Marti Raudsepp <ma...@juffo.org> writes:
> PostgreSQL's default settings change when built with Linux kernel
> headers 2.6.33 or newer. As discussed on the pgsql-performance list,
> this causes a significant performance regression:
> http://archives.postgresql.org/pgsql-performance/2010-10/msg00602.php
> NB! I am not proposing to change the default -- to the contrary --
> this patch restores old behavior.
I'm less than convinced this is the right approach ...
If open_dsync is so bad for performance on Linux, maybe it's bad
everywhere? Should we be rethinking the default preference order?
regards, tom lane
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