On 2017-02-06 15:39:10 -0500, Peter Eisentraut wrote: > On 2/6/17 6:28 AM, Konstantin Knizhnik wrote: > > I wonder why do we prohibit now configuration of Postgres without mmap? > > It's not really prohibited, but it's not something that people generally > need, and we want to keep the number of configuration variations low.
I think that was a fairly bad call. Making it hard to use anything but mmap (on mmap supporting platforms) caused a fair bit of trouble and performance regressions on several platforms by now (freebsd reported it fairly quickly, and now aix), all to avoid a trivial amount of code and one guc. FWIW, there's a patch somewhere in the archive making it configurable. - Andres -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers