Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oG8JA-0000pI-46 for pgsql-admin@arkaria.postgresql.org; Tue, 26 Jul 2022 00:20:20 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1oG8J8-0000pl-NS for pgsql-admin@arkaria.postgresql.org; Tue, 26 Jul 2022 00:20:18 +0000 Received: from makus.postgresql.org ([2001:4800:3e1:1::229]) by malur.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oG8J8-0000pb-B1 for pgsql-admin@lists.postgresql.org; Tue, 26 Jul 2022 00:20:18 +0000 Received: from mail-pj1-x1032.google.com ([2607:f8b0:4864:20::1032]) by makus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.92) (envelope-from ) id 1oG8J1-0008Um-Rc for pgsql-admin@lists.postgresql.org; Tue, 26 Jul 2022 00:20:17 +0000 Received: by mail-pj1-x1032.google.com with SMTP id x24-20020a17090ab01800b001f21556cf48so15797467pjq.4 for ; Mon, 25 Jul 2022 17:20:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:from:mime-version:date:subject:message-id :to; bh=tBoTqQm9vmikBplR5CXIZc2gUqHG4imfHWd8VzZlRlg=; b=F6EsaTNH5dudUpBnM6Od4lcsj9739roKOje1+rOXqggNFT9dYr/RXhwLPP8kZxkvt2 OhJ8ABvRrT+vMxRkhbXDsbPZPntI+79K5bhjt5RbK5Ffnz1gEuVn5KOmOT6tR1yBXT0l 4UvVLaXyUHFHrcXQz/GnBl3F2M35Mn/Cb/XqCJ1wiXymuwOVJHeYwgPVPWjFGAeUMFi4 qjXrPddC/GL7f1rF77GMDL26PRykPVwxeT5Kx2oidRYtepeYYmoo9yUY3gpesE8FFv8e cyXuJPgfNxj9wJEOCC164m8kn9nJqMv2/hiHf8gFoYKl8B0loWvaddoQRSE2W2SBzBJF wCpw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:content-transfer-encoding:from:mime-version:date :subject:message-id:to; bh=tBoTqQm9vmikBplR5CXIZc2gUqHG4imfHWd8VzZlRlg=; b=cLXaagEKXJGew2ZG2n1lASQjhi7Z5iwipEUAzyGi98IX+J73YmY2gDHRLTefiT9SN6 vFolNdjrRrpjB/FW5vWdgBEZ1iWnn0OVNa59H51iF8uIsiAh6c68NqesuFt4jUJ956Vd KfRZFkLsy96IHVDHvfp1vt8FNqHDJSfPvCCtS8HTui5X8PFLeqPPdtYo0ljEc4Mhz0t5 lBHHnvdynLTPUYng7VNa1WZZnAEWLTJJ9S9OZh2ZNBRv0jDmozcUXy34/L/1jjq5q603 cNfdS7K/w1RT8JKuLZxTJAj2yiELNJ1HNGLaGiWObs4LOqyC0Ir7b5e69746fFjuiDW9 j60A== X-Gm-Message-State: AJIora9Em6fGMR+j4b8v8KkwvGjiVsqkIiIC8gY89VoLgOkx1ziJTtZk mfbaFiCg+sJDEqV7DAdcXRvF+UQ80IY= X-Google-Smtp-Source: AGRyM1sZms5B8g+KsdbNQ282lLvyM0CBl/js6DtFtQyCphMMUebDbrfK7pOwqasZ/SL+r+OYTZOC6g== X-Received: by 2002:a17:90b:3ec1:b0:1f2:286a:8c4e with SMTP id rm1-20020a17090b3ec100b001f2286a8c4emr30238837pjb.74.1658794810285; Mon, 25 Jul 2022 17:20:10 -0700 (PDT) Received: from smtpclient.apple (2603-8001-3e43-3464-1de6-16a8-ad20-3f8d.res6.spectrum.com. [2603:8001:3e43:3464:1de6:16a8:ad20:3f8d]) by smtp.gmail.com with ESMTPSA id x187-20020a6286c4000000b0052ac2e23295sm10258799pfd.44.2022.07.25.17.20.09 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 25 Jul 2022 17:20:09 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable From: Teja Jakkidi Mime-Version: 1.0 (1.0) Date: Mon, 25 Jul 2022 17:20:08 -0700 Subject: Workers in Postgres Message-Id: To: pgsql-admin X-Mailer: iPhone Mail (19G71) List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk Hello Admin team, I am new to Postgres and please excuse me if these are silly questions: 1. What is a worker process exactly in Postgres?=20 2. is max_parallel_workers specific to a session or instance. My max_paralle= l_workers is set to 8. If it is specific to instance, does it mean at any po= int of time I can only see 8 parallel processes despite the number of transa= ctions in the db?=20 3. Does number of worker process have anything to do with active connections= to the database. I have read the documentation but unable to catch up correctly. Any help fro= m you is appreciated. Thanks, J. Teja.=