On Wed, Jan 15, 2014 at 11:49:09AM +0000, Mel Gorman wrote:
> It may be the case that mmap/madvise is still required to handle a double
> buffering problem but it's far from being a free lunch and it has costs
> that read/write does not have to deal with. Maybe some of these problems
> can be fixed or mitigated but it is a case where a test case demonstrates
> the problem even if that requires patching PostgreSQL.
We suspected trying to use mmap would have costs, but it is nice to hear
actual details about it.
-- Bruce Momjian <bruce@momjian.us> http://momjian.us EnterpriseDB
http://enterprisedb.com
+ Everyone has their own god. +
