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 1krROL-0002cw-Ky for pgsql-hackers@arkaria.postgresql.org; Mon, 21 Dec 2020 20:02:49 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1krROJ-0002S8-V2 for pgsql-hackers@arkaria.postgresql.org; Mon, 21 Dec 2020 20:02:47 +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 1krROJ-0002S1-OH for pgsql-hackers@lists.postgresql.org; Mon, 21 Dec 2020 20:02:47 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by makus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1krROD-0007ie-I1 for pgsql-hackers@postgresql.org; Mon, 21 Dec 2020 20:02:46 +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 0BLK2e1n554921; Mon, 21 Dec 2020 15:02:40 -0500 From: Tom Lane To: Justin Pryzby cc: pgsql-hackers@postgresql.org Subject: Re: zstd compression for pg_dump In-reply-to: <20201221194924.GI30237@telsasoft.com> References: <20201221194924.GI30237@telsasoft.com> Comments: In-reply-to Justin Pryzby message dated "Mon, 21 Dec 2020 13:49:24 -0600" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <554919.1608580960.1@sss.pgh.pa.us> Date: Mon, 21 Dec 2020 15:02:40 -0500 Message-ID: <554920.1608580960@sss.pgh.pa.us> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk Justin Pryzby writes: > I found that our largest tables are 40% smaller and 20% faster to pipe > pg_dump -Fc -Z0 |zstd relative to native zlib The patch might be a tad smaller if you hadn't included a core file in it. regards, tom lane