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https://issues.apache.org/jira/browse/SOLR-6275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14076749#comment-14076749
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Mark Miller edited comment on SOLR-6275 at 7/29/14 2:25 PM:
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This one perhaps? http://shipilev.net/blog/2014/nanotrusting-nanotime/
There were 2 good posts on nanotime floating around a couple/few months ago, so
perhaps the other one. In any case, easy enough to spot check with a simple
benchmark I think. Though there are then the variations between OS's and such,
but I'm sure that would come to our attention and wouldn't be very
{color:red}likely{color} if it's not really noticeable on one setup.
was (Author: markrmil...@gmail.com):
This one perhaps? http://shipilev.net/blog/2014/nanotrusting-nanotime/
There were 2 good posts on nanotime floating around a couple/few months ago, so
perhaps the other one. In any case, easy enough to spot check with a simple
benchmark I think. Though there are then the variations between OS's and such,
but I'm sure that would come to our attention and wouldn't be very if it's not
really noticeable on one setup.
> 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
> Priority: Minor
>
> 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.
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