content_image/787163.jpg content_image/787164.jpg
The amount of network data transferred in the current state, in bytes. 

• DATA_SPEED 

The current actual speed of data transfer, in bytes per second. This value may differ from the requested maximum data transfer rate defined by clone_max_data_bandwidth . 

• NETWORK_SPEED 

The current speed of network transfer in bytes per second. 

The clone_progress  table is read-only. DDL, including TRUNCATE TABLE , is not permitted. 

## 27.12.20 Performance Schema Summary Tables 

Summary tables provide aggregated information for terminated events over time. The tables in this group summarize event data in different ways. 

Each summary table has grouping columns that determine how to group the data to be aggregated, and summary columns that contain the aggregated values. Tables that summarize events in similar ways often have similar sets of summary columns and differ only in the grouping columns used to determine how events are aggregated. 

Summary tables can be truncated with TRUNCATE TABLE . Generally, the effect is to reset the summary columns to 0 or NULL , not to remove rows. This enables you to clear collected values and restart aggregation. That might be useful, for example, after you have made a runtime configuration change. Exceptions to this truncation behavior are noted in individual summary table sections. 

## Wait Event Summaries 

<img src='content_image/787163.jpg'>

## Stage Summaries 

<img src='content_image/787164.jpg'>

