MySQL 8.4 Reference Manual Including MySQL NDB Cluster 8.4
These views summarize memory use, grouped by user. By default, rows are sorted by descending amount of memory used.
The
memory_by_user_by_current_bytes
and
x$memory_by_user_by_current_bytes
views have these columns:
user
The client user name. Rows for which the
USER column in the underlying
Performance Schema table is NULL are
assumed to be for background threads and are reported with
a host name of background.
current_count_used
The current number of allocated memory blocks that have not been freed yet for the user.
current_allocated
The current number of allocated bytes that have not been freed yet for the user.
current_avg_alloc
The current number of allocated bytes per memory block for the user.
current_max_alloc
The largest single current memory allocation in bytes for the user.
total_allocated
The total memory allocation in bytes for the user.