That’s a very odd drop.  The only lucene commit that happened around then is 
LUCENE-8018, which really shouldn’t be making a difference to query 
performance.  And there’s no change to the PhraseQuery graphs.

Alan Woodward
www.flax.co.uk


> On 13 Nov 2017, at 14:16, Rob Audenaerde <[email protected]> wrote:
> 
> Hi all,
> 
> There seems to be a performance drop in some benchmarks, see:
> 
> https://home.apache.org/~mikemccand/lucenebench/Term.html 
> <https://home.apache.org/~mikemccand/lucenebench/Term.html>
> https://home.apache.org/~mikemccand/lucenebench/TermGroup10K.html 
> <https://home.apache.org/~mikemccand/lucenebench/TermGroup10K.html>
> https://home.apache.org/~mikemccand/lucenebench/AndMedOrHighHigh.htm 
> <https://home.apache.org/~mikemccand/lucenebench/AndMedOrHighHigh.html>l 
> <https://home.apache.org/~mikemccand/lucenebench/AndMedOrHighHigh.html>
> 
> etc.
> 
> Maybe it's worth annotating what caused this drop?
> 
> Thanks,
> -Rob

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