Comparison of EclipseLink with H2 embedded vs Hibernate with PostgreSQL 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
	EclipseLink H2 embedded	Hibernate PostgreSQL server	EclipseLink H2 embedded	Hibernate PostgreSQL server	EclipseLink H2 embedded	Hibernate PostgreSQL server
Basic Person Test	25.1	7.1	8.9	3.4	17.0	5.2
Element Collection Test	20.4	2.9	8.0	1.7	14.2	2.3
Inheritance Test	28.7	7.0	8.7	3.6	18.7	5.3
Indexing Test	37.6	9.3	14.0	6.1	25.8	7.7
Graph (Binary Tree) Test	17.7	3.0	14.7	2.9	16.2	2.9
Multithreading Test	30.3	31.7	11.4	13.9	20.8	22.8
All Tests	26.6	10.2	10.9	5.3	18.8	7.7

The results above show that in general EclipseLink with H2 embedded is more efficient than Hibernate with PostgreSQL server in persisting JPA entity objects to the database. Comparing the normalized speed of Hibernate with PostgreSQL database server (7.7) to the normalized speed of EclipseLink with H2 embedded database (18.8) reveals that in these tests, EclipseLink with H2 embedded is 2.4 times faster than Hibernate with PostgreSQL server.

A large performance gap has been detected when using JPA element collections with small transaction size. Comparing the normalized speed of Hibernate with PostgreSQL database server (2.9) to the normalized speed of EclipseLink with H2 embedded database (20.4) reveals that in that case, EclipseLink with H2 embedded is 7.0 times faster than Hibernate with PostgreSQL server.

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

Retrieval Size =>	Few Entities		Many Entities		Average Score
	EclipseLink H2 embedded	Hibernate PostgreSQL server	EclipseLink H2 embedded	Hibernate PostgreSQL server	EclipseLink H2 embedded	Hibernate PostgreSQL server
Basic Person Test	30.4	5.5	29.1	11.5	29.7	8.5
Element Collection Test	19.6	0.025	27.6	0.017	23.6	0.021
Inheritance Test	33.8	5.2	39.8	14.0	36.8	9.6
Indexing Test	22.2	4.6	41.3	13.3	31.8	8.9
Graph (Binary Tree) Test	16.0	0.61	20.0	0.78	18.0	0.70
Multithreading Test	33.7	11.3	29.0	17.0	31.4	14.2
All Tests	25.9	4.5	31.1	9.4	28.5	7.0

The results above show that in general EclipseLink with H2 embedded is much more efficient than Hibernate with PostgreSQL server in retrieving JPA entity objects from the database. Comparing the normalized speed of Hibernate with PostgreSQL database server (7.0) to the normalized speed of EclipseLink with H2 embedded database (28.5) reveals that in these tests, EclipseLink with H2 embedded is 4.1 times faster than Hibernate with PostgreSQL server.

A huge performance gap has been detected when using JPA element collections with large retrieval size. Comparing the normalized speed of Hibernate with PostgreSQL database server (0.017) to the normalized speed of EclipseLink with H2 embedded database (27.6) reveals that in that case, EclipseLink with H2 embedded is 1,624 times faster than Hibernate with PostgreSQL server.

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

Retrieval Size =>	Few Entities		Many Entities		Average Score
	EclipseLink H2 embedded	Hibernate PostgreSQL server	EclipseLink H2 embedded	Hibernate PostgreSQL server	EclipseLink H2 embedded	Hibernate PostgreSQL server
Basic Person Test	4.4	55.5	1.4	6.1	2.9	30.8
Element Collection Test	4.1	11.0	2.4	0.016	3.2	5.5
Inheritance Test	3.4	52.3	2.0	8.7	2.7	30.5
Indexing Test	13.0	0.050	22.8	8.8	17.9	4.4
Multithreading Test	1.0	55.2	0.67	9.2	0.85	32.2
All Tests	5.2	34.8	5.9	6.6	5.5	20.7

The results above show that in general Hibernate with PostgreSQL server is much more efficient than EclipseLink with H2 embedded in executing the tested JPA queries. Comparing the normalized speed of EclipseLink with H2 embedded database (5.5) to the normalized speed of Hibernate with PostgreSQL database server (20.7) reveals that in these tests, Hibernate with PostgreSQL server is 3.8 times faster than EclipseLink with H2 embedded.

A huge performance gap has been detected when using multithreading with small retrieval size. Comparing the normalized speed of EclipseLink with H2 embedded database (1.0) to the normalized speed of Hibernate with PostgreSQL database server (55.2) reveals that in that case, Hibernate with PostgreSQL server is 55.2 times faster than EclipseLink with H2 embedded.

On the other hand, Hibernate with PostgreSQL server is slower, for instance, when using database indexes with small retrieval size. Comparing the normalized speed of Hibernate with PostgreSQL database server (0.050) to the normalized speed of EclipseLink with H2 embedded database (13.0) reveals that in that case, Hibernate with PostgreSQL server is 260 times slower than EclipseLink with H2 embedded.

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

Transaction Size =>	Few Entities		Many Entities		Average Score
	EclipseLink H2 embedded	Hibernate PostgreSQL server	EclipseLink H2 embedded	Hibernate PostgreSQL server	EclipseLink H2 embedded	Hibernate PostgreSQL server
Basic Person Test	16.6	5.3	7.6	2.7	12.1	4.0
Element Collection Test	15.3	0.067	10.5	0.026	12.9	0.046
Inheritance Test	15.7	5.4	9.8	3.8	12.7	4.6
Indexing Test	12.1	5.4	9.9	4.3	11.0	4.8
Graph (Binary Tree) Test	13.7	1.1	7.0	0.58	10.3	0.82
Multithreading Test	20.9	29.6	4.2	6.3	12.6	18.0
All Tests	15.7	7.8	8.2	2.9	12.0	5.4

The results above show that in general EclipseLink with H2 embedded is more efficient than Hibernate with PostgreSQL server in updating JPA entity objects in the database. Comparing the normalized speed of Hibernate with PostgreSQL database server (5.4) to the normalized speed of EclipseLink with H2 embedded database (12.0) reveals that in these tests, EclipseLink with H2 embedded is 2.2 times faster than Hibernate with PostgreSQL server.

A huge performance gap has been detected when using JPA element collections with large transaction size. Comparing the normalized speed of Hibernate with PostgreSQL database server (0.026) to the normalized speed of EclipseLink with H2 embedded database (10.5) reveals that in that case, EclipseLink with H2 embedded is 404 times faster than Hibernate with PostgreSQL server.

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

Transaction Size =>	Few Entities		Many Entities		Average Score
	EclipseLink H2 embedded	Hibernate PostgreSQL server	EclipseLink H2 embedded	Hibernate PostgreSQL server	EclipseLink H2 embedded	Hibernate PostgreSQL server
Basic Person Test	35.1	5.3	19.6	4.2	27.4	4.8
Element Collection Test	19.3	0.020	8.5	stopped	13.9	0.0098
Inheritance Test	36.0	5.1	14.0	4.2	25.0	4.6
Indexing Test	42.5	9.5	19.2	6.3	30.9	7.9
Graph (Binary Tree) Test	12.2	0.012	14.4	0.012	13.3	0.012
Multithreading Test	54.4	23.3	25.8	21.8	40.1	22.5
All Tests	33.3	7.2	16.9	6.1	25.1	6.6

The results above show that in general EclipseLink with H2 embedded is much more efficient than Hibernate with PostgreSQL server in deleting JPA entity objects from the database. Comparing the normalized speed of Hibernate with PostgreSQL database server (6.6) to the normalized speed of EclipseLink with H2 embedded database (25.1) reveals that in these tests, EclipseLink with H2 embedded is 3.8 times faster than Hibernate with PostgreSQL server.

A huge performance gap has been detected when using graphs of objects with large transaction size. Comparing the normalized speed of Hibernate with PostgreSQL database server (0.012) to the normalized speed of EclipseLink with H2 embedded database (14.4) reveals that in that case, EclipseLink with H2 embedded is 1,200 times faster than Hibernate with PostgreSQL server.

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

Transaction/Retrieval Size	Few Entities		Many Entities		Average Score
	EclipseLink H2 embedded	Hibernate PostgreSQL server	EclipseLink H2 embedded	Hibernate PostgreSQL server	EclipseLink H2 embedded	Hibernate PostgreSQL server
Basic Person Test	22.3	15.7	13.3	5.6	17.8	10.7
Element Collection Test	15.7	2.8	11.4	0.35	13.6	1.6
Inheritance Test	23.5	15.0	14.9	6.9	19.2	10.9
Indexing Test	25.5	5.8	21.5	7.8	23.5	6.8
Graph (Binary Tree) Test	14.9	1.2	14.0	1.1	14.5	1.1
Multithreading Test	28.1	30.2	14.2	13.6	21.1	21.9
All Tests	21.9	12.1	14.9	6.0	18.4	9.1

The results above show that in general EclipseLink with H2 embedded is more efficient than Hibernate with PostgreSQL server in performing JPA database operations. Comparing the normalized speed of Hibernate with PostgreSQL database server (9.1) to the normalized speed of EclipseLink with H2 embedded database (18.4) reveals that in these tests, EclipseLink with H2 embedded is 2.0 times faster than Hibernate with PostgreSQL server.

A huge performance gap has been detected when using JPA element collections with large transaction/retrieval size. Comparing the normalized speed of Hibernate with PostgreSQL database server (0.35) to the normalized speed of EclipseLink with H2 embedded database (11.4) reveals that in that case, EclipseLink with H2 embedded is 32.6 times faster than Hibernate with PostgreSQL server.

JPA Performance Benchmark (JPAB)