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

[Nathaniel Graham]

ngraham edited the summary of this revision.

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