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 1ktBDz-0005oB-3Y for pgsql-hackers@arkaria.postgresql.org; Sat, 26 Dec 2020 15:11:19 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1ktBDu-0005ay-OJ for pgsql-hackers@arkaria.postgresql.org; Sat, 26 Dec 2020 15:11:14 +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 1ktBDu-0005ar-96 for pgsql-hackers@lists.postgresql.org; Sat, 26 Dec 2020 15:11:14 +0000 Received: from mail-ed1-x534.google.com ([2a00:1450:4864:20::534]) by makus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.92) (envelope-from ) id 1ktBDm-00085o-28 for pgsql-hackers@postgresql.org; Sat, 26 Dec 2020 15:11:13 +0000 Received: by mail-ed1-x534.google.com with SMTP id b73so5987738edf.13 for ; Sat, 26 Dec 2020 07:11:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=enterprisedb-com.20150623.gappssmtp.com; s=20150623; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=cxlYDfQ2eY4psEf59RPD9tzVvCbXGdrHb4MkV+vBrCU=; b=ecsxTdtCZ0FGPbqFAyjgUWk3x/Dq1bdqu+dLknxPi8e94POvmpOgQhqd/n0tDYaMIt cGp/iV2ERljUSkCrEJseH8jIf85PvKfN7CHNdd4rmaKdVYHUx1CWcOuOoiXgQgyig4KR gvZe3baKafQ5pvTz1js5pDoFrQCo3VCoVgTiKIA5tvvJL2KGy/okLFzycYb1jbaPwJaN +JIZGAopnofpq+nYCoIl58Ti4XivwSheW4p0w6t6KdH2797wNFfQEJ0Qg+RXhkF1tEls y7jpV8N9+3MZnm65aUGZE5+qfGoToQVf60anErqHrecuHIJ/+IzR7TBw9IsCBoy8JuMW WrAw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=cxlYDfQ2eY4psEf59RPD9tzVvCbXGdrHb4MkV+vBrCU=; b=jguh/3GHFiS06xigLlX+TdpfgTBJectHjp2VvItvzC9rr8Pv+qhac8rSkkqT3unRkT FwoZ2BzFMElQx7hDhM/48/UAwpF9O0dnA7Q9dvtvH7ovxtur1EAVcz4+o+n/pTSm1tok WYl5k9pfH9+C0D9EKKQt/CDYM2IkMQl0cIPNWaozVNidSzMoS6kpXCB//8fOsqqeLB9z 0KQhPcEbyrwKvVa0Brz763+bnd4zalIehMhg+ov1o8W/etf/6V/x7eVsXxH5j0ASbX0M dKpzSmZttrzhInNJypBkZNVVgkiz0ieq72b/DM/mVCQTnOKoKtwahRRTlLnpsfe6dJQb H+kg== X-Gm-Message-State: AOAM533LMRwdzDRzzoLZBIA9Bzv7qp3vwu8nQcQAx+urDM9hU9TtSD8I id5yUH/kJAbcFU+srcVAZI4duoyVy2UJ16wEWAC4zInrvEEpQKYaBZfTUUUZ6nMPLPg+jdxwfBl 1JtpGHU5LTWfWYZtV3VIWtHlqBmvXVNEDYDvmNklXDena8QGtAMRm8dpnBNUMTpTGyiHdNETIQO NyhKR4H2Zzr7zLZfnh0O67pqN14j8Ce8WXYL0P1RHG2lNoTUBStWMTcFpu3sI8RFquqK+JFFsdp bZUVdVg3vydRg07eHIkjA+GbuLicZgrUCfApmb5 X-Google-Smtp-Source: ABdhPJyBqb/isLT9d69GithyRk5fLUhaskRPNLcGJqP4Q8LWAEwaYOgD7IJ1nde15WwcySWypfdBTA== X-Received: by 2002:a50:ed17:: with SMTP id j23mr35573829eds.218.1608995463471; Sat, 26 Dec 2020 07:11:03 -0800 (PST) Received: from [10.137.0.19] (ip-86-49-249-71.net.upcbroadband.cz. [86.49.249.71]) by smtp.gmail.com with ESMTPSA id cb14sm15238852ejb.105.2020.12.26.07.11.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 26 Dec 2020 07:11:02 -0800 (PST) Subject: Re: pglz compression performance, take two To: Andrey Borodin , pgsql-hackers References: <25991595-1848-4178-AA57-872B10309DA2@yandex-team.ru> From: Tomas Vondra Message-ID: <18a39267-341b-0424-2b05-9a0f54e55a9d@enterprisedb.com> Date: Sat, 26 Dec 2020 16:10:20 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.5.0 MIME-Version: 1.0 In-Reply-To: <25991595-1848-4178-AA57-872B10309DA2@yandex-team.ru> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-CLOUD-SEC-AV-Info: enterprisedb,google_mail,monitor X-CLOUD-SEC-AV-Sent: true X-Gm-Spam: 0 X-Gm-Phishy: 0 List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk On 12/26/20 8:06 AM, Andrey Borodin wrote: > > >> 12 дек. 2020 г., в 22:47, Andrey Borodin написал(а): >> >> > > I've cleaned up comments, checked that memory alignment stuff actually make sense for 32-bit ARM (according to Godbolt) and did some more code cleanup. PFA v2 patch. > > I'm still in doubt should I register this patch on CF or not. I'm willing to work on this, but it's not clear will it hit PGv14. And I hope for PGv15 we will have lz4 or something better for WAL compression. > I'd suggest registering it, otherwise people are much less likely to give you feedback. I don't see why it couldn't land in PG14. regards -- Tomas Vondra EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company