From: fkater@googlemail.com <fkater@googlemail.com>
To: Pierre Frédéric Caillaud <lists@peufeu.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Inserting 8MB bytea: just 25% of disk perf used?
Date: Thu, 14 Jan 2010 22:28:07 +0100
Message-ID: <20100114212807.GF2384@comppasch2> (raw)
In-Reply-To: <op.u6i5s9eicke6l8@soyouz>
References: <20100114142903.GB2973@comppasch2>
<op.u6i5s9eicke6l8@soyouz>
Pierre Frédéric Caillaud:
> > 4 Core CPU 3 Ghz, WinXP, 1 TB SATA disk.
>
> Big CPU and slow disk...
>
> You should add another disk just for the WAL -- disks are pretty cheap
> these days.
> Writing the WAL on a second disk is the first thing to do on a
> configuration like yours, if you are limited by writes.
> It also reduces the fsync lag a lot since the disk is only doing WAL.
Good idea -- where can I set the path to WAL?
Felix
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To: pgsql-performance@postgresql.org
Cc: fkater@googlemail.com, lists@peufeu.com
Subject: Re: Inserting 8MB bytea: just 25% of disk perf used?
In-Reply-To: <20100114212807.GF2384@comppasch2>
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