操作步骤

• 查询所有用户的资源限额和资源实时使用情况。

  1	SELECT * FROM PG_TOTAL_USER_RESOURCE_INFO;

  得到的结果视图如下：

  1 2 3 4 5 6 7

  username | used_memory | total_memory | used_cpu | total_cpu | used_space | total_space | used_temp_space | total_temp_space | used_spill_space | total_spill_space | read_kbytes | write_kbytes | read_counts | write_counts | read_speed | write_speed -----------------------+-------------+--------------+----------+-----------+------------+-------------+-----------------+------------------+------------------+-------------------+-------------+--------------+-------------+--------------+------------+------------- perfadm | 0 | 0 | 0 | 0 | 0 | -1 | 0 | -1 | 0 | -1 | 0 | 0 | 0 | 0 | 0 | 0 usern | 0 | 17250 | 0 | 48 | 0 | -1 | 0 | -1 | 0 | -1 | 0 | 0 | 0 | 0 | 0 | 0 userg | 34 | 15525 | 23.53 | 48 | 0 | -1 | 0 | -1 | 814955731 | -1 | 6111952 | 1145864 | 763994 | 143233 | 42678 | 8001 userg1 | 34 | 13972 | 23.53 | 48 | 0 | -1 | 0 | -1 | 814972419 | -1 | 6111952 | 1145864 | 763994 | 143233 | 42710 | 8007 (4 rows)

  其中，IO资源监控字段(read_kbytes、write_kbytes、read_counts、write_counts、read_speed和write_speed)需要在GUC参数enable_user_metric_persistent开启时才有监控数据。

  所查各字段说明详见PG_TOTAL_USER_RESOURCE_INFO 。

• 查询具体某个用户的资源限额和资源实时使用情况。

  1	SELECT * FROM GS_WLM_USER_RESOURCE_INFO('username');

  查询结果如下：

  1 2 3 4

  userid | used_memory | total_memory | used_cpu | total_cpu | used_space | total_space | used_temp_space | total_temp_space | used_spill_space | total_spill_space | read_kbytes | write_kbytes | read_counts | write_counts | read_speed | write_speed --------+-------------+--------------+----------+-----------+------------+-------------+-----------------+------------------+------------------+-------------------+-------------+--------------+-------------+--------------+------------+------------- 16407 | 18 | 1655 | 6 | 19 | 13787176 | -1 | 0 | -1 | 0 | -1 | 0 | 0 | 0 | 0 | 0 | 0 (1 row)

• 查询所有用户的资源限额和资源历史使用情况。

  1	SELECT * FROM GS_WLM_USER_RESOURCE_HISTORY;

  查询结果如下：

  1 2 3 4 5

  username | timestamp | used_memory | total_memory | used_cpu | total_cpu | used_space | total_space | used_temp_space | total_temp_space | used_spill_space | total_spill_space | read_kbytes | write_kbytes | read_counts | write_counts | read_speed | write_speed -----------------------+-------------------------------+-------------+--------------+----------+-----------+------------+-------------+-----------------+------------------+------------------+-------------------+-------------+--------------+-------------+--------------+-------------+------------- usern | 2020-01-08 22:56:06.456855+08 | 0 | 17250 | 0 | 48 | 0 | -1 | 0 | -1 | 88349078 | -1 | 45680 | 34 | 5710 | 8 | 320 | 0 userg | 2020-01-08 22:56:06.458659+08 | 0 | 15525 | 33.48 | 48 | 0 | -1 | 0 | -1 | 110169581 | -1 | 17648 | 23 | 2206 | 5 | 123 | 0 userg1 | 2020-01-08 22:56:06.460252+08 | 0 | 13972 | 33.48 | 48 | 0 | -1 | 0 | -1 | 136106277 | -1 | 17648 | 23 | 2206 | 5 | 123 | 0

  对于系统表GS_WLM_USER_RESOURCE_HISTORY，仅当GUC参数enable_user_metric_persistent开启时，才会定期将视图PG_TOTAL_USER_RESOURCE_INFO中的数据保存到历史表中。

  所查各字段说明详见GS_WLM_USER_RESOURCE_HISTORY。