Performance Benchmark Report

Environment

Hardware

Dell Precison M3800 Laptop
8x Intel(R) Core(TM) i7-4712HQ CPU @ 2.30GHz
12Gb RAM
SSD

Software

Arch Linux OS
glibc 2.26-11
python 3.5.4
lmdb 0.9.21-1
db (BerkeleyDB) 5.3.28-3

Benchmark script

Generator script

The script was run with default values: 10,000 children under the same parent, PUT requests.

Data Set

Synthetic graph created by the benchmark script. The graph is unique for each request and consists of 200 triples which are partly random data, with a consistent size and variation:

50 triples have an object that is a URI of an external resource (50 unique predicates; 5 unique objects).
50 triples have an object that is a URI of a repository-managed resource (50 unique predicates; 5 unique objects).
100 triples have an object that is a 64-character random Unicode string (50 unique predicates; 100 unique objects).

Results

FCREPO/Modeshape 4.7.5

15'45" running time 0.094" per resource 3.4M triples total in repo at the end of the process

Retrieval of parent resource (~10000 triples), pipe to /dev/null: 3.64"

Peak memory usage: 2.47Gb Database size: 3.3 Gb

LAKEsuperior Alpha 6, LMDB Back End

25' running time 0.152" per resource

Some gaps every ~40-50 requests, probably disk flush

Retrieval of parent resource (10K triples), pipe to /dev/null: 2.13"

Peak memory usage: ~650 Mb (3 idle workers, 1 active) Database size: 523 Mb

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