Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vfubU-00602C-13 for pgsql-docs@arkaria.postgresql.org; Wed, 14 Jan 2026 06:43:40 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.96) (envelope-from ) id 1vfubT-008Kfs-0z for pgsql-docs@arkaria.postgresql.org; Wed, 14 Jan 2026 06:43:39 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vfubT-008Kfk-0C for pgsql-docs@lists.postgresql.org; Wed, 14 Jan 2026 06:43:39 +0000 Received: from smtp.outgoing.loopia.se ([93.188.3.37]) by magus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vfubQ-000NG4-2x for pgsql-docs@lists.postgresql.org; Wed, 14 Jan 2026 06:43:38 +0000 Received: from s807.loopia.se (localhost [127.0.0.1]) by s807.loopia.se (Postfix) with ESMTP id DF4C24B91BD for ; Wed, 14 Jan 2026 07:43:35 +0100 (CET) Received: from s899.loopia.se (unknown [172.22.191.6]) by s807.loopia.se (Postfix) with ESMTP id D0F724B9E12; Wed, 14 Jan 2026 07:43:35 +0100 (CET) Received: from s473.loopia.se (unknown [172.22.191.5]) by s899.loopia.se (Postfix) with ESMTP id CCD822C8BA5C; Wed, 14 Jan 2026 07:43:35 +0100 (CET) X-Virus-Scanned: amavisd-new at amavis.loopia.se X-Spam-Flag: NO X-Spam-Score: -1.2 X-Spam-Level: X-Spam-Status: No, score=-1.2 tagged_above=-999 required=6.2 tests=[ALL_TRUSTED=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1] autolearn=disabled Authentication-Results: s473.loopia.se (amavisd-new); dkim=pass (2048-bit key) header.d=proxel.se Received: from s934.loopia.se ([172.22.191.5]) by s473.loopia.se (s473.loopia.se [172.22.190.13]) (amavisd-new, port 10024) with LMTP id aSK4DMQKdaOL; Wed, 14 Jan 2026 07:43:35 +0100 (CET) X-Loopia-Auth: user X-Loopia-User: andreas@proxel.se X-Loopia-Originating-IP: 147.28.75.140 Received: from [192.168.0.121] (customer-147-28-75-140.stosn.net [147.28.75.140]) (Authenticated sender: andreas@proxel.se) by s934.loopia.se (Postfix) with ESMTPSA id 6785F7CEA84; Wed, 14 Jan 2026 07:43:35 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=proxel.se; s=loopiadkim1707418970; t=1768373015; bh=3aNwvh2P5it0PbPNTCmBhArfCIzG7OK3321riptls3Y=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=gLpC2hTAHBmzoCaKC6sk3PKwOFcq3rtCs/BUO9KNu0FYeL6jo2JS0LaHGVpwkuI3Z GLNBvCKw0+5iDpDS4+gnkBQVy1trQe+RIriCb1ZlKfC/IqEDBGlEgIJSy5sb2DGpV+ DrFI+eNojLplKzYjUwVEQdAqkWcf4kRYYVGyQNgVsBC3uVtudQDcpJ22oAtnsiqey1 gSgzoVUmNzUAui57bH4DAufVRRiJMYEP2m/xwYn1lQASF3lc5dklTf8RT+VSKCiz31 1TtLAkB3usNfdFVCR50agtmNKxBD8erjfeR8LKbeanuAYesw09eekkMWxt6Wn3r9AM HMNdEoZIFCvIA== Message-ID: <1ab3f321-23a6-4552-abed-9143ac24ccc9@proxel.se> Date: Wed, 14 Jan 2026 07:43:35 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: Parallelizing startup with many databases To: Jelte Fennema-Nio , Tom Lane Cc: pgsql-docs@lists.postgresql.org, Babak Ghadiri References: <0def7076-40b4-485a-83e7-d0dd1e31a472@proxel.se> <759404.1767484933@sss.pgh.pa.us> From: Andreas Karlsson Content-Language: en-US In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk On 1/4/26 11:15 AM, Jelte Fennema-Nio wrote: > Good points. Attached an updated patch that changes > postgresql.conf.sample and the group too. Nice, I think this makes things a lot clearer! Andreas