Performance

Although performance numbers should always be taken with a pinch of salt, this page collects some of our findings.

Source-to-Emitter

One of the very first test cases on this topic tries to measure the message throughput for a very simple pipeline set up: read messages from a random event generator and pass it on to an emitter.

For this test case the event generator produces a fixed number of items (10.000.000). The emitter receives a count-down latch which is decremented for each incoming item.

When the count-down latch reaches zero, the time is measured between pipeline execution and latch release.

As the default queue implementation is based on the OpenHFT Chronicle Queue, all contents are written to disk. Therefore the test case was carried out with two different setups:

• using the temporary folder on disk (SATA)
• using a ramdisk

All times provided as milliseconds. The setup this test was executed in is specified as follows:

• Intel i7-2600k
• 14GB RAM
• Hitachi HDS 72202 ALA330
• the message contained an empty string

Setup	Messages	Duration (all)	Duration (single, avg)	Duration (single, min)	Duration (single, max)
Temp	10.000.000	1269	0	0	9
Temp	20.000.000	2512	0	0	9
Temp	30.000.000	3782	0	0	7
Temp	40.000.000	4953	0	0	9
Temp	50.000.000	6543	0	0	5
Temp	100.000.000	16139	0	0	502
Ram	10.000.000	1081	0	0	5
Ram	20.000.000	2438	0	0	7
Ram	30.000.000	3618	0	0	9
Ram	40.000.000	4674	0	0	8
Ram	50.000.000	6003	0	0	16
Ram	100.000.000	12347	0	0	16
The test case can be found at MicroPipelineTest#test_performance1()