From: Yeb Havinga <yebhavinga@gmail.com>
To: Florian Weimer <fweimer@bfk.de>
Cc: Andy <angelflow@yahoo.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: BBU still needed with SSD?
Date: Tue, 19 Jul 2011 13:25:36 +0200
Message-ID: <4E2569B0.2050307@gmail.com> (raw)
In-Reply-To: <82y5zubl90.fsf@mid.bfk.de>
References: <1310953399.25726.YahooMailClassic@web111304.mail.gq1.yahoo.com>
<4E23E72B.2070508@gmail.com>
<82vcuyd7p5.fsf@mid.bfk.de>
<4E255DF9.20005@gmail.com>
<82y5zubl90.fsf@mid.bfk.de>
On 2011-07-19 12:47, Florian Weimer wrote:
>
>> It would be interesting to see if the drives also show total xyz
>> written, and if that differs a lot too.
> Do you know how to check that with smartctl?
smartctl -a /dev/<your disk> should show all values. If it shows
something that looks like garbage, it means that the database of
smartmontools doesn't have the correct information yet for these new
drives. I know that for the recently new OCZ vertex 2 and 3 SSDs you
need at least 5.40 or 5.41 and that's pretty new stuff. (I just happened
to install Fedora 15 today and that has smartmontools 5.41, whereas e.g.
Scientific Linux 6 has 5.39).
--
Yeb Havinga
http://www.mgrid.net/
Mastering Medical Data
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: yebhavinga@gmail.com, fweimer@bfk.de, angelflow@yahoo.com
Subject: Re: BBU still needed with SSD?
In-Reply-To: <4E2569B0.2050307@gmail.com>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox