GS_WLM_SESSION_QUERY_INFO_ALL

GS_WLM_SESSION_INFO records load management information about a completed job executed on the current primary database node. Data is dumped from the kernel to this system catalog.

Table 1 GS_WLM_SESSION_QUERY_INFO_ALL columns

Name

Type

Description

datid

oid

OID of the database that the backend is connected to

dbname

text

Name of the database that the backend is connected to

schemaname

text

Schema name

nodename

text

Name of the primary database node on which the statement is executed

username

text

Username used for connecting to the backend

application_name

text

Name of the application connected to the backend

client_addr

inet

IP address of the client connected to the backend. If this column is null, it indicates either the client is connected via a Unix socket on the server or this is an internal process, such as autovacuum.

client_hostname

text

Host name of the connected client, as reported by a reverse DNS lookup of client_addr. This column will be non-null only for IP connections and only when log_hostname is enabled.

client_port

integer

TCP port number that the client uses for communication with this backend (-1 if a Unix socket is used)

query_band

text

Job type, which is specified by the GUC parameter query_band. The default value is a null string.

block_time

bigint

Duration that the statement is blocked before being executed, including the statement parsing and optimization duration (unit: ms)

start_time

timestamp with time zone

Time when the statement starts to be executed

finish_time

timestamp with time zone

Time when the statement execution ends

duration

bigint

Execution time of the statement, in ms

estimate_total_time

bigint

Estimated execution time of the statement, in ms

status

text

Final statement execution status, which can be finished (normal) or aborted (abnormal).

abort_info

text

Exception information displayed if the final statement execution status is aborted

resource_pool

text

Resource pool used by the user

control_group

text

Cgroup used by the statement

estimate_memory

integer

Estimated memory size of the statement.

min_peak_memory

integer

Minimum memory peak of the statement across the database nodes, in MB

max_peak_memory

integer

Maximum memory peak of the statement across the database nodes, in MB

average_peak_memory

integer

Average memory usage during statement execution (unit: MB)

memory_skew_percent

integer

Memory usage skew of the statement among the database nodes

spill_info

text

Information about statement spill to the database nodes
  • None: The statement has not been spilled to disks on the database nodes.
  • All: The statement has been spilled to disks on the database nodes.
  • [a:b]: The statement has been spilled to disks on a of b database nodes.

min_spill_size

integer

Minimum spilled data among database nodes when a spill occurs, in MB (default value: 0)

max_spill_size

integer

Maximum spilled data among database nodes when a spill occurs, in MB (default value: 0)

average_spill_size

integer

Average spilled data among database nodes when a spill occurs, in MB (default value: 0)

spill_skew_percent

integer

Database node spill skew when a spill occurs

min_dn_time

bigint

Minimum execution time of the statement across the database nodes, in ms

max_dn_time

bigint

Maximum execution time of the statement across the database nodes, in ms

average_dn_time

bigint

Average execution time of the statement across the database nodes, in ms

dntime_skew_percent

integer

Execution time skew of the statement among the database nodes

min_cpu_time

bigint

Minimum CPU time of the statement across the database nodes, in ms

max_cpu_time

bigint

Maximum CPU time of the statement across the database nodes, in ms

total_cpu_time

bigint

Total CPU time of the statement across the database nodes, in ms

cpu_skew_percent

integer

CPU time skew of the statement among database nodes

min_peak_iops

integer

Minimum IOPS peak of the statement across the database nodes. It is counted by ones in a column-store table and by ten thousands in a row-store table.

max_peak_iops

integer

Maximum IOPS peak of the statement across the database nodes. It is counted by ones in a column-store table and by ten thousands in a row-store table.

average_peak_iops

integer

Average IOPS peak of the statement across the database nodes. It is counted by ones in a column-store table and by ten thousands in a row-store table.

iops_skew_percent

integer

I/O skew of the statement among the database nodes

warning

text

Warning. The following warnings are displayed:

  • Spill file size large than 256MB
  • Broadcast size large than 100MB
  • Early spill
  • Spill times is greater than 3
  • Spill on memory adaptive
  • Hash table conflict

queryid

bigint

Internal query ID used for statement execution

query

text

Statement executed

query_plan

text

Execution plan of the statement

node_group

text

Logical openGauss of the user running the statement

cpu_top1_node_name

text

Name of the node with the highest CPU usage

mem_top1_node_name

text

Name of the node with the highest memory usage

cpu_top1_value

bigint

CPU usage

mem_top1_value

bigint

Memory usage

top_mem_dn

text

Top N memory usage

top_cpu_dn

text

Top N CPU usage

n_returned_rows

bigint

Number of rows in the result set returned by the SELECT statement

n_tuples_fetched

bigint

Number of rows randomly scanned

n_tuples_returned

bigint

Number of rows sequentially scanned

n_tuples_inserted

bigint

Number of rows inserted

n_tuples_updated

bigint

Number of rows updated

n_tuples_deleted

bigint

Number of rows deleted

n_blocks_fetched

bigint

Number of cache loading times

n_blocks_hit

bigint

Cache hits

db_time

bigint

Valid DB time, which is accumulated if multiple threads are involved (unit: μs)

cpu_time

bigint

CPU time (unit: μs)

execution_time

bigint

Execution time in the executor (unit: μs)

parse_time

bigint

SQL parsing time (unit: μs)

plan_time

bigint

SQL generation plan time (unit: μs)

rewrite_time

bigint

SQL rewriting time (unit: μs)

pl_execution_time

bigint

Execution time of PL/pgSQL (unit: μs)

pl_compilation_time

bigint

Compilation time of PL/pgSQL (unit: μs)

net_send_time

bigint

Network time (unit: μs)

data_io_time

bigint

I/O time (unit: μs)

is_slow_query

bigint

Whether the query is slow

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