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 4.94.2) (envelope-from ) id 1rZhqi-005yV0-0y for pgsql-hackers@arkaria.postgresql.org; Tue, 13 Feb 2024 01:44:40 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.94.2) (envelope-from ) id 1rZhqg-00EnB8-Qb for pgsql-hackers@arkaria.postgresql.org; Tue, 13 Feb 2024 01:44:38 +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 4.94.2) (envelope-from ) id 1rZhqg-00EnAy-Gy for pgsql-hackers@lists.postgresql.org; Tue, 13 Feb 2024 01:44:38 +0000 Received: from mail-pl1-x633.google.com ([2607:f8b0:4864:20::633]) by makus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.94.2) (envelope-from ) id 1rZhqd-006Sax-Tx for pgsql-hackers@lists.postgresql.org; Tue, 13 Feb 2024 01:44:37 +0000 Received: by mail-pl1-x633.google.com with SMTP id d9443c01a7336-1d9b2400910so24724045ad.0 for ; Mon, 12 Feb 2024 17:44:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=j-davis-com.20230601.gappssmtp.com; s=20230601; t=1707788675; x=1708393475; darn=lists.postgresql.org; h=mime-version:user-agent:content-transfer-encoding:references :in-reply-to:date:cc:to:from:subject:message-id:from:to:cc:subject :date:message-id:reply-to; bh=UXH7s9OWbZPDl3A7ZHzWh2VlfNpohS61zVJvI7zmYLU=; b=l/dKZRsOHgze0Ymnm60MjQ7tOI9gc/xAs6YJpwkXuL8lZlK6hRbhzNftBqQ65M87zT MHFd+tzBzJCBTwcK08ajE+10jxZCZkpJ24JUvQFZPBRFYU3tPuJxuH2NG/rH646R4K1u faUzJM4k+ZSvXUHoGSxssw4EfLmmYxYyQB/OJgUaHGQzFxv/fw9DHk1SdX54InPt5iZ3 rEu1z5k9hCCzs5Qdm71+Ex5uN9/2lCsOV0OwG1oGlJuqCRpdnti4W5fWu3MtvNtN3uZw 010MAxakcTRkQJs5AUCoc89K2ZU2x8WFsYiM514uNlTcLkDz8NB3znrwiDaAHScS7q2r tQUw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1707788675; x=1708393475; h=mime-version:user-agent:content-transfer-encoding:references :in-reply-to:date:cc:to:from:subject:message-id:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=UXH7s9OWbZPDl3A7ZHzWh2VlfNpohS61zVJvI7zmYLU=; b=qOiNaRxrEk7F7yO4ovn9CkDb6lWGfMitVpzhf2sdd+2tv44nXQQ4/4eE+fdPxQWHqY c74z9FpDC4uYtJXmTKlJtmamrLsLErfJ+bsUALhKYrW2xSe9Ba6rOVonyyJNBVwwffHv y7tpECvK8asgsshLs9y5PrEv+Og5bPmLO6i+ubWUsaRZQX3Z7ZNKSEZRebMEdgh+h2j2 ehUs3DZ0umnhpJI86Bss18wDc8ik3Dp6KZC4cav/shjRtgkt7pij4M2MhhVgQa5jM0of a+s+6V8K2aVISDglnDBB9j6+sFunB1s+8sz3tws1L9zqG09pkmIQODOEnwBUwOVuJpAq 41gA== X-Forwarded-Encrypted: i=1; AJvYcCUKZGgdAL7+EwIIrbrVAs09pSXI58uIH3BW9gQ6XeWKJk0jdKBkIPIdE21obF4jmslenBWV8wA+oDbiNOgrN8E5KH7WTVOteGZq6fmkiGj3evXB X-Gm-Message-State: AOJu0YymgU6y2qwb4m8luC//WpnK6mqSR0niSWBtNlL/Jr4LziTJufvd KomUZpHB4sfedk9SZB0DpwV8mJ+gW9jrNNkAVefk93Oq1dQ40pnKyUNe8Zyd2w== X-Google-Smtp-Source: AGHT+IEOdoeoJCDKd4nM1pzTpfDSO+Yt06UPFQ6Fb0M6JY/jWrKhhSyx/5bpy6k/W90FM9zEh8gFlg== X-Received: by 2002:a17:902:ecc2:b0:1d9:e1aa:f217 with SMTP id a2-20020a170902ecc200b001d9e1aaf217mr1851871plh.22.1707788674894; Mon, 12 Feb 2024 17:44:34 -0800 (PST) X-Forwarded-Encrypted: i=1; AJvYcCXFwALEqDEw9iniH+MBkkr5jNi6aM5A9kyXVdgZrIVGy43JDb1p67alEebiXgkfTXs5ZCbq2RVqdA6cerffJr1BuiprGuw/mJ9eoque+Zv8pYSnzN0xCUbREuIABQVJCndNBvS8+7ywjm65xi0QsOSvmprnIuO/2jMy0LrgMTcdOIJpVw== Received: from [172.18.10.46] ([12.126.244.130]) by smtp.gmail.com with ESMTPSA id iw11-20020a170903044b00b001d995305c8bsm946563plb.290.2024.02.12.17.44.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 12 Feb 2024 17:44:34 -0800 (PST) Message-ID: Subject: Re: LogwrtResult contended spinlock From: Jeff Davis To: Alvaro Herrera , Tom Lane Cc: Andres Freund , pgsql-hackers@lists.postgresql.org, Jaime Casanova Date: Mon, 12 Feb 2024 17:44:33 -0800 In-Reply-To: <20220923084941.g3756xqz6lwnqwso@alvherre.pgsql> References: <20220923084941.g3756xqz6lwnqwso@alvherre.pgsql> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.44.4-0ubuntu2 MIME-Version: 1.0 List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk On Fri, 2022-09-23 at 10:49 +0200, Alvaro Herrera wrote: > On 2022-Jul-28, Alvaro Herrera wrote: >=20 > > v10 is just a trivial rebase.=C2=A0 No changes.=C2=A0 Moved to next > > commitfest. >=20 > I realized that because of commit e369f3708636 this change is no > longer > as critical as it used to be, so I'm withdrawing this patch from the > commitfest. It looks like there's some renewed interest in this patch: https://www.postgresql.org/message-id/20240213001150.4uqzh7tinuhvoopl@awork= 3.anarazel.de even if there's not a pressing performance conern now, it could clean up the complexity of having a non-shared copy of LogwrtResult. Regards, Jeff Davis