Re: Ever Increasing IOWAIT

Ralph Mason wrote:
> We have a database running on a 4 processor machine.  As time goes by
> the IO gets worse and worse peeking at about 200% as the machine loads up.
>
>
>
> The weird thing is that if we restart postgres it’s fine for hours but
> over time it goes bad again.
>
>
>
> (CPU usage graph here
> http://www.flickr.com/photos/8347741@N02/502596262/ )  You can clearly
> see where the restart happens in the IO area
>
>
>
> This is Postgres  8.1.4 64bit.

1. Upgrade to 8.1.9. There is a bug with autovac that is fixed that is
pretty important.

>
>
>
> Anyone have any ideas?
>

Sure... you aren't analyzing enough. You are using prepared queries that
have plans that get stale... you are not running autovac... You are
cursed (kidding)..

Joshua D. Drake

>
>
> Thanks
>
> Ralph
>
>
>
>
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