Comparison of OpenJPA with H2 server vs EclipseLink with H2 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	EclipseLink H2 server	OpenJPA H2 server	EclipseLink H2 server	OpenJPA H2 server	EclipseLink H2 server
Basic Person Test	3.7	5.6	2.2	2.5	2.9	4.0
Element Collection Test	2.6	4.2	1.5	1.5	2.1	2.8
Inheritance Test	4.5	6.6	2.0	2.1	3.2	4.4
Indexing Test	7.3	9.7	3.6	4.1	5.4	6.9
Graph (Binary Tree) Test	1.1	4.7	0.84	3.5	0.97	4.1
Multithreading Test	7.7	10.2	4.2	4.0	5.9	7.1
All Tests	4.5	6.8	2.4	2.9	3.4	4.9

The results above show that in general EclipseLink with H2 server is more efficient than OpenJPA with H2 server in persisting JPA entity objects to the database.

A large performance gap has been detected when using graphs of objects with small transaction size. Comparing the normalized speed of OpenJPA with H2 database server (1.1) to the normalized speed of EclipseLink with H2 database server (4.7) reveals that in that case, EclipseLink with H2 server is 4.3 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	EclipseLink H2 server	OpenJPA H2 server	EclipseLink H2 server	OpenJPA H2 server	EclipseLink H2 server
Basic Person Test	2.9	5.5	7.6	8.2	5.2	6.8
Element Collection Test	0.0022	3.2	1.9	4.2	0.93	3.7
Inheritance Test	0.013	4.7	4.0	10.1	2.0	7.4
Indexing Test	4.1	4.4	8.8	9.4	6.5	6.9
Graph (Binary Tree) Test	0.38	1.1	0.49	1.9	0.44	1.5
Multithreading Test	5.9	12.2	14.0	15.9	10.0	14.0
All Tests	2.2	5.2	6.1	8.3	4.2	6.7

The results above show that in general EclipseLink with H2 server is more efficient than OpenJPA with H2 server in retrieving JPA entity objects from the database.

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 EclipseLink with H2 database server (3.2) reveals that in that case, EclipseLink with H2 server is 1,455 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	EclipseLink H2 server	OpenJPA H2 server	EclipseLink H2 server	OpenJPA H2 server	EclipseLink H2 server
Basic Person Test	3.7	3.8	1.0	1.1	2.4	2.5
Element Collection Test	2.0	4.1	1.2	1.1	1.6	2.6
Inheritance Test	2.8	3.2	1.1	1.3	2.0	2.3
Indexing Test	3.8	3.0	7.5	8.0	5.7	5.5
Multithreading Test	0.98	1.1	1.0	1.0	1.0	1.1
All Tests	2.7	3.0	2.4	2.5	2.5	2.8

The results above show that in general EclipseLink with H2 server is slightly more efficient than OpenJPA with H2 server in executing the tested JPA queries.

A large performance gap has been detected when using JPA element collections with small retrieval size. Comparing the normalized speed of OpenJPA with H2 database server (2.0) to the normalized speed of EclipseLink with H2 database server (4.1) reveals that in that case, EclipseLink with H2 server is 2.0 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	EclipseLink H2 server	OpenJPA H2 server	EclipseLink H2 server	OpenJPA H2 server	EclipseLink H2 server
Basic Person Test	3.0	4.5	2.0	2.2	2.5	3.4
Element Collection Test	0.0078	3.8	1.9	2.4	0.94	3.1
Inheritance Test	0.034	4.4	2.8	3.0	1.4	3.7
Indexing Test	2.8	4.2	3.2	3.1	3.0	3.7
Graph (Binary Tree) Test	0.79	1.4	0.43	0.79	0.61	1.1
Multithreading Test	7.0	7.8	2.5	2.5	4.8	5.1
All Tests	2.3	4.3	2.1	2.3	2.2	3.3

The results above show that in general EclipseLink with H2 server is more efficient than OpenJPA with H2 server in updating JPA entity objects in the database.

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 EclipseLink with H2 database server (3.8) reveals that in that case, EclipseLink with H2 server is 487 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	EclipseLink H2 server	OpenJPA H2 server	EclipseLink H2 server	OpenJPA H2 server	EclipseLink H2 server
Basic Person Test	3.2	6.4	2.2	3.1	2.7	4.8
Element Collection Test	0.0060	3.0	0.88	1.3	0.44	2.2
Inheritance Test	0.030	5.6	3.1	2.8	1.6	4.2
Indexing Test	6.5	10.3	3.6	3.8	5.1	7.0
Graph (Binary Tree) Test	0.73	1.5	0.75	1.3	0.74	1.4
Multithreading Test	7.6	7.0	5.2	4.9	6.4	6.0
All Tests	3.0	5.6	2.6	2.9	2.8	4.3

The results above show that in general EclipseLink with H2 server is more efficient than OpenJPA with H2 server in deleting JPA entity objects from the database.

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 EclipseLink with H2 database server (3.0) reveals that in that case, EclipseLink with H2 server is 500 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	EclipseLink H2 server	OpenJPA H2 server	EclipseLink H2 server	OpenJPA H2 server	EclipseLink H2 server
Basic Person Test	3.3	5.2	3.0	3.4	3.1	4.3
Element Collection Test	0.93	3.6	1.5	2.1	1.2	2.9
Inheritance Test	1.5	4.9	2.6	3.9	2.0	4.4
Indexing Test	4.9	6.3	5.4	5.7	5.1	6.0
Graph (Binary Tree) Test	0.75	2.1	0.63	1.9	0.69	2.0
Multithreading Test	5.9	7.7	5.4	5.7	5.6	6.7
All Tests	2.9	5.1	3.2	3.8	3.0	4.5

The results above show that in general EclipseLink with H2 server is more efficient than OpenJPA with H2 server in performing JPA database operations.

A large performance gap has been detected when using JPA element collections with small transaction/retrieval size. Comparing the normalized speed of OpenJPA with H2 database server (0.93) to the normalized speed of EclipseLink with H2 database server (3.6) reveals that in that case, EclipseLink with H2 server is 3.9 times faster than OpenJPA with H2 server.

JPA Performance Benchmark (JPAB)