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Re: PSA: If you are running Precise/12.04 upgrade your kernel. - Mailing list pgsql-general

From Scott Marlowe
Subject Re: PSA: If you are running Precise/12.04 upgrade your kernel.
Date
Msg-id CAOR=d=3_MgL3dw56WwapsX5Qeg_XJm-XKNc_ojQ73Ej-7qMkQQ@mail.gmail.com
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In response to PSA: If you are running Precise/12.04 upgrade your kernel.  ("Joshua D. Drake" <jd@commandprompt.com>)
Responses Re: PSA: If you are running Precise/12.04 upgrade your kernel.  ("Joshua D. Drake" <jd@commandprompt.com>)
Re: PSA: If you are running Precise/12.04 upgrade your kernel.  (Nikhil G Daddikar <ngd@celoxis.com>)
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On Thu, Jun 6, 2013 at 4:35 PM, Joshua D. Drake <jd@commandprompt.com> wrote:
>
> Hello,
>
> I had the distinct displeasure of staying up entirely too late with a
> customer this week because they upgraded to 12.04 and immediately
> experienced a huge performance regression. In the process they also upgraded
> to PostgreSQL 9.1 from 8.4. There were a lot of knobs to change/fix/modify
> because of this. However, nothing I did fixed the problem. Until... I
> upgraded the kernel.
>
> Upgrading from 3.2Precise to the 3.9.4 kernel produced the following
> results:

I've since heard that 3.4 also fixes this issue as well.

What are you using for your IO on these boxes?

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