Re: Filesystem benchmarking for pg 8.3.3 server

From: david(at)lang(dot)hm
To: Ron Mayer <rm_pg(at)cheapcomplexdevices(dot)com>
Cc: Scott Carey <scott(at)richrelevance(dot)com>, Greg Smith <gsmith(at)gregsmith(dot)com>, Henrik <henke(at)mac(dot)se>, pgsql-performance(at)postgresql(dot)org
Subject: Re: Filesystem benchmarking for pg 8.3.3 server
Date: 2008-08-13 01:33:08
Message-ID: alpine.DEB.1.10.0808121831570.10264@asgard.lang.hm
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On Tue, 12 Aug 2008, Ron Mayer wrote:

> Scott Carey wrote:
>> Some SATA drives were known to not flush their cache when told to.
>
> Can you name one? The ATA commands seem pretty clear on the matter,
> and ISTM most of the reports of these issues came from before
> Linux had write-barrier support.

I can't name one, but I've seen it mentioned in the discussions on
linux-kernel several times by the folks who are writing the write-barrier
support.

David Lang

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