show-image-memory-stats, or by using image. Images without resident pages are omitted, unless -all is specified, or if there is a single image only.
By default, the unit is 8 KiB storage pages. By specifying the -h flag you get output in human readable units.
The Pages column shows the number of allocated pages, that can be either in memory or swapped out. The In memory column shows the number of pages that are resident in memory. The Swap slot column shows how many pages have, at some point, been swapped out. The number of swapped out pages can be derived from this info as Pages - In memory. Dirty is the number of pages that are modified in relation to the on-disk persistent (non-swap) image data.
Uaread is the number of read operations from a page that is not already cached in memory.
Additional statistics about swapping is also printed.
If the command is used in an expression, the statistics table is returned as a list of lists.