the selected page is clean, we're set.
*/
if (!shared->page_dirty[bestvalidslot])
return bestvalidslot;
--发件人：Andres
Freund 发送时间：2015年9月9日(星期三) 02:28收件人：周正中(德歌)
抄 送：Amit Kapila ，张广舟(明虚)
，pgsql-hackers
，范孝剑(康贤) ，曾文旌(义从)
，窦贤明(执白) ，萧少聪(铁庵)
，陈新坚(惧留孙) 主 题：Re:
rc/backend/storage/file/fd.c:1710").return,
par:14
2088013 postgres(2924): -> time:1441503929819,
pp:process("/opt/pgsql9.4.4/bin/postgres").function("pg_fsync@/opt/soft_bak/postgresql-9.4.4/src/backend/storage/file/fd.c:315").call,
par:fd=14
2089250 postgres(2924): <
>On 2015-09-10 19:39:59 +0800, 张广舟(明虚) wrote:
>> We found there is a fsync call when CLOG buffer
>> is written out in SlruPhysicalWritePage(). It is often called when a backend
>> needs to check transaction status with SimpleLruReadPage().
>That's when there's not enough buffers available some ot
