On Mon, May 12, 2014 at 7:10 PM, Greg Stark <st...@mit.edu> wrote: > Would it be useful to store the current WAL insertion point along with > the "about to commit" flag so it's effectively a promise that this > transaction will commit no earlier than XXX. That should allow most > transactions to decide if those records are visible or not unless > they're very recent transactions which started in that short window > while the committing transaction was in the process of committing.
I don't believe this is worth the complexity. The contention window is extremely short here. Regards, Ants Aasma -- Cybertec Schönig & Schönig GmbH Gröhrmühlgasse 26 A-2700 Wiener Neustadt Web: http://www.postgresql-support.de -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers