On Jan7, 2014, at 00:38 , Jim Nasby <j...@nasby.net> wrote: > This email and the previous one are an awesome bit of information, > can we add it to the docs somehow? Even if it's just dumping the > emails into a wiki page and referencing it?
Most of what I wrote there can be found in README-SSE, I think, under "Apparent Serial Order of Execution", "Heap locking" and "Index AM implementations". I guess it'd be nice if we explained these things in the docs somewhere, though I'm not sure what level of detail would be appropriate. Maybe a good compromise would be to explain dependency graphs, but skip over the different kinds of dependencies (ww, rw, wr). Instead we could say that whenever a transaction *does see* another transaction's modifications it must appear after that transaction in any serial schedule, and whenever a transaction *might see* another transaction's modifications but doesn't due to begin/commit ordering it must appear before that transaction. best regards, Florian Pflug -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
