MySQL 5.7 Reference Manual Including MySQL NDB Cluster 7.5 and NDB Cluster 7.6
These views summarize memory use, grouped by thread. By default, rows are sorted by descending amount of memory used.
The
memory_by_thread_by_current_bytes
and
x$memory_by_thread_by_current_bytes
views have these columns:
thread_id
The thread ID.
user
The thread user or thread name.
current_count_used
The current number of allocated memory blocks that have not been freed yet for the thread.
current_allocated
The current number of allocated bytes that have not been freed yet for the thread.
current_avg_alloc
The current number of allocated bytes per memory block for the thread.
current_max_alloc
The largest single current memory allocation in bytes for the thread.
total_allocated
The total memory allocation in bytes for the thread.