tpch1s=# CREATE RESOURCE GROUP rgroup1 WITH (CPU_RATE_LIMIT=5, MEMORY_LIMIT=25, MEMORY_SPILL_RATIO=20);
tpch1s=# ALTER RESOURCE GROUP admin_group SET CPU_RATE_LIMIT 10;
tpch1s=# ALTER RESOURCE GROUP default_group SET CPU_RATE_LIMIT 10;

tpch1s=#  SELECT * FROM gp_toolkit.gp_resgroup_config;
 groupid |   groupname   | concurrency | cpu_rate_limit | memory_limit | memory_shared_quota | memory_spill_ratio | memory_auditor | cpuset 
---------+---------------+-------------+----------------+--------------+---------------------+--------------------+----------------+--------
    6437 | default_group | 20          | 10             | 0            | 80                  | 0                  | vmtracker      | -1
    6438 | admin_group   | 10          | 10             | 10           | 80                  | 0                  | vmtracker      | -1
   16385 | rgroup1       | 10          | 5              | 25           | 80                  | 20                 | vmtracker      | -1
(3 rows)