2009/9/3 Scott Otis <scott.otis@intand.com>:
> Sorry about not responding to the whole list earlier - this is my first time posting to a mailing list.
>
> Would providing more information about the size and complexities of the databases help?
>
> I measure I/O stats with iostat - here is the command I use:
>
> iostat -d -x mfid0 -t 290 2
Simply do "iostat mfid0 1" and post 10 lines of its output.
> When using 'top -m io' the postgres stats collector process is constantly at 99% - 100%.
In itself it doesn't mean much. The number of IOs is important.
> I don't think my setup is necessarily slow. I just want to make it as efficient as possible and wanted to get some
feedbackto see if am setting things up right. I am also looking out into the future and seeing how much load I can put
onthis server before getting another one. If I can reduce the I/O and CPU that the stats collector and autovacuum are
usingwithout losing any functionality then I can put more load on the server.
In general it's tricky to optimize for unknown targets - if your
performance is OK right now, you should leave it alone.
On the other hand, your diagnosis of stats collector doing 46 MB/s
points to something very abnormal. You should probably post your
entire postgresql.conf.
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