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</o:shapelayout></xml><![endif]--></head><body lang=DE-CH link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>I run a small benchmark around journaling and .Flush after each INSERT/UPDATE/DELETE.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I start with a new, empty database and insert a few thousands records. Here the times<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Journaling+Flush: 40 Min.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Journaling only: 3 Min.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Flush only: 4 Min.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>None: 3 Min.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>This will show you that journaling doesn’t cost much time. But as soon as you make a change an flush this to the DB there will be a huge overhead (writing to journal, flush to disk, removing flushed data from journal…).<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>What I still not understand is what journaling exactly does: contains the .journal file all INSERT/UPDATE/DELETE data since the last flush and after a crash this data will be inserted into the DB so the user doesn’t be aware of data loss? If this statement is right and I do not flush myself how often does Valentina call the flush method itself (only if cache is full or all xxx msec…)?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:DE-CH'>Regards<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:DE-CH'>Fabian<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>