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fsync on ext4 does not work - Mailing list pgsql-general

From	Havasvölgyi Ottó
Subject	fsync on ext4 does not work
Date	December 19, 2011 11:52:31
Msg-id	CAOryeA1EoiFpmG6HmQakWYWtH6vqxLPxw3JeUocnjpnBuySf9A@mail.gmail.com Whole thread
Responses	Re: fsync on ext4 does not work Re: fsync on ext4 does not work Re: fsync on ext4 does not work
List	pgsql-general

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Hi all,

Somewhy fsync does not work for me.

PgSql 9.1.2

Debian, 2.6.32 kernel

WAL filesystem: ext4 with defaults

config:
fsync=on
sync_commit=on
wal_sync_method=fsync

Even though the TPS in pgbench about 700 with 1 client.
I have tried other sync methods (fdatasync, open_sync), but all are similar.
Should I disable write cache on HDD to make it work?

Have you any idea why?

Thanks,
Otto

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fsync on ext4 does not work - Mailing list pgsql-general

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