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  • Re: Performance degradation on repeated querying

    Sorry, but I currently do not have the time to strip down an example to show it here. But you may have a look to the attached jprofiler cpu call tree comparison: it shows the difference of cpu usage times for two queries (from within two processes/java vms) ... or do I misinterpret it when saying that there seems to be created some additional ...
    Posted to db4o User Forum (Forum) by jstammi on October 23, 2007
  • Performance degradation on repeated querying

    Hi there, with querying a db4o db repeatedly several times the same way (ant task: open db, query, close db - no explicite data modification) we observed exponential increase in time needed to fetch the query results. First time it took some milliseconds. In the end after about 20 runs it took minutes. By way of jprofiler (cpu callgraph ...
    Posted to db4o User Forum (Forum) by jstammi on October 22, 2007