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Suspected performance regression in grafter-2.rdf4j.sparql/query due to spec conforming args #151

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RickMoynihan opened this issue Sep 30, 2019 · 0 comments
Open

Suspected performance regression in grafter-2.rdf4j.sparql/query due to spec conforming args #151

RickMoynihan opened this issue Sep 30, 2019 · 0 comments

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@RickMoynihan
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I could be wrong but it looks like the calls to s/conform in the -query multimethod here add a relatively significant overhead to some queries.

For some relatively simple queries the overhead appears to be about 1/4 of the total query time. See the flamegraph below:

Screenshot 2019-09-30 at 12 51 19
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