MySQL 8.0 Reference Manual Including MySQL NDB Cluster 8.0
These views summarize memory use, grouped by allocation type (that is, by event). By default, rows are sorted by descending amount of memory used.
The
memory_global_by_current_bytes
and
x$memory_global_by_current_bytes
views have these columns:
event_name
The memory event name.
current_count
The total number of occurrences of the event.
current_alloc
The current number of allocated bytes that have not been freed yet for the event.
current_avg_alloc
The current number of allocated bytes per memory block for the event.
high_count
The high-water mark for number of memory blocks allocated for the event.
high_alloc
The high-water mark for number of bytes allocated for the event.
high_avg_alloc
The high-water mark for average number of bytes per memory block allocated for the event.