Comparison of OpenJPA with MySQL server vs EclipseLink with Derby embedded

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 MySQL server	EclipseLink Derby embedded	OpenJPA MySQL server	EclipseLink Derby embedded	OpenJPA MySQL server	EclipseLink Derby embedded
Basic Person Test	3.9	5.5	1.6	3.7	2.7	4.6
Element Collection Test	1.6	3.0	0.68	1.7	1.1	2.4
Inheritance Test	3.6	5.3	1.4	3.5	2.5	4.4
Indexing Test	5.6	6.9	2.4	4.6	4.0	5.8
Graph (Binary Tree) Test	0.68	2.0	0.57	1.9	0.63	1.9
Multithreading Test	7.2	9.3	2.7	4.1	4.9	6.7
All Tests	3.7	5.3	1.5	3.2	2.6	4.3

The results above show that in general EclipseLink with Derby embedded is more efficient than OpenJPA with MySQL server in persisting JPA entity objects to the database.

A large performance gap has been detected when using graphs of objects with large transaction size. Comparing the normalized speed of OpenJPA with MySQL database server (0.57) to the normalized speed of EclipseLink with Derby embedded database (1.9) reveals that in that case, EclipseLink with Derby embedded is 3.3 times faster than OpenJPA with MySQL server.

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

Retrieval Size =>	Few Entities		Many Entities		Average Score
	OpenJPA MySQL server	EclipseLink Derby embedded	OpenJPA MySQL server	EclipseLink Derby embedded	OpenJPA MySQL server	EclipseLink Derby embedded
Basic Person Test	3.2	16.4	22.7	58.7	12.9	37.5
Element Collection Test	0.0038	7.5	2.9	13.3	1.4	10.4
Inheritance Test	0.017	17.1	6.9	58.9	3.4	38.0
Indexing Test	2.4	14.2	23.4	67.4	12.9	40.8
Graph (Binary Tree) Test	0.27	2.8	0.35	5.7	0.31	4.2
Multithreading Test	0.14	28.0	18.1	48.7	9.1	38.4
All Tests	1.0	14.3	12.4	42.1	6.7	28.2

The results above show that in general EclipseLink with Derby embedded is much more efficient than OpenJPA with MySQL server in retrieving JPA entity objects from the database. Comparing the normalized speed of OpenJPA with MySQL database server (6.7) to the normalized speed of EclipseLink with Derby embedded database (28.2) reveals that in these tests, EclipseLink with Derby embedded is 4.2 times faster than OpenJPA with MySQL server.

A huge performance gap has been detected when using JPA element collections with small retrieval size. Comparing the normalized speed of OpenJPA with MySQL database server (0.0038) to the normalized speed of EclipseLink with Derby embedded database (7.5) reveals that in that case, EclipseLink with Derby embedded is 1,974 times faster than OpenJPA with MySQL server.

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

Retrieval Size =>	Few Entities		Many Entities		Average Score
	OpenJPA MySQL server	EclipseLink Derby embedded	OpenJPA MySQL server	EclipseLink Derby embedded	OpenJPA MySQL server	EclipseLink Derby embedded
Basic Person Test	9.3	53.4	2.2	13.8	5.8	33.6
Element Collection Test	4.8	37.9	1.1	4.4	2.9	21.2
Inheritance Test	1.5	37.4	0.90	15.0	1.2	26.2
Indexing Test	0.31	7.6	2.1	49.3	1.2	28.4
Multithreading Test	1.9	41.2	0.99	6.1	1.4	23.6
All Tests	3.6	35.5	1.5	17.7	2.5	26.6

The results above show that in general EclipseLink with Derby embedded is much more efficient than OpenJPA with MySQL server in executing the tested JPA queries. Comparing the normalized speed of OpenJPA with MySQL database server (2.5) to the normalized speed of EclipseLink with Derby embedded database (26.6) reveals that in these tests, EclipseLink with Derby embedded is 10.6 times faster than OpenJPA with MySQL server.

A huge performance gap has been detected when using class inheritance in the object model with small retrieval size. Comparing the normalized speed of OpenJPA with MySQL database server (1.5) to the normalized speed of EclipseLink with Derby embedded database (37.4) reveals that in that case, EclipseLink with Derby embedded is 24.9 times faster than OpenJPA with MySQL server.

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

Transaction Size =>	Few Entities		Many Entities		Average Score
	OpenJPA MySQL server	EclipseLink Derby embedded	OpenJPA MySQL server	EclipseLink Derby embedded	OpenJPA MySQL server	EclipseLink Derby embedded
Basic Person Test	0.74	6.4	1.6	6.7	1.2	6.5
Element Collection Test	0.014	5.4	1.7	6.2	0.87	5.8
Inheritance Test	0.048	6.5	2.0	9.2	1.0	7.8
Indexing Test	0.74	7.3	3.0	11.1	1.9	9.2
Graph (Binary Tree) Test	0.45	2.8	0.25	1.7	0.35	2.2
Multithreading Test	0.55	21.3	2.9	5.0	1.7	13.1
All Tests	0.42	8.3	1.9	6.6	1.2	7.5

The results above show that in general EclipseLink with Derby embedded is much more efficient than OpenJPA with MySQL server in updating JPA entity objects in the database. Comparing the normalized speed of OpenJPA with MySQL database server (1.2) to the normalized speed of EclipseLink with Derby embedded database (7.5) reveals that in these tests, EclipseLink with Derby embedded is 6.2 times faster than OpenJPA with MySQL server.

A huge performance gap has been detected when using JPA element collections with small transaction size. Comparing the normalized speed of OpenJPA with MySQL database server (0.014) to the normalized speed of EclipseLink with Derby embedded database (5.4) reveals that in that case, EclipseLink with Derby embedded is 386 times faster than OpenJPA with MySQL server.

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

Transaction Size =>	Few Entities		Many Entities		Average Score
	OpenJPA MySQL server	EclipseLink Derby embedded	OpenJPA MySQL server	EclipseLink Derby embedded	OpenJPA MySQL server	EclipseLink Derby embedded
Basic Person Test	0.98	4.6	1.7	4.7	1.4	4.6
Element Collection Test	0.0099	2.5	0.65	1.4	0.33	1.9
Inheritance Test	0.033	3.9	1.5	4.5	0.75	4.2
Indexing Test	0.64	6.2	2.0	3.8	1.3	5.0
Graph (Binary Tree) Test	0.41	1.1	0.43	1.0	0.42	1.1
Multithreading Test	0.27	6.2	2.9	5.8	1.6	6.0
All Tests	0.39	4.1	1.5	3.5	0.96	3.8

The results above show that in general EclipseLink with Derby embedded is much more efficient than OpenJPA with MySQL server in deleting JPA entity objects from the database. Comparing the normalized speed of OpenJPA with MySQL database server (0.96) to the normalized speed of EclipseLink with Derby embedded database (3.8) reveals that in these tests, EclipseLink with Derby embedded is 4.0 times faster than OpenJPA with MySQL server.

A huge performance gap has been detected when using JPA element collections with small transaction size. Comparing the normalized speed of OpenJPA with MySQL database server (0.0099) to the normalized speed of EclipseLink with Derby embedded database (2.5) reveals that in that case, EclipseLink with Derby embedded is 253 times faster than OpenJPA with MySQL server.

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

Transaction/Retrieval Size	Few Entities		Many Entities		Average Score
	OpenJPA MySQL server	EclipseLink Derby embedded	OpenJPA MySQL server	EclipseLink Derby embedded	OpenJPA MySQL server	EclipseLink Derby embedded
Basic Person Test	3.6	17.3	6.0	17.5	4.8	17.4
Element Collection Test	1.3	11.3	1.4	5.4	1.3	8.3
Inheritance Test	1.0	14.0	2.5	18.2	1.8	16.1
Indexing Test	1.9	8.4	6.6	27.2	4.3	17.8
Graph (Binary Tree) Test	0.45	2.2	0.40	2.6	0.43	2.4
Multithreading Test	2.0	21.2	5.5	13.9	3.8	17.6
All Tests	1.8	12.7	3.9	14.5	2.8	13.6

The results above show that in general EclipseLink with Derby embedded is much more efficient than OpenJPA with MySQL server in performing JPA database operations. Comparing the normalized speed of OpenJPA with MySQL database server (2.8) to the normalized speed of EclipseLink with Derby embedded database (13.6) reveals that in these tests, EclipseLink with Derby embedded is 4.9 times faster than OpenJPA with MySQL server.

A huge performance gap has been detected when using class inheritance in the object model with small transaction/retrieval size. Comparing the normalized speed of OpenJPA with MySQL database server (1.0) to the normalized speed of EclipseLink with Derby embedded database (14.0) reveals that in that case, EclipseLink with Derby embedded is 14.0 times faster than OpenJPA with MySQL server.

JPA Performance Benchmark (JPAB)