Performance Schema socket_summary_by_instance Table

This table summarizes socket I/O events per socket instance, allowing for traffic analysis and latency monitoring of individual connections.

It aggregates timer and byte count statistics for all socket I/O operations by socket instance.

Column	Description
EVENT_NAME	Socket instrument.
OBJECT_INSTANCE_BEGIN	Address in memory.
COUNT_STAR	Number of summarized events
SUM_TIMER_WAIT	Total wait time of the summarized events that are timed.
MIN_TIMER_WAIT	Minimum wait time of the summarized events that are timed.
AVG_TIMER_WAIT	Average wait time of the summarized events that are timed.
MAX_TIMER_WAIT	Maximum wait time of the summarized events that are timed.
COUNT_READ	Number of all read operations, including RECV, RECVFROM, and RECVMSG.
SUM_TIMER_READ	Total wait time of all read operations that are timed.
MIN_TIMER_READ	Minimum wait time of all read operations that are timed.
AVG_TIMER_READ	Average wait time of all read operations that are timed.
MAX_TIMER_READ	Maximum wait time of all read operations that are timed.
SUM_NUMBER_OF_BYTES_READ	Bytes read by read operations.
COUNT_WRITE	Number of all write operations, including SEND, SENDTO, and SENDMSG.
SUM_TIMER_WRITE	Total wait time of all write operations that are timed.
MIN_TIMER_WRITE	Minimum wait time of all write operations that are timed.
AVG_TIMER_WRITE	Average wait time of all write operations that are timed.
MAX_TIMER_WRITE	Maximum wait time of all write operations that are timed.
SUM_NUMBER_OF_BYTES_WRITE	Bytes written by write operations.
COUNT_MISC	Number of all miscellaneous operations not counted above, including CONNECT, LISTEN, ACCEPT, CLOSE, and SHUTDOWN.
SUM_TIMER_MISC	Total wait time of all miscellaneous operations that are timed.
MIN_TIMER_MISC	Minimum wait time of all miscellaneous operations that are timed.
AVG_TIMER_MISC	Average wait time of all miscellaneous operations that are timed.
MAX_TIMER_MISC	Maximum wait time of all miscellaneous operations that are timed.

The corresponding row in the table is deleted when a connection terminates.

You can TRUNCATE the table, which will reset all counters to zero.

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