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From: Dave Cramer <pg@fastcrypt.com>
To: Merlin Moncure <mmoncure@gmail.com>
Cc: Tarhon-Onu Victor <mituc@iasi.rdsnet.ro>
Cc: pgsql-performance@postgresql.org
Subject: Re: 500 requests per second
Date: Mon, 21 May 2007 20:52:43 -0400
Message-ID: <BA544273-5925-40E7-A8CB-ABBC462BF7E9@fastcrypt.com> (raw)
In-Reply-To: <b42b73150705211250w61f9737ele7c498d8e1517ed3@mail.gmail.com>
References: <Pine.LNX.4.64.0705120936580.29679@oynpxoyhr.vnfv.npgvirzrqvngrpu.pbz>
	<b42b73150705211250w61f9737ele7c498d8e1517ed3@mail.gmail.com>

> * set reasonable statement timeout
> * backup with pitr.  pg_dump is a headache on extremely busy servers.

Where do you put your pitr wal logs so that they don't take up extra  
I/O ?
> * get good i/o system for your box.  start with 6 disk raid 10 and go
> from there.
> * spend some time reading about bgwriter settings, commit_delay, etc.
> * keep an eye out for postgresql hot (hopefully coming with 8.3) and
> make allowances for it in your design if possible.
> * normalize your database and think of vacuum as dangerous enemy.
>
> good luck! :-)
>
> merlin
>
> ---------------------------(end of  
> broadcast)---------------------------
> TIP 9: In versions below 8.0, the planner will ignore your desire to
>       choose an index scan if your joining column's datatypes do not
>       match




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