Performance

Performance Benchmarks

All the performance benchmarks done in various configuration and regression testing, have delivered consistent results.

NitroCache scales with O(c) as number of threads increase. The fetch time remains constant irrespective of thread load.

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Performance Benchmark: NitroCache / EHCache / Infinispan / JCS / Cach4j

Goal

1. To run a fixed set of operations on 5 popular cache api and benchmark their in-memory performance, with increase in number of thread
2. Evaluate total time for fetch, put operations and throughput (number of operations per second)

System Configuration

System Type	x64-based PC
Processor	Intel(R) Core(TM) i5 CPU 650@3.20GHz, 3333 Mhz, 2 Core(s), 4 Logical Processor(s)
OS	Windows 7

Libraries

Cache	Library
NitroCache	nitroCache.jar v0.4Beta
Cach4j	cache4j_0.4.jar
Ehcache	ehcache-1.2.3.jar
JCS	jcs-1.3.jar
Infinispan	core-4.0.0.Final.jar

Testing Setting:

1. All caches set to run in complete in-memory mode
2. Seven tests run per cache api with following setting
3. Rest of the settings are default

Setting Id	Cache Size	Threads	Number of Fetch Operations	Number of Put Operations	Number of unique keys per Thread
1	5000	1	400,000,000	20,000,000	10,000,000
2	5000	2	400,000,000	20,000,000	5,000,000
3	5000	5	400,000,000	20,000,000	2,000,000
4	5000	10	400,000,000	20,000,000	1,000,000
5	5000	15	399,600,000	19,980,000	666,667
6	5000	25	400,000,000	20,000,000	400,000
7	5000	50	400,000,000	20,000,000	200,000

Test Data

A random set of 2000 key/value pairs of integers used as seed data. These 2000 keys are then appended with loop id to generate secondary keys. See the AllTest.java from test-src zip in the download section for sample test.

Results

1. Total Fetch Time in Seconds by thread

Threads	Cache4j	EhCache	Infinispan	JCS	Nitro FIFO	Nitro LRU
1	334.02	60.50	373.40	115.90	70.10	61.05
2	1,132.93	277.37	474.05	480.35	85.88	149.06
5	2,875.26	759.24	516.98	997.20	126.53	164.87
10	5,711.93	1,748.20	495.62	1,497.55	122.21	139.80
15	8,703.11	2,494.02	475.10	887.05	122.02	136.11
25	14,893.28	4,500.01	443.93	912.71	126.51	133.57
50	29,921.08	8,547.90	427.26	849.77	109.96	132.88

2. Total Put Time in Seconds by thread

Threads	Cache4j	EhCache	Infinispan	JCS	Nitro FIFO	Nitro LRU
1	34.85	23.38	72.39	137.66	20.66	20.41
2	66.91	43.46	103.57	371.08	50.27	107.47
5	151.11	94.44	354.87	883.66	120.11	499.97
10	281.84	172.47	1,179.43	2,605.02	444.45	1,165.58
15	419.62	239.93	2,062.05	5,297.97	731.53	1,816.03
25	679.09	390.27	3,572.85	9,449.96	1,323.78	3,106.88
50	1,434.40	699.67	7,541.39	19,065.07	2,733.08	6,163.37

[[img src=PutTimeByThreadsAll.jpg alt="Graph for Put Time by thread"]

3. Fetch Throughput: Thousand operations/second

Threads	Cache4j	EhCache	Infinispan	JCS	Nitro FIFO	Nitro LRU
1	1,197.55	6,611.79	1,071.24	3,451.13	5,705.89	6,551.68
2	353.07	1,442.11	843.79	832.72	4,657.61	2,683.43
5	139.12	526.85	773.73	401.12	3,161.21	2,426.17
10	70.03	228.81	807.07	267.10	3,273.05	2,861.19
15	45.91	160.22	841.08	450.48	3,274.82	2,935.88
25	26.86	88.89	901.05	438.26	3,161.86	2,994.68
50	13.37	46.80	936.20	470.71	3,637.69	3,010.19

4. Total Throughput: In thousand operations/second

Threads	Cache4j	EhCache	Infinispan	JCS	Nitro FIFO	Nitro LRU
1	1,167.85	6,337.68	1,033.39	3,293.71	5,480.28	6,286.36
2	350.49	1,395.35	812.80	795.64	4,454.76	2,564.51
5	138.80	511.84	739.57	383.10	3,018.60	2,312.54
10	70.07	223.43	769.45	254.75	3,119.34	2,725.76
15	46.00	156.56	801.49	429.21	3,120.18	2,796.60
25	26.98	87.10	858.41	417.49	3,012.01	2,852.39
50	13.40	45.93	891.74	448.35	3,464.81	2,867.00

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Conclusion

1. NitroCache provides highest throughput and a consistent performance irrespective of number of threads

2. Infinispan provides next best result in terms of throughput and fetch performance

3. Ehcache and cach4j are fastest for put operations but slowest for fetch

4. JCS is slowest for put operation but overall throughput is average, in between infinispan and Ehcache

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Profiling Data

Charts of Memory usage/GC, CPU usage percentage v/s Live Thread

1. Nitro FIFO

2. Nitro LRU

3. Cach4j

4. EhCache

5. Infinispan

6. JCS