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PG_COMM_STATUS

Updated at:Jul 15, 2020 GMT+08:00

PG_COMM_STATUS displays the communication library status for a single DN.

Table 1 PG_COMM_STATUS columns

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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