Re: Upgrade postgresql from 9.1 to 9.6

On Tue, Jul 24, 2018 at 10:36:34AM +0530, Sohel Tamboli wrote:
> Hi Ron, 
>
> Thanks!! 
> I tried to grep all the process owned by postgres as well, but got same
> results.  No other process are active other than two threads of pg_upgrade. 

pg_upgrade can only parallelize a few things --- from the docs:

The <option>--jobs</option> option allows multiple CPU cores
to be used for copying/linking of files and to dump and reload
database schemas in parallel;

My guess is that there were not more than two things that could be
parallelized.

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>
> Thanks, 
> Sohel
>
> On 23-Jul-2018 10:53 pm, "Ron" <ronljohnsonjr(at)gmail(dot)com> wrote:
>
> I'd grep for all processes owned by postgres, since the pg_upgrade
> processes probably spawn children.
>
>
> On 07/23/2018 12:14 PM, Sohel Tamboli wrote:
>
> Hi,
>
> I am trying to upgrade my postgresql database from version 9.1 to 9.6
> using pg_upgrade utility.
> I have started this activity with 6 threads and running with no issues
> but I can see only 2 active threads of pg_upgrade  when checked on OS
> using "ps -ef| grep pg_upgrade" which might slow down my upgrade
> process.
> Is there any limit of adding jobs in "-j" parameter in pg_upgrade
> utility?
> Or is there any settings that I need to configure in postgresql.conf
> file?
>
> Below are the configuration of my server:
> OS : Amazon Linux
> RAM: 64GB
> CPU: 16
> DB size : 5 TB
> Upgrade utility : pg_upgrade
> Jobs: 6
> Issue : only 2 threads of pg_upgrade are active
>
> Appreciate your help!!
>
> Thanks,
> Sohel
>
>
> --
> Angular momentum makes the world go 'round.
>
>
>

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