PG_COMM_STATUS¶
PG_COMM_STATUS displays the communication library status for a single DN.
Name | Type | Description |
|---|---|---|
node_name | text | Specifies the node name. |
rxpck/s | integer | Receiving rate of the communication library on a node. The unit is byte/s. |
txpck/s | integer | Sending rate of the communication library on a node. The unit is byte/s. |
rxkB/s | bigint | Receiving rate of the communication library on a node. The unit is KB/s. |
txkB/s | bigint | Sending rate of the communication library on a node. The unit is KB/s. |
buffer | bigint | Size of the buffer of the Cmailbox. |
memKB(libcomm) | bigint | Communication memory size of the libcomm process, in KB. |
memKB(libpq) | bigint | Communication memory size of the libpq process, in KB. |
%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. |