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https://issues.apache.org/jira/browse/JENA-1550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16481944#comment-16481944
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Andy Seaborne edited comment on JENA-1550 at 5/20/18 2:09 PM:
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The speed jumps in parse to node table don't free anything until the end of the
parser. The count output is coming from the parser.
There is a chance it is due to the data - reaching a point where there is a
lower density of new nodes .
But also it could be that it is another level of JIT compilation cutting in. Up
to 25M, file caching is comfortable within memory so the task is not I/O bound.
The memory bandwidth goes up with increased speed so that leaves CPU.
was (Author: andy.seaborne):
The speed jumps in parse to node table don't free anything until the end of the
parser. The count output is coming from the parser.
There is a chance it is due to the data - reaching a point where there is a
lower density of less new nodes .
But also it could be that it is another level of JIT compilation cutting in. Up
to 25M, file caching is comfortable within memory so the task is not I/O bound.
The memory bandwidth goes up with increased speed so that leaves CPU.
> Bulk loader for TDB2.
> ---------------------
>
> Key: JENA-1550
> URL: https://issues.apache.org/jira/browse/JENA-1550
> Project: Apache Jena
> Issue Type: Improvement
> Components: TDB2
> Affects Versions: Jena 3.7.0
> Reporter: Andy Seaborne
> Assignee: Andy Seaborne
> Priority: Major
>
> Provide a bulk loader for TDB2.
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