Matthieu Patou PDF - sambaXP

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Making it faster and scalier:Things in progressCode is not yet in master but at my git tree in the branch ldb_perfs» Casefolding can represent 50% of the time spent in the search» Let's store the DN in the index already case folded, better paythe price for case folding only once (when stored) than milliontime (when read)» Let's use the DN of the index for cheching if the record matchthe DN and the scope of the search, so that we don't recasefold» Freeing talloced object can at the end be expensive, allocatingand freeing object that you don't need is a important waste ofresource and can account for 20/30% of the time of thesearch» Check if the object match the DN and the scope of the searchbefore loading the object, by using either DN from the index
entry or the key (which is a DN) passed the search_func. So thatwe don't load objects that we don't need» Provide a list of attribute we need to the unpack function so thatwe skip the attributes we don't need» Remove double loops in the operational module, so that wespeedup the processing of each object returned by the search
Page 1: Smaller, faster, scalierPerformance
Page 4 and 5: » What about OpenLDAP ?» My queri
Page 6 and 7: How did it started ?» Last year ar
Page 8: Speeding up schemamodification (1/2
Page 11 and 12: » It slows down quite a lot applic
Page 13 and 14: would do it only after 120 seconds
Page 15 and 16: criteria (objectclass=user)» Will
Page 17: for non indexed attributes» Each D
Page 21 and 22: » 20% speed improvments in make te
Page 23 and 24: » Should speed up the verification
Page 25 and 26: My queries are slow, what can Ido ?
Page 27: Thank youThanks for listenningA cop

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