Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dvoPf-0007f4-Q5 for pgsql-hackers@arkaria.postgresql.org; Sat, 23 Sep 2017 17:40:23 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.84_2) (envelope-from ) id 1dvoPf-0004b4-D3 for pgsql-hackers@arkaria.postgresql.org; Sat, 23 Sep 2017 17:40:23 +0000 Received: from makus.postgresql.org ([2001:4800:1501:1::229]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1dvoPe-0004a6-ET for pgsql-hackers@postgresql.org; Sat, 23 Sep 2017 17:40:22 +0000 Received: from smtp-fw-33001.amazon.com ([207.171.190.10]) by makus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1dvoPb-0004HG-GR for pgsql-hackers@postgresql.org; Sat, 23 Sep 2017 17:40:20 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1506188419; x=1537724419; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=3i/kwNqelBqGStZnZyuJs77tCQUF9aFqjqSejt6UneQ=; b=jeAb3l/QVG9+jUpYIi9MjGfwlP/GrQFBTQaNvPGBCJzRv6KKJ722l2bl Ru2phnW0Bet3gbnz7Q4Hek2fX0+gM7ifYx2i//35RFeEZCAuAYGMXlxUs RshupUVnmdXqQEyNh/m5C7VuZsMzlYR3WEnQRrdI6maPJppnMXC9DkkIH M=; X-IronPort-AV: E=Sophos;i="5.42,430,1500940800"; d="scan'208";a="696881017" Received: from sea3-co-svc-lb6-vlan2.sea.amazon.com (HELO email-inbound-relay-2c-579b7f5b.us-west-2.amazon.com) ([10.47.22.34]) by smtp-border-fw-out-33001.sea14.amazon.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 23 Sep 2017 17:40:16 +0000 Received: from EX13MTAUWC001.ant.amazon.com (pdx1-ws-svc-p6-lb9-vlan2.pdx.amazon.com [10.236.137.194]) by email-inbound-relay-2c-579b7f5b.us-west-2.amazon.com (8.14.7/8.14.7) with ESMTP id v8NHeEro044493 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=FAIL); Sat, 23 Sep 2017 17:40:15 GMT Received: from EX13D03UWC001.ant.amazon.com (10.43.162.136) by EX13MTAUWC001.ant.amazon.com (10.43.162.135) with Microsoft SMTP Server (TLS) id 15.0.1104.5; Sat, 23 Sep 2017 17:40:13 +0000 Received: from EX13D03UWC004.ant.amazon.com (10.43.162.49) by EX13D03UWC001.ant.amazon.com (10.43.162.136) with Microsoft SMTP Server (TLS) id 15.0.1236.3; Sat, 23 Sep 2017 17:40:12 +0000 Received: from EX13D03UWC004.ant.amazon.com ([10.43.162.49]) by EX13D03UWC004.ant.amazon.com ([10.43.162.49]) with mapi id 15.00.1236.000; Sat, 23 Sep 2017 17:40:12 +0000 From: "Bossart, Nathan" To: Tom Lane CC: Michael Paquier , Alvaro Herrera , PostgreSQL mailing lists Subject: Re: Rethinking autovacuum.c memory handling Thread-Topic: [HACKERS] Rethinking autovacuum.c memory handling Thread-Index: AQHTM+dYOq9+eMSy4UWSQbNl1eWc96LCRQKAgAAhvoCAAFZkgP//rUKA Date: Sat, 23 Sep 2017 17:40:12 +0000 Message-ID: <2E010582-FC1A-49E3-9256-F65DC9823219@amazon.com> References: <13849.1506114543@sss.pgh.pa.us> <9E08B120-31DE-4B47-9C44-305619F3195C@amazon.com> <15155.1506188183@sss.pgh.pa.us> In-Reply-To: <15155.1506188183@sss.pgh.pa.us> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.43.162.30] Content-Type: text/plain; charset="utf-8" Content-ID: <346D0FFEC47E5D4385F6312F4CCAF9F9@amazon.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-hackers Precedence: bulk Sender: pgsql-hackers-owner@postgresql.org T24gOS8yMy8xNywgMTI6MzYgUE0sICJUb20gTGFuZSIgPHRnbEBzc3MucGdo LnBhLnVzPiB3cm90ZToNCj4iQm9zc2FydCwgTmF0aGFuIiA8Ym9zc2FydG5A YW1hem9uLmNvbT4gd3JpdGVzOg0KPj4gVGhpcyBsb29rcyByZWFzb25hYmxl IHRvIG1lIGFzIHdlbGwuICBJIGhhdmVuJ3Qgbm90aWNlZCBhbnkgaXNzdWVz IGFmdGVyDQo+PiBhIGNvdXBsZSBob3VycyBvZiBwZ2JlbmNoIHdpdGggYWdn cmVzc2l2ZSBhdXRvdmFjdXVtIHNldHRpbmdzLCBlaXRoZXIuDQo+DQo+IFRo YW5rcyBmb3IgbG9va2luZy4gIEFzIEknbSBzdXJlIHlvdSByZWFsaXplLCB3 aGF0IG1vdGl2YXRlZCB0aGF0IHdhcw0KPiBub3QgbGlraW5nIHRoZSBzd2l0 Y2ggaW50byBBdXRvdmFjTWVtQ3h0IHRoYXQgeW91J2QgYWRkZWQgaW4NCj4g YXV0b3ZhY3V1bV9kb192YWNfYW5hbHl6ZSAuLi4gd2l0aCB0aGlzIHBhdGNo LCB3ZSBjYW4gZHJvcCB0aGF0Lg0KDQpZdXAuICBJ4oCZbGwgZ28gYWhlYWQg YW5kIHVwZGF0ZSB0aGF0IHBhdGNoIG5vdy4NCg0KTmF0aGFuDQoNCg0KCi0t IApTZW50IHZpYSBwZ3NxbC1oYWNrZXJzIG1haWxpbmcgbGlzdCAocGdzcWwt aGFja2Vyc0Bwb3N0Z3Jlc3FsLm9yZykKVG8gbWFrZSBjaGFuZ2VzIHRvIHlv dXIgc3Vic2NyaXB0aW9uOgpodHRwOi8vd3d3LnBvc3RncmVzcWwub3JnL21h aWxwcmVmL3Bnc3FsLWhhY2tlcnMK