Hi Athanasios, Did you experience slow queries ? Are you sure to use all the index features ? Are these queries operational ones (direct access on a key value) or analytics ? I never experienced slow queries, even on huge xml corpus (patent registrations), But this is at the cost of longer indexing times on updates. Best regards, -----Message d'origine----- De : basex-talk-bounces@mailman.uni-konstanz.de [mailto:basex-talk-bounces@mailman.uni-konstanz.de] De la part de Anastasiou A. Envoyé : vendredi 15 septembre 2017 14:01 À : basex-talk@mailman.uni-konstanz.de Objet : [basex-talk] Basex Inner Workings Hello everyone Quick question: Is there any document / URL where I could find out more about how does Basex access the disk during its operation? For example, are there any reads to be expected during executing a query? Through iotop, I can see 3-4 processes reading during startup, then another 2, very briefly firing when opening the database and then during querying there are periodic writes (?) but of very brief duration. I was wondering if there is anything that could be done from the point of view of the hardware to speed up queries (?) (except a more powerful machine at the moment) All the best Athanasios Anastasiou