Log Message:
-----------
Speed up CREATE DATABASE by deferring the fsyncs until after copying
all the data and using posix_fadvise to nudge the OS into flushing it
earlier. This also hopefully makes CREATE DATABASE avoid spamming the
cache.
Tests show a big speedup on Linux at least on some filesystems.
Idea and patch from Andres Freund.
Modified Files:
--------------
pgsql/src/backend/storage/file:
fd.c (r1.153 -> r1.154)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/storage/file/fd.c?r1=1.153&r2=1.154)
pgsql/src/include/storage:
fd.h (r1.66 -> r1.67)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/include/storage/fd.h?r1=1.66&r2=1.67)
pgsql/src/port:
copydir.c (r1.25 -> r1.26)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/port/copydir.c?r1=1.25&r2=1.26)
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