On Tue, Mar 21, 2017 at 10:01 AM, Amit Kapila <amit.kapil...@gmail.com> wrote:
>> I think that very wide columns and highly indexed tables are not
>> particularly unrealistic, nor do I think updating all the rows is
>> particularly unrealistic.  Sure, it's not everything, but it's
>> something.  Now, I would agree that all of that PLUS unlogged tables
>> with fsync=off is not too realistic.  What kind of regression would we
>> observe if we eliminated those last two variables?
> Sure, we can try that.  I think we need to try it with
> synchronous_commit = off, otherwise, WAL writes completely overshadows
> everything.

synchronous_commit = off is a much more realistic scenario than fsync = off.

Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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