=?gb2312?B?u8bTwM7A?= <yongwei.huang@xxxxxxxxx> writes: > My postgres version: 8.1.3; You do realize that version was obsoleted four years ago last week? If you're encountering multiprocessor performance problems you really need to get onto 8.3.x or later. regards, tom lane -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance