On 2017-04-24 14:43:11 -0400, Tom Lane wrote: > (We have accepted that kind of overhead for DSM segments, but the > intention I think is to allow only very trivial data structures in > the DSM segments. Losing compiler pointer type checking for data > structures like the lock or PGPROC tables would be horrid.)
The relptr.h infrastructure brings some of the type-checking back, but it's still pretty painful. And just as important, it's quite noticeable performance-wise. So we have to do it for dynamic shm (until/unless we go to using threads), but that doesn't mean we should do it for some of the most performance critical data structures in PG... - Andres -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
