meven added a comment.
@dfaure I think that ioslave suffer from the same kind of issue DeleteJob has : it freezes because of I/O. I believe it is the origin lag in such cases as https://bugs.kde.org/show_bug.cgi?id=342056 especially on slow I/O operation like move/copy. I don't get though how kded5 can get UIs to be affected. My two hypothesis is that App makes synchronous calls to KIO::* themselves blocked by kded not responding because of I/O freeze or that Apps are jagged because kded socket because unresponsive. Anyway I think we should tackle both issue : Apps should not freeze/lag because of kded not being responsive, kded should not freeze because of I/O. TASK DETAIL https://phabricator.kde.org/T11627 To: meven Cc: ognarb, #dolphin, #frameworks, meven, dfaure, pberestov, iasensio, fprice, LeGast00n, MrPepe, fbampaloukas, alexde, GB_2, Codezela, feverfew, michaelh, spoorun, navarromorales, firef, ngraham, andrebarros, bruns, emmanuelp, mikesomov