PGXC_SESSION_WLMSTAT

Updated on 2024-09-02 GMT+08:00

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PGXC_SESSION_WLMSTAT displays load management information about ongoing jobs executed on each CN in the current cluster.

**Table 1** PGXC_SESSION_WLMSTAT columns
Name	Type	Description
nodename	name	Node name.
datid	oid	OID of the database the backend is connected to.
datname	name	Name of the database the backend is connected to.
threadid	bigint	ID of the backend thread.
processid	integer	PID of a backend thread
usesysid	oid	OID of the user who logged in to the backend
appname	text	Name of the application that is connected to the backend
usename	name	Name of the user logged in to the backend
priority	bigint	Priority of Cgroup where the statement is located
attribute	text	Statement attributes Ordinary: default attribute of a statement before it is parsed by the database Simple: simple statements Complicated: complicated statements Internal: internal statement of the database
block_time	bigint	Pending duration of the statements by now (unit: s)
elapsed_time	bigint	Actual execution duration of the statements by now (unit: s)
total_cpu_time	bigint	Total CPU usage duration of the statement on the DN in the last period (unit: s)
cpu_skew_percent	integer	CPU usage inclination ratio of the statement on the DN in the last period
statement_mem	integer	Estimated memory required for statement execution. This column is reserved.
active_points	integer	Number of concurrently active points occupied by the statement in the resource pool
dop_value	integer	DOP value obtained by the statement from the resource pool
control_group	text	Cgroup currently used by the statement
status	text	Status of a statement, including: pending running: The statement is being executed. finished: The execution is finished normally. (If enqueue is set to StoredProc or Transaction, this state indicates that only some of the jobs in the statement have been executed. This state persists until the finish of this statement.) aborted: terminated unexpectedly active: normal status except for those above unknown: unknown status
enqueue	text	Current queuing status of the statements, including: Global: global queuing. Respool: resource pool queuing. CentralQueue: queuing on the CCN Transaction: being in a transaction block StoredProc: being in a stored procedure None: not in a queue Forced None: being forcibly executed (transaction block statement or stored procedure statement are) because the statement waiting time exceeds the specified value
resource_pool	name	Current resource pool where the statements are located.
query	text	Text of this backend's most recent query If state is active, this column shows the executing query. In all other states, it shows the last query that was executed.
isplana	bool	In logical cluster mode, indicates whether a statement occupies the resources of other logical clusters. The default value is f, indicating that resources of other logical clusters are not occupied.
node_group	text	Logical cluster of the user running the statement
lane	text	Fast or slow lane for statement queries. fast: fast lane slow: slow lane none: not controlled