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OAI-PMH data harvesting [iris]

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PERF-144 - Getting issue details... STATUS PERF-144 - Getting issue details... STATUS


PERF-144 - Getting issue details... STATUS





PERF-144 - Getting issue details... STATUS



Overview

The purpose of this test report is to highlight results from mod-oai-pmh harvesting tests. 

Test flow

Test consist of few calls:

Initial call:

  • /oai/records?verb=ListRecords&metadataPrefix=marc21_withholdings&apikey=[APIKey] - performing only once

Harvesting call:

  • /oai/records?verb=ListRecords&apikey=[APIKey]&resumptionToken=[resumptionToken] - performing cyclically until there is data in [tenant]_mod_oai_pmh.instances table to harvest.

[resumptionToken] returning in initial call response and in each harvesting call until there is something to harvest. When all data has being harvested - resumptionToken will not return with response.


Environment:

  • 61 back-end modules deployed in 110 ECS services
  • 3 okapi ECS services
  • 8 m5.large  EC2 instances
  • 2 db.r5.xlarge AWS RDS instance (1 reader, 1 writer)

Software version

mod-oai-pmh 3.4.2

Summary 

We're able to harvest all data set we have, which is 7.2 M records with different "Max records per response" parameter value.


Tests and results


testMax records per responseTime to completeResultIssues
11006 hours 26 minutesall data harvestedGrowing CPU/RAM usage
23002 hours 31 min5.5 M records harvestedconnection lost with load generator
not an oai-pmh issue
35002 hour 27 minall data harvestedGrowing CPU/RAM usage


Service CPU usage


Service Memory usage





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