PG_COMM_STATUS

PG_COMM_STATUS displays the communication library status for a single DN.

Table 1 PG_COMM_STATUS columns

Name	Type	Description
node_name	text	Node name
rxpck_rate	integer	Receiving rate of the communication library on the node, in byte/s
txpck_rate	integer	Sending rate of the communication library on the node, in byte/s
rxkbyte_rate	bigint	Receiving rate of the communication library on the node, in kbyte/s
txkbyte_rate	bigint	Sending rate of the communication library on the node, in kbyte/s
buffer	bigint	Size of the buffer of the Cmailbox
memkbyte_libcomm	bigint	Communication memory size of the libcomm process, in bytes
memkbyte_libpq	bigint	Communication memory size of the libpq process, in bytes
used_pm	integer	Real-time usage of the postmaster thread
used_sflow	integer	Real-time usage of the gs_sender_flow_controller thread
used_rflow	integer	Real-time usage of the gs_receiver_flow_controller thread
used_rloop	integer	Highest real-time usage among multiple gs_receivers_loop threads
stream	integer	Total number of used logical connections.