Details
Major Description
Opendaylight's distribution-check jobs generate features which have complex feature dependencies, which exposes scaling issues in karaf:features-generate-descriptor.
https://github.com/opendaylight/integration-distribution/tree/master/features/singles/odl-integration-all takes ~270 seconds to generate:
real 4m28.834s
user 3m40.287s
sys 1m23.629s
https://github.com/opendaylight/integration-distribution/tree/master/features/repos/index takes ~638 seconds to generate:
real 10m38.859s
user 7m55.004s
sys 3m17.269s
Running profiling shows that this time is dominated by short-lived FileInputStreams being generated at a rate of 7K-8Kps – which are coming from both feature reading and from artifact resolution.