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 bytes. |
| memKB(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. |
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