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 1kmvz4-0001vs-6D for pgsql-hackers@arkaria.postgresql.org; Wed, 09 Dec 2020 09:42:06 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1kmvz3-0000gA-60 for pgsql-hackers@arkaria.postgresql.org; Wed, 09 Dec 2020 09:42:05 +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 1kmvz2-0000g2-S4 for pgsql-hackers@lists.postgresql.org; Wed, 09 Dec 2020 09:42:04 +0000 Received: from mail-ej1-x630.google.com ([2a00:1450:4864:20::630]) by makus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.92) (envelope-from ) id 1kmvyw-0000M6-6U for pgsql-hackers@postgresql.org; Wed, 09 Dec 2020 09:42:03 +0000 Received: by mail-ej1-x630.google.com with SMTP id jx16so1135234ejb.10 for ; Wed, 09 Dec 2020 01:41:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cybertec-at.20150623.gappssmtp.com; s=20150623; h=message-id:subject:from:to:cc:date:in-reply-to:references :user-agent:mime-version:content-transfer-encoding; bh=EXggU8Bak1FuV3MRXUp4fx1DWZrMzj8KqUMUYh9oduY=; b=avAJUveV5HkV6klmpZAbDtEv8NL46xvvsav7ju8RaMw1VU85BjbHeDFnLACc93t7W4 2VISnzDj/YYyfN/Qy5H+TU2GTxh2uFsBBl/TXVnxH395wWcAQDyYXSQ740OkOaiv7FC9 7AXYkUPIXX/ZKRHE0xWZHo4axprzkdrZvMVjZFiIsdDRN8uOzq0ekD6vJul8vyb8Fcel PTFtG2QuluExFTuAGdqxvepTJ5+Bz3LsxNczTsyENuN0uFeR7hQPwXeqQ6R+5irSDHmB xdKLFhLgjlmG5mw6+0MndkULu8vQGa8znxJjDsp0dIRc2Is57q31iLVNgqae2+yRcRoY 6oLw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:subject:from:to:cc:date:in-reply-to :references:user-agent:mime-version:content-transfer-encoding; bh=EXggU8Bak1FuV3MRXUp4fx1DWZrMzj8KqUMUYh9oduY=; b=m+L8cxo4Wct3rzLp/OZW1q5lyJhvhnxzlFKGGsVI0PNUFSswKwbtpZiSkAx1D3PGsr C2Q4dfvzc136P+zZ6HaZyQKNhFEwTIVyeXLpAD+vkd4sKg4uG0MEKfFckGoJep22O7zY 1e6tIqf5sQhtg0a5I4Z1N/1ixHFeHeFbLEunx4pw1s2pnq/KYXTgnSKa9wVBmociv97j 7fOo7REWHrwqUJlxUoWHMT5mn3GKkVvHja+QvmBfAfPygcKYwWSfsJY7UyiRiCipx/Sp uhe2+mAX9R8+uHoJ0Pwsko8+F8y3EpBwxKXWth7bEDO/SdFETcHkwUYAzWzca6jXb0ao hO+A== X-Gm-Message-State: AOAM531CIt0EzwtNhZ6KfPol1PjEotrJiA+BTQ9Y7gBiF7COEWsvTxpA qV6QWXbaU+/TbtV+dZc9FHPzXA== X-Google-Smtp-Source: ABdhPJwwpi5ArpjsPRdG9X7/n6839Yw7Sd/FzoMyJcr9ld3eKLUmU4O6Q+B52vOX5PHOeIn7sbT9HA== X-Received: by 2002:a17:906:ce51:: with SMTP id se17mr1312608ejb.314.1607506916201; Wed, 09 Dec 2020 01:41:56 -0800 (PST) Received: from localhost.localdomain (217-149-171-44.nat.highway.telekom.at. [217.149.171.44]) by smtp.gmail.com with ESMTPSA id n7sm1056971edb.34.2020.12.09.01.41.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Dec 2020 01:41:55 -0800 (PST) Message-ID: Subject: Re: Change default of checkpoint_completion_target From: Laurenz Albe To: "Bossart, Nathan" , Stephen Frost , Peter Eisentraut Cc: Michael Paquier , Alvaro Herrera , Bernd Helmle , "tsunakawa.takay@fujitsu.com" , "pgsql-hackers@postgresql.org" Date: Wed, 09 Dec 2020 10:41:54 +0100 In-Reply-To: <7CFCC359-5786-40DB-90A8-BDB0F08F2ABC@amazon.com> References: <20201207175329.GM16415@tamriel.snowman.net> <5285eb02-3340-7728-9f62-1a4365eda850@enterprisedb.com> <20201207191742.GN16415@tamriel.snowman.net> <7CFCC359-5786-40DB-90A8-BDB0F08F2ABC@amazon.com> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.36.5 (3.36.5-1.fc32) MIME-Version: 1.0 Content-Transfer-Encoding: 7bit List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk On Tue, 2020-12-08 at 17:29 +0000, Bossart, Nathan wrote: > +1 to setting checkpoint_completion_target to 0.9 by default. +1 for changing the default or getting rid of it, as Tom suggested. While we are at it, could we change the default of "log_lock_waits" to "on"? Yours, Laurenz Albe