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 1oQ6yE-0000J1-9Z for pgsql-admin@arkaria.postgresql.org; Mon, 22 Aug 2022 12:55:58 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1oQ6yC-0003jQ-VG for pgsql-admin@arkaria.postgresql.org; Mon, 22 Aug 2022 12:55:56 +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 1oQ6yC-0003jG-IR for pgsql-admin@lists.postgresql.org; Mon, 22 Aug 2022 12:55:56 +0000 Received: from mail-qv1-xf2a.google.com ([2607:f8b0:4864:20::f2a]) by makus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.92) (envelope-from ) id 1oQ6y9-0002Qm-LX for pgsql-admin@lists.postgresql.org; Mon, 22 Aug 2022 12:55:55 +0000 Received: by mail-qv1-xf2a.google.com with SMTP id p5so6462272qvz.6 for ; Mon, 22 Aug 2022 05:55:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=in-reply-to:references:to:from:content-language:subject:user-agent :mime-version:date:message-id:from:to:cc; bh=7ZXzFDGY6sOqe8nPgrlC8BMXRzdx707bi17tcEjx7sg=; b=S2ZKPtm12gURBjGdD+f24/CxmsmjH4CPzvDBpl2Wxjb7JrfmZRsW9DthIbsd2+lOpP UzWE/WZCvawDFbLwVWPrsP3m5Kb9MZ3E11w0jeiW+3NEqHDM23Wl++ekRTpQpD6o8211 VLAnowU73vdt0kjKj2J3M1u+7dhGNk5bSsXHhwc3YQ2Am56siyAJ3LwO7Sn/wwEOVWjX ZKobHQ1HE5lVy+xJF0TErAvCxt2BhntZzhyLwdJekPV0xQ/jxpFHVno865lRg3+MtARM 7eTHmI7fqSM2fxs3wuDxeix2qVK2NM/9hvzRRLaKatGaOQkJG/1XuPHSoIGKTmbnY2Q6 a9YQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:references:to:from:content-language:subject:user-agent :mime-version:date:message-id:x-gm-message-state:from:to:cc; bh=7ZXzFDGY6sOqe8nPgrlC8BMXRzdx707bi17tcEjx7sg=; b=opdDXfcFJDv69CdDd/Sus+4aDHiKoysRwl/4byeICWoJqXTZH6AKxFL8lKwAZH5VXY Aq5zuQE0tDQfSvU/z0yaqEhjxdbclI7Sj6SS21BpNCcSV4x6LrZicdq3IIihqq2UA75n DPiz/LJoj+lYeWo3UrpWL1lM9yaTjPqfQg3clLx5ugrarU01mV88FDbHhbInB55Gzhyz vANBobU4c076SrCyCFqNBz6x//H6zU8nViLhVIQ6UJf68f6tlIQRxTwXZQs8KlCF+k7G Hq+TkFY0FVF9fdVPBDC0DtLmVxRShC9ZEoPLgp92xzvdKpwpnVyL+Ia1DzUMB/NCvOkL Vp8Q== X-Gm-Message-State: ACgBeo1XnA3gNohTf9HHg1KJOFFrxM8TmvwgcWsGkgsJnW5sV/X2dPun 42oPjeCJdKdrNNWuKA1Ae2FLqcOmZ0YmXDb0 X-Google-Smtp-Source: AA6agR4zQ/96nu9pvgxkxm2QQiIpietj/gkTd+d4FpHLb49uJfskIvLGX3rOlFPHoOJEkBCwJaeHAg== X-Received: by 2002:a05:6214:d89:b0:48f:7dcf:2914 with SMTP id e9-20020a0562140d8900b0048f7dcf2914mr15520651qve.52.1661172952465; Mon, 22 Aug 2022 05:55:52 -0700 (PDT) Received: from [192.168.2.100] (pool-72-79-30-4.nwrknj.east.verizon.net. [72.79.30.4]) by smtp.gmail.com with ESMTPSA id i10-20020a05620a404a00b006b58d8f6181sm10638007qko.72.2022.08.22.05.55.51 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 22 Aug 2022 05:55:52 -0700 (PDT) Content-Type: multipart/alternative; boundary="------------cQFWNzoTm0BS54ad1I2ZfpR9" Message-ID: Date: Mon, 22 Aug 2022 08:55:51 -0400 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.12.0 Subject: Re: Postgresql 14 performance Content-Language: en-US From: Mladen Gogala To: pgsql-admin@lists.postgresql.org References: In-Reply-To: List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk This is a multi-part message in MIME format. --------------cQFWNzoTm0BS54ad1I2ZfpR9 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 8/21/22 21:16, Mladen Gogala wrote: > > Agreed. The "perf top" output produced by Kenny definitely indicates > that. That's precisely why I concentrated on JIT. Anything else would > give us a slim chance of increasing the query speed. > When I come to think of it, are you using huge pages for shared buffers? Huge pages tend to decrease page tables and lessen the impact of paging. Regards -- Mladen Gogala Database Consultant Tel: (347) 321-1217 https://dbwhisperer.wordpress.com --------------cQFWNzoTm0BS54ad1I2ZfpR9 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 7bit
On 8/21/22 21:16, Mladen Gogala wrote:

Agreed. The "perf top" output produced by Kenny definitely indicates that. That's precisely why I concentrated on JIT. Anything else would give us a slim chance of increasing the query speed.

When I come to think of it, are you using huge pages for shared buffers? Huge pages tend to decrease page tables and lessen the impact of paging.

Regards

-- 
Mladen Gogala
Database Consultant
Tel: (347) 321-1217
https://dbwhisperer.wordpress.com
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