D24540: [Database] Disable read-ahead to reduce thrashing

[Kai Krakow]

hurikhan77 added a comment.


  Here's a quote:
  https://github.com/bmatsuo/lmdb-go/issues/118#issuecomment-325449496
  
  I suspect that we can safely say: The Baloo DB is always bigger than the available RAM (we shouldn't fight with what the desktop needs, so let's say we have maybe 20% of the installed RAM at our disposal which is already a high assumptions for typical systems).

REPOSITORY
  R293 Baloo

REVISION DETAIL
  https://phabricator.kde.org/D24540

To: hurikhan77, ngraham, #baloo, bruns
Cc: bruns, kde-frameworks-devel, ngraham, #baloo, hurikhan77, lots0logs, LeGast00n, fbampaloukas, GB_2, domson, ashaposhnikov, michaelh, astippich, spoorun, abrahams
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