From: | Evgeny Shishkin <itparanoia(at)gmail(dot)com> |
---|---|
To: | Niels Kristian Schjødt <nielskristian(at)autouncle(dot)com> |
Cc: | Craig Ringer <craig(at)2ndQuadrant(dot)com>, Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org> |
Subject: | Re: Do I have a hardware or a software problem? |
Date: | 2012-12-11 17:15:59 |
Message-ID: | 67FBF3AF-5C6A-45D4-9206-7257C8C01C5E@gmail.com |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-performance |
On Dec 11, 2012, at 5:35 PM, Niels Kristian Schjødt <nielskristian(at)autouncle(dot)com> wrote:
>
> Den 11/12/2012 kl. 14.29 skrev Craig Ringer <craig(at)2ndQuadrant(dot)com>:
>
>> On 12/11/2012 06:04 PM, Niels Kristian Schjødt wrote:
>>>
>>> Maybe I should mention, that I never see more than max 5Gb out of my total 32Gb being in use on the server… Can I somehow utilize more of it?
>> For an update-mostly workload it probably won't do you tons of good so
>> long as all your indexes fit in RAM. You're clearly severely
>> bottlenecked on disk I/O not RAM.
>>> The SSD's I use a are 240Gb each which will grow too small within a
>>> few months - so - how does moving the whole data dir onto four of
>>> those in a RAID5 array sound?
>>
>> Not RAID 5!
>>
>> Use a RAID10 of four or six SSDs.
>>
>> --
>> Craig Ringer http://www.2ndQuadrant.com/
>> PostgreSQL Development, 24x7 Support, Training & Services
>>
> Hehe got it - did you have a look at the SSD's I am considering building it of? http://ark.intel.com/products/66250/Intel-SSD-520-Series-240GB-2_5in-SATA-6Gbs-25nm-MLC
> Are they suitable do you think?
>
I am not Craig, but i use them in production in raid10 array now.
>
>
> --
> Sent via pgsql-performance mailing list (pgsql-performance(at)postgresql(dot)org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-performance
From | Date | Subject | |
---|---|---|---|
Next Message | Jeff Janes | 2012-12-11 17:25:21 | Re: Do I have a hardware or a software problem? |
Previous Message | Niels Kristian Schjødt | 2012-12-11 13:35:09 | Re: Do I have a hardware or a software problem? |