Comparison of OpenJPA with Derby server vs Hibernate 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 Derby server	Hibernate Derby embedded	OpenJPA Derby server	Hibernate Derby embedded	OpenJPA Derby server	Hibernate Derby embedded
Basic Person Test	3.1	5.9	2.7	3.8	2.9	4.9
Element Collection Test	2.0	2.9	1.7	1.8	1.8	2.3
Inheritance Test	3.0	5.3	2.3	3.7	2.6	4.5
Indexing Test	4.7	7.0	4.1	4.8	4.4	5.9
Graph (Binary Tree) Test	0.71	1.9	0.64	1.7	0.67	1.8
Multithreading Test	6.0	10.5	3.8	3.7	4.9	7.1
All Tests	3.3	5.6	2.5	3.3	2.9	4.4

The results above show that in general Hibernate with Derby embedded is more efficient than OpenJPA with Derby 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 Derby database server (0.71) to the normalized speed of Hibernate with Derby embedded database (1.9) reveals that in that case, Hibernate with Derby embedded is 2.7 times faster than OpenJPA with Derby server.

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

Retrieval Size =>	Few Entities		Many Entities		Average Score
	OpenJPA Derby server	Hibernate Derby embedded	OpenJPA Derby server	Hibernate Derby embedded	OpenJPA Derby server	Hibernate Derby embedded
Basic Person Test	0.78	14.2	11.6	16.4	6.2	15.3
Element Collection Test	0.0024	4.4	1.1	4.9	0.54	4.6
Inheritance Test	0.014	10.3	5.0	18.6	2.5	14.4
Indexing Test	0.62	10.0	13.0	16.4	6.8	13.2
Graph (Binary Tree) Test	0.065	2.6	0.39	3.0	0.23	2.8
Multithreading Test	1.6	19.3	19.0	19.3	10.3	19.3
All Tests	0.51	10.1	8.4	13.1	4.4	11.6

The results above show that in general Hibernate with Derby embedded is more efficient than OpenJPA with Derby server in retrieving JPA entity objects from the database. Comparing the normalized speed of OpenJPA with Derby database server (4.4) to the normalized speed of Hibernate with Derby embedded database (11.6) reveals that in these tests, Hibernate with Derby embedded is 2.6 times faster than OpenJPA with Derby server.

A huge performance gap has been detected when using JPA element collections with small retrieval size. Comparing the normalized speed of OpenJPA with Derby database server (0.0024) to the normalized speed of Hibernate with Derby embedded database (4.4) reveals that in that case, Hibernate with Derby embedded is 1,833 times faster than OpenJPA with Derby server.

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

Retrieval Size =>	Few Entities		Many Entities		Average Score
	OpenJPA Derby server	Hibernate Derby embedded	OpenJPA Derby server	Hibernate Derby embedded	OpenJPA Derby server	Hibernate Derby embedded
Basic Person Test	29.2	49.3	5.5	6.8	17.3	28.1
Element Collection Test	2.2	37.6	1.4	2.7	1.8	20.1
Inheritance Test	2.2	24.1	1.0	7.6	1.6	15.9
Indexing Test	2.2	5.3	11.7	14.8	7.0	10.1
Multithreading Test	35.5	39.7	8.3	6.1	21.9	22.9
All Tests	14.3	31.2	5.6	7.6	9.9	19.4

The results above show that in general Hibernate with Derby embedded is more efficient than OpenJPA with Derby server in executing the tested JPA queries.

A huge performance gap has been detected when using JPA element collections with small retrieval size. Comparing the normalized speed of OpenJPA with Derby database server (2.2) to the normalized speed of Hibernate with Derby embedded database (37.6) reveals that in that case, Hibernate with Derby embedded is 17.1 times faster than OpenJPA with Derby server.

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

Transaction Size =>	Few Entities		Many Entities		Average Score
	OpenJPA Derby server	Hibernate Derby embedded	OpenJPA Derby server	Hibernate Derby embedded	OpenJPA Derby server	Hibernate Derby embedded
Basic Person Test	1.5	4.5	4.0	3.2	2.8	3.8
Element Collection Test	0.0081	3.9	1.9	3.1	0.94	3.5
Inheritance Test	0.043	4.6	3.8	4.5	1.9	4.5
Indexing Test	1.8	4.6	6.8	5.5	4.3	5.1
Graph (Binary Tree) Test	0.16	2.7	0.27	1.2	0.22	2.0
Multithreading Test	6.9	11.6	5.0	2.6	5.9	7.1
All Tests	1.7	5.3	3.6	3.3	2.7	4.3

The results above show that in general Hibernate with Derby embedded is more efficient than OpenJPA with Derby 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 Derby database server (0.0081) to the normalized speed of Hibernate with Derby embedded database (3.9) reveals that in that case, Hibernate with Derby embedded is 481 times faster than OpenJPA with Derby server.

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

Transaction Size =>	Few Entities		Many Entities		Average Score
	OpenJPA Derby server	Hibernate Derby embedded	OpenJPA Derby server	Hibernate Derby embedded	OpenJPA Derby server	Hibernate Derby embedded
Basic Person Test	1.4	3.8	3.7	4.2	2.5	4.0
Element Collection Test	0.0082	2.3	1.4	1.5	0.71	1.9
Inheritance Test	0.035	4.0	2.5	4.3	1.3	4.2
Indexing Test	2.3	5.5	3.5	3.6	2.9	4.6
Graph (Binary Tree) Test	0.13	0.74	0.35	0.96	0.24	0.85
Multithreading Test	3.6	5.6	4.0	4.9	3.8	5.3
All Tests	1.3	3.7	2.6	3.3	1.9	3.5

The results above show that in general Hibernate with Derby embedded is more efficient than OpenJPA with Derby 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 Derby database server (0.0082) to the normalized speed of Hibernate with Derby embedded database (2.3) reveals that in that case, Hibernate with Derby embedded is 280 times faster than OpenJPA with Derby server.

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

Transaction/Retrieval Size	Few Entities		Many Entities		Average Score
	OpenJPA Derby server	Hibernate Derby embedded	OpenJPA Derby server	Hibernate Derby embedded	OpenJPA Derby server	Hibernate Derby embedded
Basic Person Test	7.2	15.5	5.5	6.9	6.4	11.2
Element Collection Test	0.84	10.2	1.5	2.8	1.2	6.5
Inheritance Test	1.1	9.7	2.9	7.7	2.0	8.7
Indexing Test	2.3	6.5	7.8	9.0	5.1	7.8
Graph (Binary Tree) Test	0.27	2.0	0.41	1.7	0.34	1.8
Multithreading Test	10.7	17.3	8.0	7.3	9.4	12.3
All Tests	3.9	10.5	4.5	6.1	4.2	8.3

The results above show that in general Hibernate with Derby embedded is more efficient than OpenJPA with Derby server in performing JPA database operations.

A huge performance gap has been detected when using JPA element collections with small transaction/retrieval size. Comparing the normalized speed of OpenJPA with Derby database server (0.84) to the normalized speed of Hibernate with Derby embedded database (10.2) reveals that in that case, Hibernate with Derby embedded is 12.1 times faster than OpenJPA with Derby server.

JPA Performance Benchmark (JPAB)