From: David Boreham <david_list@boreham.org>
To: pgsql-performance@postgresql.org
Subject: Re: Intel 320 SSD info
Date: Wed, 24 Aug 2011 11:42:14 -0600
Message-ID: <4E5537F6.3070105@boreham.org> (raw)
In-Reply-To: <4E5537C9.9080308@2ndQuadrant.com>
References: <4E552DCF.80802@boreham.org>
<1314206629.63488.YahooMailNeo@web111301.mail.gq1.yahoo.com>
<4E5537C9.9080308@2ndQuadrant.com>
On 8/24/2011 11:41 AM, Greg Smith wrote:
>
>
> I've measured the performance of this drive from a couple of
> directions now, and it always comes out the same. For PostgreSQL,
> reading or writing 8K blocks, I'm seeing completely random workloads
> hit a worst-case of 20MB/s; that's just over 2500 IOPS. It's quite
> possible that number can go lower under pressure of things like
> internal drive garbage collection however, which I believe is going
> into the 600 IOPS figure. I haven't tried to force that yet--drive is
> too useful to me to try and burn it out doing tests like that at the
> moment.
I hope someone from Intel is reading -- it would be well worth their
while to just send you a few drives,
since you are set up to perform the right test, and can provide
impartial results.
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To: pgsql-performance@postgresql.org
Cc: david_list@boreham.org
Subject: Re: Intel 320 SSD info
In-Reply-To: <4E5537F6.3070105@boreham.org>
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