poor performance on big collections
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Key: JCR-1501
URL: https://issues.apache.org/jira/browse/JCR-1501
Project: Jackrabbit
Issue Type: Improvement
Components: jackrabbit-jcr2spi
Reporter: Julian Reschke
With JCR-1437, I have added tests for measuring performance, both using "plain"
Jackrabbit and through JCR2SPI.
There are three tests (inside BigCollectionTest), all creating a collection of
500 nt:file nodes.
- testGetChildren just instantiates the nodes
- testBrowseMinusJcrData simulates browsing (getting metadata), but does not
read jcr:data
- testBrowse simulates browsing (getting metadata), including obtaining the
content length (jcr:data)
The tests can be run using
mvn -Dtest=JCRBenchmark test
under both jackrabbit-core and jackrabbit-jcr2spi.
The results that I see are:
For plain Jackrabbit:
testGetChildren: 0.20 ms per iteration
testBrowseMinusJcrData: 1.15 ms per iteration
testBrowse: 2.55 ms per iteration
With JCR2SPI, I see:
testGetChildren: 281 ms per iteration
testBrowseMinusJcrData: 577 ms per iteration
testBrowse: 643 ms per iteration
So, at least for these tests, JCR2SPI is several orders of magnitude slower.
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