Comparison of OpenJPA with H2 server vs ObjectDB server

Each of the following tables focuses on a specific database operation, where the last table presents average results comparison.

Speed comparison of JPA database persistence operations (normalized score, higher is better)

Transaction Size =>	Few Entities		Many Entities		Average Score
	OpenJPA H2 server	ObjectDB server	OpenJPA H2 server	ObjectDB server	OpenJPA H2 server	ObjectDB server
Basic Person Test	3.7	35.2	2.2	74.1	2.9	54.7
Element Collection Test	2.6	38.2	1.5	57.8	2.1	48.0
Inheritance Test	4.5	32.7	2.0	72.8	3.2	52.7
Indexing Test	7.3	49.9	3.6	90.1	5.4	70.0
Graph (Binary Tree) Test	1.1	100	0.84	89.2	0.97	94.6
Multithreading Test	7.7	76.6	4.2	99.4	5.9	88.0
All Tests	4.5	55.4	2.4	80.6	3.4	68.0

The results above show that in general ObjectDB server is much more efficient than OpenJPA with H2 server in persisting JPA entity objects to the database. Comparing the normalized speed of OpenJPA with H2 database server (3.4) to the normalized speed of ObjectDB database server (68.0) reveals that in these tests, ObjectDB server is 20.0 times faster than OpenJPA with H2 server.

A huge performance gap has been detected when using graphs of objects with large transaction size. Comparing the normalized speed of OpenJPA with H2 database server (0.84) to the normalized speed of ObjectDB database server (89.2) reveals that in that case, ObjectDB server is 106 times faster than OpenJPA with H2 server.

Speed comparison of JPA database retrieval operations (normalized score, higher is better)

Retrieval Size =>	Few Entities		Many Entities		Average Score
	OpenJPA H2 server	ObjectDB server	OpenJPA H2 server	ObjectDB server	OpenJPA H2 server	ObjectDB server
Basic Person Test	2.9	15.7	7.6	45.4	5.2	30.5
Element Collection Test	0.0022	19.9	1.9	49.2	0.93	34.6
Inheritance Test	0.013	13.2	4.0	49.4	2.0	31.3
Indexing Test	4.1	14.0	8.8	59.5	6.5	36.8
Graph (Binary Tree) Test	0.38	19.9	0.49	24.7	0.44	22.3
Multithreading Test	5.9	19.7	14.0	60.2	10.0	40.0
All Tests	2.2	17.1	6.1	48.1	4.2	32.6

The results above show that in general ObjectDB server is much more efficient than OpenJPA with H2 server in retrieving JPA entity objects from the database. Comparing the normalized speed of OpenJPA with H2 database server (4.2) to the normalized speed of ObjectDB database server (32.6) reveals that in these tests, ObjectDB server is 7.8 times faster than OpenJPA with H2 server.

A huge performance gap has been detected when using JPA element collections with small retrieval size. Comparing the normalized speed of OpenJPA with H2 database server (0.0022) to the normalized speed of ObjectDB database server (19.9) reveals that in that case, ObjectDB server is 9,045 times faster than OpenJPA with H2 server.

Speed comparison of JPA database query operations (normalized score, higher is better)

Retrieval Size =>	Few Entities		Many Entities		Average Score
	OpenJPA H2 server	ObjectDB server	OpenJPA H2 server	ObjectDB server	OpenJPA H2 server	ObjectDB server
Basic Person Test	3.7	38.8	1.0	25.9	2.4	32.4
Element Collection Test	2.0	39.5	1.2	33.1	1.6	36.3
Inheritance Test	2.8	34.8	1.1	34.0	2.0	34.4
Indexing Test	3.8	14.5	7.5	53.3	5.7	33.9
Multithreading Test	0.98	50.8	1.0	52.1	1.0	51.5
All Tests	2.7	35.7	2.4	39.7	2.5	37.7

The results above show that in general ObjectDB server is much more efficient than OpenJPA with H2 server in executing the tested JPA queries. Comparing the normalized speed of OpenJPA with H2 database server (2.5) to the normalized speed of ObjectDB database server (37.7) reveals that in these tests, ObjectDB server is 15.1 times faster than OpenJPA with H2 server.

A huge performance gap has been detected when using multithreading with large retrieval size. Comparing the normalized speed of OpenJPA with H2 database server (1.0) to the normalized speed of ObjectDB database server (52.1) reveals that in that case, ObjectDB server is 52.1 times faster than OpenJPA with H2 server.

Speed comparison of JPA database update operations (normalized score, higher is better)

Transaction Size =>	Few Entities		Many Entities		Average Score
	OpenJPA H2 server	ObjectDB server	OpenJPA H2 server	ObjectDB server	OpenJPA H2 server	ObjectDB server
Basic Person Test	3.0	18.3	2.0	40.9	2.5	29.6
Element Collection Test	0.0078	21.1	1.9	53.7	0.94	37.4
Inheritance Test	0.034	19.9	2.8	51.9	1.4	35.9
Indexing Test	2.8	17.9	3.2	52.1	3.0	35.0
Graph (Binary Tree) Test	0.79	42.6	0.43	24.1	0.61	33.3
Multithreading Test	7.0	68.6	2.5	68.7	4.8	68.6
All Tests	2.3	31.4	2.1	48.6	2.2	40.0

The results above show that in general ObjectDB server is much more efficient than OpenJPA with H2 server in updating JPA entity objects in the database. Comparing the normalized speed of OpenJPA with H2 database server (2.2) to the normalized speed of ObjectDB database server (40.0) reveals that in these tests, ObjectDB server is 18.2 times faster than OpenJPA with H2 server.

A huge performance gap has been detected when using JPA element collections with small transaction size. Comparing the normalized speed of OpenJPA with H2 database server (0.0078) to the normalized speed of ObjectDB database server (21.1) reveals that in that case, ObjectDB server is 2,705 times faster than OpenJPA with H2 server.

Speed comparison of JPA database removal operations (normalized score, higher is better)

Transaction Size =>	Few Entities		Many Entities		Average Score
	OpenJPA H2 server	ObjectDB server	OpenJPA H2 server	ObjectDB server	OpenJPA H2 server	ObjectDB server
Basic Person Test	3.2	20.2	2.2	67.7	2.7	44.0
Element Collection Test	0.0060	22.9	0.88	57.6	0.44	40.2
Inheritance Test	0.030	23.1	3.1	61.6	1.6	42.3
Indexing Test	6.5	34.9	3.6	55.9	5.1	45.4
Graph (Binary Tree) Test	0.73	19.3	0.75	27.9	0.74	23.6
Multithreading Test	7.6	38.5	5.2	50.5	6.4	44.5
All Tests	3.0	26.5	2.6	53.5	2.8	40.0

The results above show that in general ObjectDB server is much more efficient than OpenJPA with H2 server in deleting JPA entity objects from the database. Comparing the normalized speed of OpenJPA with H2 database server (2.8) to the normalized speed of ObjectDB database server (40.0) reveals that in these tests, ObjectDB server is 14.3 times faster than OpenJPA with H2 server.

A huge performance gap has been detected when using JPA element collections with small transaction size. Comparing the normalized speed of OpenJPA with H2 database server (0.0060) to the normalized speed of ObjectDB database server (22.9) reveals that in that case, ObjectDB server is 3,817 times faster than OpenJPA with H2 server.

Comparison of JPA/Database speed - the averages (normalized score, higher is better)

Transaction/Retrieval Size	Few Entities		Many Entities		Average Score
	OpenJPA H2 server	ObjectDB server	OpenJPA H2 server	ObjectDB server	OpenJPA H2 server	ObjectDB server
Basic Person Test	3.3	25.6	3.0	50.8	3.1	38.2
Element Collection Test	0.93	28.3	1.5	50.3	1.2	39.3
Inheritance Test	1.5	24.7	2.6	53.9	2.0	39.3
Indexing Test	4.9	26.2	5.4	62.2	5.1	44.2
Graph (Binary Tree) Test	0.75	45.4	0.63	41.5	0.69	43.5
Multithreading Test	5.9	50.8	5.4	66.2	5.6	58.5
All Tests	2.9	33.1	3.2	54.6	3.0	43.9

The results above show that in general ObjectDB server is much more efficient than OpenJPA with H2 server in performing JPA database operations. Comparing the normalized speed of OpenJPA with H2 database server (3.0) to the normalized speed of ObjectDB database server (43.9) reveals that in these tests, ObjectDB server is 14.6 times faster than OpenJPA with H2 server.

A huge performance gap has been detected when using graphs of objects with large transaction/retrieval size. Comparing the normalized speed of OpenJPA with H2 database server (0.63) to the normalized speed of ObjectDB database server (41.5) reveals that in that case, ObjectDB server is 65.9 times faster than OpenJPA with H2 server.

JPA Performance Benchmark (JPAB)