zone? Joost Pronk van Hoogeveen: As for your first question, it is possible for Zones to share the same application instance, but the decision to do so depends on if the administrator is installing the application in a directory that each Zone can see (for example, /usr in Apache). Otherwise each Solaris Zone will require a private copy of the application. With regards to your second question, every application in every Zone has its own instance (and processes) that are totally isolated from o
