Re: checkpoints, proper config - Mailing list pgsql-performance

From Joshua D. Drake
Subject Re: checkpoints, proper config
Date
Msg-id 5669D9E6.8050104@commandprompt.com
Whole thread Raw
In response to Re: checkpoints, proper config  (Tory M Blue <tmblue@gmail.com>)
Responses Re: checkpoints, proper config  (Tory M Blue <tmblue@gmail.com>)
List pgsql-performance
On 12/10/2015 10:35 AM, Tory M Blue wrote:

>
> Thiis valid regardless of the workload?

Yes.


> Seems that I would be storing a
> ton of data and writing it once an hour, so would have potential perf
> hits on the hour. I guess I'm not too  up to date on the checkpoint
> configuration.

No, that isn't how it works.

http://www.postgresql.org/docs/9.4/static/wal-configuration.html

>
> My settings on this particular DB
>
> fsync = off

This will cause data corruption in the event of improper shutdown.

>
> #synchronous_commit = on
>

I would turn that off and turn fsync back on.

JD

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