4.2 Memory Usage

This chapter describes the Memory Usage dashboard. This dashboard lists the top I/O consumers, by thread.

Important

This report retrieves data from the x$memory_global_by_current_bytes view of the sys schema. If the sys schema, version 1.5.1 or higher, is not installed on the monitored MySQL server, the report is not populated.

Table 4.2 Memory Usage Columns

Column Name	Description
Name	Name of memory 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.
Current Count	The total number of occurrences of 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.
High Count	The high-water mark for number of memory blocks allocated for the event.