From: Lutz Steinborn <l.steinborn@4c-ag.de>
To: pgsql-performance@postgresql.org
Subject: Re: How to achieve sustained disk performance of 1.25 GB write for 5 mins
Date: Wed, 17 Nov 2010 16:49:51 +0100
Message-ID: <20101117164951.8f7692c2.l.steinborn@4c-ag.de> (raw)
In-Reply-To: <ic0onf$3fi$1@news.hub.org>
References: <ic0onf$3fi$1@news.hub.org>
On Wed, 17 Nov 2010 09:26:56 -0500
Eric Comeau <ecomeau@signiant.com> wrote:
> This is not directly a PostgreSQL performance question but I'm hoping
> some of the chaps that build high IO PostgreSQL servers on here can help.
>
> We build file transfer acceleration s/w (and use PostgreSQL as our
> database) but we need to build a test server that can handle a sustained
> write throughput of 1,25 GB for 5 mins.
>
> Why this number, because we want to push a 10 Gbps network link for 5-8
> mins, 10Gbps = 1.25 GB write, and would like to drive it for 5-8 mins
> which would be 400-500 GB.
>
> Note this is just a "test" server therefore it does not need fault
> tolerance.
Get a machine with enough RAM and run postgresql from RAM disk. Write a
start script to copy the RAM disk back to normal disk then stopping and back
to RAM disk for start.
this must be the fastest solution.
--
Lutz
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To: pgsql-performance@postgresql.org
Cc: l.steinborn@4c-ag.de
Subject: Re: How to achieve sustained disk performance of 1.25 GB write for 5 mins
In-Reply-To: <20101117164951.8f7692c2.l.steinborn@4c-ag.de>
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