Re: work_mem

[MichaelDBA <MichaelDBA@xxxxxxxxxxx>]

Memory is allocated dynamically per internal work_mem buffer requests.

SASIKUMAR Devaraj wrote on 4/2/2021 8:37 AM:

Hi All

As soon as client session is established work_mem will be allocated or only when sort happens for that particular session? Please advise how the internal behavior? This will help me to configure my database memory with high connections

Regards

Sasi

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On Wed, Mar 31, 2021 at 8:52 PM, Holger Jakobs

<holger@xxxxxxxxxx> wrote:

You can show any or all settings with the command SHOW.

show work_mem;
show all;

How many times the amount of work_mem has been allocated currently cannot be shown this way. Any sort operation running currently allocates it. So it is not identical with the number of current queries, because queries can allocate it several times.

Am 31. März 2021 16:04:07 MESZ schrieb "Campbell, Lance" <lance@xxxxxxxxxxxx>:

PostgreSQL 12

 

Is there a query that will tell us at any given time what amount of PostgreSQL memory is being used for work_mem?  

 

Thanks,

 

LANCE CAMPBELL

 

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