Need detailed info regarding sys.dm_os_buffer_descriptors

Question

I tried to search a lot on internet about the dmv,but didn't get much. I'm unable to get,Meaning of some of the columns of this dmv. Which are:

• pg_level
• allocation_unit_id
• row_count
• numa_node Please share meaning of this ,if anyone could have any idea about this.

Answer 1

A quick search for the DMV leads you to the MS Docs: sys.dm_os_buffer_descriptors

page_level int Index level of the page. Is nullable.

allocation_unit_id bigint ID of the allocation unit of the page. This value can be used to join sys.allocation_units. Is nullable.

row_count int Number of rows on the page. Is nullable.

numa_node int Nonuniform Memory Access node for the buffer. Is nullable.