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. 

## 28.4.3.20 The memory_global_total and x$memory_global_total Views 

These views summarize total memory use within the server. 

The memory_global_total  and x$memory_global_total  views have these columns: 

## 28.4.3.21 The metrics View 

• total_allocated 

The total bytes of memory allocated within the server. 

This view summarizes MySQL server metrics to show variable names, values, types, and whether they are enabled. By default, rows are sorted by variable type and name. 

The metrics  view includes this information: 

•Global status variables from the Performance Schema global_status  table 

• InnoDB  metrics from the INFORMATION_SCHEMA INNODB_METRICS  table 

•Current and total memory allocation, based on the Performance Schema memory instrumentation 

•The current time (human readable and Unix timestamp formats) 

There is some duplication of information between the global_status  and INNODB_METRICS  tables, which the metrics  view eliminates. 

The metrics  view has these columns: 

• Variable_name 

The metric name. The metric type determines the source from which the name is taken: 

•For global status variables: The VARIABLE_NAME  column of the global_status  table 

•For InnoDB  metrics: The NAME  column of the INNODB_METRICS  table 

•For other metrics: A view-provided descriptive string 

• Variable_value 

The metric value. The metric type determines the source from which the value is taken: 

•For global status variables: The VARIABLE_VALUE  column of the global_status  table 

