Matthieu Patou PDF - sambaXP

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So:Making faster and scalier:some details on how ourcurrent database» Samba 4 use ldb for storing the data, it's a tdb databasebehind the scene» Key is the casefolded version of the DN» Value is complete LDAP record, you have to unpack the wholerecord to easily access a field» Index are also key/value, where the value is actually the DN ofthe record that match the entry» For every indexed search, we search the index(es), get theDN, fetch the objects that match the index, finish the filtering
for non indexed attributes» Each DN of the index has to be casefolded in order to be ableto search for the associated record» For each record we will casefold the DN in order to see ifmatch the DN and the scope of the search» Unpacking the object means a lot of talloc calls (between 50and 100 per object)
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: criteria (objectclass=user)» Will
Page 19 and 20: entry or the key (which is a DN) pa
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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