| From: | Patric Bechtel <patric(dot)bechtel(at)gmail(dot)com> |
|---|---|
| To: | PostgreSQL Developers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: checkpointer continuous flushing - V16 |
| Date: | 2016-02-19 18:14:24 |
| Message-ID: | 56C75B80.3080505@gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
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| Lists: | pgsql-hackers |
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Hi Fabien,
Fabien COELHO schrieb am 19.02.2016 um 16:04:
>
>>> [...] Ubuntu 12.04 LTS (precise)
>>
>> That's with 12.04's standard kernel?
>
> Yes.
Kernel 3.2 is extremely bad for Postgresql, as the vm seems to amplify IO somehow. The difference
to 3.13 (the latest LTS kernel for 12.04) is huge.
You might consider upgrading your kernel to 3.13 LTS. It's quite easy normally:
https://wiki.ubuntu.com/Kernel/LTSEnablementStack
/Patric
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