GS_WLM_USER_RESOURCE_HISTORY

GS_WLM_USER_RESOURCE_HISTORY stores information about resources used by users. Each record in this system catalog indicates resource usage of a user at a time point, including the memory, number of CPU cores, storage space, temporary space, operator flushing space, logical I/O traffic, number of logical I/O operations, and logical I/O rate. The memory, CPU, and I/O monitoring items record only resource usage of complex jobs. For I/O monitoring items, this parameter is valid only when enable_logical_io_statistics is set to on. The function of saving user monitoring data is enabled only when enable_user_metric_persistent is set to on. Data in the system catalog GS_WLM_USER_RESOURCE_HISTORY comes from the PG_TOTAL_USER_RESOURCE_INFO view. This system catalog can be queried by users with the sysadmin permission only in Postgres.

Table 1 GS_WLM_USER_RESOURCE_HISTORY

Name	Type	Description
username	text	Username
timestamp	timestamp with time zone	Timestamp
used_memory	integer	Size of the memory being used(The total size of memory used by the user's current active session. If no business is running or the session has ended, the dynamic memory will be automatically reclaimed, resulting in a size of 0.), in MB
total_memory	integer	Available memory, in MB The value 0 indicates that the available memory is not limited and depends on the maximum memory available in the database.
used_cpu	real	Number of CPU cores in use. CPU usage data is collected only in complex jobs, and the value is the CPU usage of the related Cgroup.
total_cpu	integer	Total number of CPU cores of the Cgroup associated with the user on the node
used_space	bigint	Used storage space, in KB
total_space	bigint	Available storage space (unit: KB). The value –1 indicates that the space is not limited.
used_temp_space	bigint	Used temporary storage space(Reserved field, not in use yet.), in KB
total_temp_space	bigint	Available temporary storage space(Reserved field, not in use yet.), in KB. The value –1 indicates that the maximum temporary storage space is not limited.
used_spill_space	bigint	Used space of operator flushing(Reserved field, not in use yet.), in KB
total_spill_space	bigint	Available storage space for operator flushing(Reserved field, not in use yet.), in KB. The value –1 indicates that the maximum operator flushing space is not limited.
read_kbytes	bigint	Byte traffic of read operations in a monitoring period(Not supported currently, available only in distributed mode.), in KB
write_kbytes	bigint	Byte traffic of write operations in a monitoring period(Not supported currently, available only in distributed mode.), in KB
read_counts	bigint	Number of read operations in a monitoring period(Not supported currently, available only in distributed mode.)
write_counts	bigint	Number of write operations in a monitoring period(Not supported currently, available only in distributed mode.)
read_speed	real	Byte rate of read operations in a monitoring period(Not supported currently, available only in distributed mode.), in KB/s
write_speed	real	Byte rate of write operations in a monitoring period(Not supported currently, available only in distributed mode.), in KB/s