session waiting IO while background writer writing data

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От James Pang
Тема session waiting IO while background writer writing data
Дата
Msg-id CAHgTRfd4kwVBgQ5Pc+i+CRTRaWm1y7wGpZMyMEbfdyjG7bGKVg@mail.gmail.com
обсуждение исходный текст
Список pgsql-performance
Дерево обсуждения
   pgv14.8 , we found all session waiting on "DataFileWrite", and at the same time, background writer is doing IO and waiting on "DataFileWrite". Is it possible to see "background writer" block or impact user sessions IO "DatafileWrite" if both running at the same time ? 

Thanks,

James

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