Do checkpoints flush all data from shared buffers ?

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От Fabrice Franquenk
Тема Do checkpoints flush all data from shared buffers ?
Дата
Msg-id 44AE2E53.2020406@bull.net
обсуждение исходный текст
Список pgsql-general
Hello,
   I was wondering if each checkpoint would flush all transactions from
the shared buffers or if there could be some left at the end of the
checkpoint ?
Because i was trying to lower I/Os of the disks, i got the checkpoint
timeout lowered to 150 seconds so i get twice the number the checkpoint.
I was hoping it would reduce the number of  I/Os on the disks because
there would be less data to write in datafiles...

Thanks in advance for your help

regards,
            Fabrice Franquenk

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