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Re: Intel 320 SSD info

From: David Boreham <david_list(at)boreham(dot)org>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: Intel 320 SSD info
Date: 2011-08-24 17:42:14
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-performance
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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Subject: Re: Intel 320 SSD info
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