On Wed, Jul 3, 2013 at 02:23:11PM -0400, Bruce Momjian wrote: > On Sat, Nov 24, 2012 at 11:57:51AM +0900, Satoshi Nagayasu wrote: > > Hi, > > > > I found that the manual page for pg_buffercache module explains > > "usagecount" as "Page LRU count". > > > > http://www.postgresql.org/docs/devel/static/pgbuffercache.html > > > > However, AFAIK, "usagecount" is not a LRU count nowadays, because > > LRU is no longer used for the buffer management algorithm. > > > > I think it should be described as "Clock-sweep count" or something > > like that. > > > > And I'd like to add some additional explanation for the "forknumber" > > as below: > > > > "0 for heap file, 1 for FreeSpaceMap, and 2 for VisibilityMap". > > > > Any comments? > > Good suggestion. I ended up referencing the C file that contains the > "forknumber" definitions, rather than recreating the list in the docs. > I applied the attached patch to head and 9.3.
I ended up applying it to 9.2 as well. -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + It's impossible for everything to be true. + -- Sent via pgsql-docs mailing list (pgsql-docs@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-docs
