Re: checkpointer continuous flushing - V16 - Mailing list pgsql-hackers

From Patric Bechtel
Subject Re: checkpointer continuous flushing - V16
Date
Msg-id 56C75B80.3080505@gmail.com
Whole thread Raw
In response to Re: checkpointer continuous flushing - V16  (Fabien COELHO <coelho@cri.ensmp.fr>)
Responses Re: checkpointer continuous flushing - V16
List 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.


https://medium.com/postgresql-talk/benchmarking-postgresql-with-different-linux-kernel-versions-on-ubuntu-lts-e61d57b70dd4#.6dx44vipu

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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