On Tue, 10 Nov 2015 10:44:37 +0000 Alan Hicks <ahi...@p-o.co.uk> wrote:
> Hi, > > This slowing down might be able to be refactored out as I'm unsure why, > on inserting a message, a tree of messages is needed. I haven't looked > at the code recently but didn't think dbmail retrieved the messages > before or after an insert. > > It's normal for databases to prefer a table scan rather than use an > index when it thinks the number of rows exceeds the benefit of using an > index. > > Alan I did some more "printf style" profiling on that while loop with some interesting results. If I put calls to clock_gettime just outside of a loop and display difference at the end, I get say 14.something seconds. If I put these calls inside the loop and print out the duration of each pass thru the loop and then sum them up, I get about 0.04 second. So I'm either doing something wrong or something interesting is going on inside libzdb, to which db_result_next(r) translates. Digging further ... -- Jure Pečar https://jure.pecar.org http://f5j.eu _______________________________________________ DBmail mailing list DBmail@dbmail.org http://mailman.fastxs.nl/cgi-bin/mailman/listinfo/dbmail
