On Fri, Jan 20, 2012 at 1:37 PM, Robert Haas <robertmh...@gmail.com> wrote: > On Sun, Jan 8, 2012 at 9:25 AM, Simon Riggs <si...@2ndquadrant.com> wrote: >> I've taken that idea and used it to build a second Clog cache, known >> as ClogHistory which allows access to the read-only tail of pages in >> the clog. Once a page has been written to for the last time, it will >> be accessed via the ClogHistory Slru in preference to the normal Clog >> Slru. This separates historical accesses by readers from current write >> access by committers. Historical access doesn't force dirty writes, >> nor are commits made to wait when historical access occurs. > > This seems to need a rebase.
Still applies and compiles cleanly for me. -- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
