Re: work_mem

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To: SASIKUMAR Devaraj <sashikumard@xxxxxxxxx>
Subject: Re: work_mem
From: "David G. Johnston" <david.g.johnston@xxxxxxxxx>
Date: Fri, 2 Apr 2021 22:44:13 -0700
Cc: "Campbell, Lance" <lance@xxxxxxxxxxxx>, Bruce Momjian <bruce@xxxxxxxxxx>, Laurenz Albe <laurenz.albe@xxxxxxxxxxx>, MichaelDBA <michaeldba@xxxxxxxxxxx>, "holger@xxxxxxxxxx" <holger@xxxxxxxxxx>, "pgsql-admin@xxxxxxxxxxxxxxxxxxxx" <pgsql-admin@xxxxxxxxxxxxxxxxxxxx>
In-reply-to: <230367927.2421710.1617427436762@mail.yahoo.com>
References: <A2AA6D08-9506-4B41-9738-4D5FF8E2E011@illinois.edu> <04D84259-1B75-4648-949F-78677916194E@jakobs.com> <66290583.2329958.1617367063840@mail.yahoo.com> <c1e02a03-71cd-4071-e000-967403bcab9d@sqlexec.com> <1654783699.2333997.1617367552583@mail.yahoo.com> <592e5895-8dbd-1a4f-a87c-af72ac8eea02@sqlexec.com> <SN6PR11MB3326EADE632BA4EBE1FA28DCDE7A9@SN6PR11MB3326.namprd11.prod.outlook.com> <339e1ee870881a3efaffc7ea4cddac6bc4d009cf.camel@cybertec.at> <20210402150736.GD9270@momjian.us> <SN6PR11MB332665A6DF1226BF762A44B9DE7A9@SN6PR11MB3326.namprd11.prod.outlook.com> <20210402153436.GE9270@momjian.us> <230367927.2421710.1617427436762@mail.yahoo.com>

On Friday, April 2, 2021, SASIKUMAR Devaraj <sashikumard@xxxxxxxxx> wrote:

Case 1:
work_mem=4m
Total Sessions connected=100
Total=400M

Or Case 2
work_mem=4m
Total Sort operations at DB now=50
Total work_mem=200M

Please clarify at high level whether Case 1 is true or Case 2 is true?

Case 2

David J.

Follow-Ups:
- Re: work_mem
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References:
- work_mem
  - From: Campbell, Lance
- Re: work_mem
  - From: Holger Jakobs
- Re: work_mem
  - From: SASIKUMAR Devaraj
- Re: work_mem
  - From: MichaelDBA
- Re: work_mem
  - From: SASIKUMAR Devaraj
- Re: work_mem
  - From: MichaelDBA
- Re: work_mem
  - From: Campbell, Lance
- Re: work_mem
  - From: Laurenz Albe
- Re: work_mem
  - From: Bruce Momjian
- Re: work_mem
  - From: Campbell, Lance
- Re: work_mem
  - From: Bruce Momjian
- Re: work_mem
  - From: SASIKUMAR Devaraj

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