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 1lZJsr-0001WK-DN for pgsql-hackers@arkaria.postgresql.org; Wed, 21 Apr 2021 20:55:41 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1lZJsp-0003gm-UY for pgsql-hackers@arkaria.postgresql.org; Wed, 21 Apr 2021 20:55:39 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lZJsp-0003ge-Nn for pgsql-hackers@lists.postgresql.org; Wed, 21 Apr 2021 20:55:39 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by magus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lZJsn-0002Gd-Jo for pgsql-hackers@postgresql.org; Wed, 21 Apr 2021 20:55:39 +0000 Received: from sss1.sss.pgh.pa.us (localhost [127.0.0.1]) by sss.pgh.pa.us (8.15.2/8.15.2) with ESMTP id 13LKtSYv801261; Wed, 21 Apr 2021 16:55:28 -0400 From: Tom Lane To: Stephen Frost cc: Andres Freund , Magnus Hagander , Jehan-Guillaume de Rorthais , Robert Haas , Thomas Munro , "pgsql-hackers@postgresql.org" Subject: Re: when the startup process doesn't In-reply-to: <20210421202826.GS20766@tamriel.snowman.net> References: <20210420171720.56599607@firost> <631849.1618942988@sss.pgh.pa.us> <20210420185150.GL20766@tamriel.snowman.net> <633337.1618945018@sss.pgh.pa.us> <20210420203642.nvxvolm37f2k6prj@alap3.anarazel.de> <20210421183624.GP20766@tamriel.snowman.net> <20210421193605.cubavrq7q5bqkf4i@alap3.anarazel.de> <20210421195138.GQ20766@tamriel.snowman.net> <20210421200032.ojzbrbdhrqw7nroa@alap3.anarazel.de> <20210421202826.GS20766@tamriel.snowman.net> Comments: In-reply-to Stephen Frost message dated "Wed, 21 Apr 2021 16:28:26 -0400" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <801259.1619038528.1@sss.pgh.pa.us> Date: Wed, 21 Apr 2021 16:55:28 -0400 Message-ID: <801260.1619038528@sss.pgh.pa.us> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk Stephen Frost writes: > * Andres Freund (andres@anarazel.de) wrote: >> What do you mean by that? That the overhead of writing it out more >> frequently wouldn't be too bad? Or that we shouldn't "unnecessarily" add >> more fields to it? > Mostly just that the added overhead in writing it out more frequently > wouldn't be too bad. My concern about it was not at all about performance, but that every time you write it is a new opportunity for the filesystem to lose or corrupt the data. regards, tom lane