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 1w28w5-0001lB-1h for pgsql-hackers@arkaria.postgresql.org; Mon, 16 Mar 2026 14:28:50 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.96) (envelope-from ) id 1w28w3-00AUDm-1a for pgsql-hackers@arkaria.postgresql.org; Mon, 16 Mar 2026 14:28:48 +0000 Received: from makus.postgresql.org ([2001:4800:3e1:1::229]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1w28w3-00AUDe-0C for pgsql-hackers@lists.postgresql.org; Mon, 16 Mar 2026 14:28:47 +0000 Received: from forwardcorp1b.mail.yandex.net ([178.154.239.136]) by makus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1w28vx-000000001ZN-30dd for pgsql-hackers@postgresql.org; Mon, 16 Mar 2026 14:28:46 +0000 Received: from mail-nwsmtp-smtp-corp-main-34.sas.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-34.sas.yp-c.yandex.net [IPv6:2a02:6b8:c24:fa2:0:640:41ee:0]) by forwardcorp1b.mail.yandex.net (Yandex) with ESMTPS id 0621E80936; Mon, 16 Mar 2026 17:28:39 +0300 (MSK) Received: from smtpclient.apple (172.31.120.29-vpn.dhcp.yndx.net [172.31.120.29]) by mail-nwsmtp-smtp-corp-main-34.sas.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id aSMijc1A3a60-ZCPFEKtm; Mon, 16 Mar 2026 17:28:38 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1773671318; bh=f39alW4A0SQdPFjRJeh7tedk/WSsUVOkboA6KdaoqFo=; h=Message-Id:To:Date:References:Cc:In-Reply-To:From:Subject; b=phsrf0dE4kCTEWpFTK/QqJMbrf4ItSnGY9sI0SauasBVdpUK3ViAG61zEioBXYuEd Z92Fhv9SWcWQ+CYhLToXWNfmv7szfmhydKpapsiTdf9IutbxpYdeVdRU3NmbnwxcYA 7nFD3FSrvVhyk91Nzh3Se5X8+dmdjbHVbLVTYDDg= Authentication-Results: mail-nwsmtp-smtp-corp-main-34.sas.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3864.400.21\)) Subject: Re: Vacuum statistics From: Andrey Borodin In-Reply-To: <877b2c60-6681-4471-ba72-86153f0b9286@yandex.ru> Date: Mon, 16 Mar 2026 19:27:58 +0500 Cc: Andrei Lepikhov , pgsql-hackers , Alexander Korotkov , Amit Kapila , Jim Nasby , Bertrand Drouvot , Kirill Reshke , Andrei Zubkov , Masahiko Sawada , Melanie Plageman , jian he , Sami Imseih , vignesh C , Ilia Evdokimov Content-Transfer-Encoding: quoted-printable Message-Id: References: <86f76aa5-1ab5-4e2e-9b15-405051852a2a@postgrespro.ru> <18169b68-5b10-40fd-9657-be04f2bd0161@postgrespro.ru> <612819ad-beca-41fb-bb7f-d5a7c11f0045@yandex.ru> <277ce149-4333-463d-bad6-ccd785606c7f@yandex.ru> <3f9c57bc-dc1f-4ad8-a2e1-5be15ac79264@yandex.ru> <77f1b8bc-b365-4e88-b87b-ced37fabbbf0@yandex.ru> <7a74d6af-85e2-4b48-9133-61309a965954@yandex.ru> <1885f257-46cc-4b90-8d90-41833eb62ea9@gmail.com> <0e84acdc-ba65-44fa-be1f-4d6a86bca2ac@yandex.ru> <8bd78e04-6efa-4fcf-b157-8ac3b92375c8@yandex.ru> <10BE6E39-94D2-4909-ACB8-24E1FA6580EE@yandex-team.ru> <877b2c60-6681-4471-ba72-86153f0b9286@yandex.ru> To: Alena Rybakina X-Mailer: Apple Mail (2.3864.400.21) List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk > On 16 Mar 2026, at 17:11, Alena Rybakina = wrote: >=20 > I moved the tests there. Regression tests are unfortunately not an = option because the statistics are not stable. I think there's no need to test for correct numbers. It would be totally = enough to just for sane numbers or even any numbers at all. If the test just invokes the function without segfaulting - that's = already by far better than no test at all. Of course, test that verifies expected behavior is better, if it's = possible. Best regards, Andrey Borodin.=