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https://issues.apache.org/jira/browse/SOLR-6275?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ramkumar Aiyengar updated SOLR-6275:
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Description: Currently, {{QTime}} uses {{currentTimeMillis}} instead of
{{nano Time}} and hence is not suitable for time measurements. Further, it is
really started after all the dispatch logic in {{SolrDispatchFilter}} (same
with the top level timing reported by {{debug=timing}}) which may or may not be
expensive, and hence may not fully represent the time taken by the search. This
is to remedy both cases. (was: Currently, {{QTime}} uses {{currentTimeMillis}}
instead of {{nanoTime}} and hence is not suitable for time measurements.
Further, it is really started after all the dispatch logic in
{{SolrDispatchFilter}} (same with the top level timing reported by
{{debug=timing}}) which may or may not be expensive, and hence may not fully
represent the time taken by the search. This is to remedy both cases.)
> Improve accuracy of QTime reporting
> -----------------------------------
>
> Key: SOLR-6275
> URL: https://issues.apache.org/jira/browse/SOLR-6275
> Project: Solr
> Issue Type: Improvement
> Components: search
> Reporter: Ramkumar Aiyengar
> Assignee: Ramkumar Aiyengar
> Priority: Minor
> Attachments: SOLR-6275.patch
>
>
> Currently, {{QTime}} uses {{currentTimeMillis}} instead of {{nano Time}} and
> hence is not suitable for time measurements. Further, it is really started
> after all the dispatch logic in {{SolrDispatchFilter}} (same with the top
> level timing reported by {{debug=timing}}) which may or may not be expensive,
> and hence may not fully represent the time taken by the search. This is to
> remedy both cases.
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