On 12月22日, 下午11时26分, gryz...@xxxxxxxxx (Grzegorz Jaśkiewicz) wrote: > On Tue, Dec 22, 2009 at 10:19 AM, Thomas <freebsd...@xxxxxxxxx> wrote: > > Does it write data to data files to make buffer "clean"?if it > > does ,but I can not find open files from the result of lsof -p > > PID. > > writer actually takes care about writing pages down, from shared > memory. It is the central point that accesses disk on behalf of all > backends (which are spawned every time you create new connection). > > -- > GJ > > -- > Sent via pgsql-general mailing list (pgsql-gene...@xxxxxxxxxxxxxx) > To make changes to your subscription:http://www.postgresql.org/mailpref/pgsql-general hi GJ Tks a lot . And could you give me some info about postgres internals? Such as ebooks or online articles. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general