| From: | Yeb Havinga <yebhavinga(at)gmail(dot)com> |
|---|---|
| To: | Florian Weimer <fweimer(at)bfk(dot)de> |
| Cc: | Andy <angelflow(at)yahoo(dot)com>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: BBU still needed with SSD? |
| Date: | 2011-07-19 11:25:36 |
| Message-ID: | 4E2569B0.2050307@gmail.com |
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| Lists: | pgsql-performance |
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
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