From: | Evgeniy Shishkin <itparanoia(at)gmail(dot)com> |
---|---|
To: | AJ Weber <aweber(at)comcast(dot)net> |
Cc: | "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org> |
Subject: | Re: autovacuum fringe case? |
Date: | 2013-01-23 19:03:25 |
Message-ID: | 3EB000F8-7FC6-4693-9451-8A263DBD0452@gmail.com |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-performance |
On 23.01.2013, at 20:53, AJ Weber <aweber(at)comcast(dot)net> wrote:
> I have a server that is IO-bound right now (it's 4 cores, and top indicates the use rarely hits 25%, but the Wait spikes above 25-40% regularly). The server is running postgresql 9.0 and tomcat 6. As I have mentioned in a previous thread, I can't alter the hardware to add disks unfortunately, so I'm going to try and move postgresql off this application server to its own host, but this is a production environment, so in the meantime...
>
> Is it possible that some spikes in IO could be attributable to the autovacuum process? Is there a way to check this theory?
>
Try iotop
> Would it be advisable (or even permissible to try/test) to disable autovacuum, and schedule a manual vacuumdb in the middle of the night, when this server is mostly-idle?
>
> Thanks for any tips. I'm in a bit of a jam with my limited hardware.
>
> -AJ
>
>
>
> --
> Sent via pgsql-performance mailing list (pgsql-performance(at)postgresql(dot)org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-performance
From | Date | Subject | |
---|---|---|---|
Next Message | Jeff Janes | 2013-01-23 19:13:48 | Re: autovacuum fringe case? |
Previous Message | AJ Weber | 2013-01-23 16:53:57 | autovacuum fringe case? |