bruns created this revision. bruns added reviewers: Baloo, ngraham. Herald added projects: Frameworks, Baloo. Herald added a subscriber: kde-frameworks-devel. bruns requested review of this revision.
REVISION SUMMARY The next() call will recurse once for each document in the first set until all iterators align, which is especially bad when the first term is common. It will only advance the first iterator just by one, although it could skip to the largest id in the set. Use skipTo on each iterator until none of the iterators moves forward, and in case the iterator has moved use the new position as new lower bound. If one of of the iterators only contains a small set, the iterators on average will be moved much further in each round. As skipTo(...) and next() are mostly identical with this approach next() can be trivially implemented with skipTo. Depends on D28839 <https://phabricator.kde.org/D28839> REPOSITORY R293 Baloo BRANCH submit REVISION DETAIL https://phabricator.kde.org/D28843 AFFECTED FILES src/engine/andpostingiterator.cpp src/engine/andpostingiterator.h To: bruns, #baloo, ngraham Cc: kde-frameworks-devel, hurikhan77, lots0logs, LeGast00n, cblack, fbampaloukas, domson, ashaposhnikov, michaelh, astippich, spoorun, ngraham, bruns, abrahams
