It must be written to the backing store before the physical page can be reused. The PTE still refers to the physical page but is marked invalid and in transition. However, the page was modified while it was in use and its current contents haven’t yet been written to disk or remote storage. Modified: The page previously belonged to a working set but was removed. The page wasn’t modified since it was last written to disk. Standby: The page previously belonged to a working set but was removed (or was prefetched/clustered directly into the standby list). (Note that this use of the term “transition” differs from the use of the word in the section on invalid PTEs an invalid transition PTE refers to a page on the standby or modified list.) The PTE is encoded so that collided page faults can be recognized and handled properly.

A page is in this state when an I/O to the page is in progress. Transition: A temporary state for a page that isn’t owned by a working set and isn’t on any paging list. RAMMap from SysInternals would be the defacto tool for providing that information.Īctive: (also called Valid) The page is part of a working set (either a process working set, a session working set, or a system working set), or it’s not in any working set (for example, nonpaged kernel page) and a valid PTE usually points to it. There are more memory classifications than are shown in task manager.

User defined memory monitor server 2012