Re: Rather large LA - Mailing list pgsql-performance

From Alan Hodgson
Subject Re: Rather large LA
Date
Msg-id 201109051305.07010@hal.medialogik.com
Whole thread Raw
In response to Re: Rather large LA  (Richard Shaw <richard@aggress.net>)
Responses Re: Rather large LA  (Richard Shaw <richard@aggress.net>)
List pgsql-performance

On September 5, 2011, Richard Shaw <richard@aggress.net> wrote:

> Hi Andy,

>

> It's not a new issue no, It's a legacy system that is in no way ideal but

> is also not in a position to be overhauled. Indexes are correct, tables

> are up to 25 million rows.

>

> On startup, it hits CPU more than IO, I'll provide some additional stats

> after I restart it tonight.


I bet it's I/O bound until a good chunk of the active data gets cached. Run a vmstat 1 while it's that busy, I bet most of the cpu time is really in io_wait.


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