On Thu, 2014-08-14 at 12:52 -0400, Robert Haas wrote: > It appears to me that the performance characteristics for this version > are not significantly different from version 1. I have not looked at > the code.
While trying to reproduce your results, I noticed what might be around a 1% regression just from adding the 3 fields to MemoryContextData. If I cut it down to adding just one field, the regression disappears. The results are fairly noisy, so I could be chasing the wrong thing. But one reason to believe it is that I pushed the size of MemoryContextData above 64, which sounds like it might be an important threshold. Regards, Jeff Davis -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers