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 1tKjbT-00ATSm-KV for pgsql-committers@arkaria.postgresql.org; Mon, 09 Dec 2024 19:39:35 +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 1tKjbR-00B2Sp-2Q for pgsql-committers@arkaria.postgresql.org; Mon, 09 Dec 2024 19:39:34 +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 1tKjal-00Azx9-5C for pgsql-committers@lists.postgresql.org; Mon, 09 Dec 2024 19:38:52 +0000 Received: from mahout.postgresql.org ([2001:4800:3e1:1::227]) by makus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1tKjai-001x6y-2x for pgsql-committers@lists.postgresql.org; Mon, 09 Dec 2024 19:38:51 +0000 Received: from gemulon.postgresql.org ([72.32.157.198]) by mahout.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1tKjah-00653b-AL for pgsql-committers@lists.postgresql.org; Mon, 09 Dec 2024 19:38:47 +0000 Received: from localhost ([127.0.0.1] helo=gemulon.postgresql.org) by gemulon.postgresql.org with esmtp (Exim 4.94.2) (envelope-from ) id 1tKjaf-001umn-Qf for pgsql-committers@lists.postgresql.org; Mon, 09 Dec 2024 19:38:46 +0000 Content-Type: multipart/mixed; boundary="===============8916945144954716191==" MIME-Version: 1.0 From: Tom Lane To: pgsql-committers@lists.postgresql.org Subject: pgsql: Simplify executor's determination of whether to use parallelism. X-Auto-Response-Suppress: All Auto-Submitted: auto-generated Message-Id: Date: Mon, 09 Dec 2024 19:38:46 +0000 List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk --===============8916945144954716191== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 U2ltcGxpZnkgZXhlY3V0b3IncyBkZXRlcm1pbmF0aW9uIG9mIHdoZXRoZXIgdG8gdXNlIHBhcmFs bGVsaXNtLgoKT3VyIHBhcmFsbGVsLW1vZGUgY29kZSBvbmx5IHdvcmtzIHdoZW4gd2UgYXJlIGV4 ZWN1dGluZyBhIHF1ZXJ5CmluIGZ1bGwsIHNvIEV4ZWN1dGVQbGFuIG11c3QgZGlzYWJsZSBwYXJh bGxlbCBtb2RlIHdoZW4gaXQgaXMKYXNrZWQgdG8gZG8gcGFydGlhbCBleGVjdXRpb24uICBUaGUg cHJldmlvdXMgbG9naWMgZm9yIHRoaXMKaW52b2x2ZWQgcGFzc2luZyBkb3duIGEgZmxhZyAodmFy aW91c2x5IG5hbWVkIGV4ZWN1dGVfb25jZSBvcgpydW5fb25jZSkgZnJvbSBjYWxsZXJzIG9mIEV4 ZWN1dG9yUnVuIG9yIFBvcnRhbFJ1bi4gIFRoaXMgaXMKb3ZlcmNvbXBsaWNhdGVkLCBhbmQgdW5z dXJwcmlzaW5nbHkgc29tZSBvZiB0aGUgY2FsbGVycyBkaWRuJ3QKZ2V0IGl0IHJpZ2h0LCBzaW5j ZSBpdCByZXF1aXJlcyBrZWVwaW5nIHN0YXRlIHRoYXQgbm90IGFsbCBvZgp0aGVtIGhhdmUgaGFu ZHk7IG5vdCB0byBtZW50aW9uIHRoYXQgdGhlIHJlcXVpcmVtZW50cyBmb3IgaXQgd2VyZQp1bmRv Y3VtZW50ZWQuICBUaGF0IGxlZCB0byBhc3NlcnRpb24gZmFpbHVyZXMgaW4gc29tZSBjb3JuZXIK Y2FzZXMuICBUaGUgb25seSBzdGF0ZSB3ZSByZWFsbHkgbmVlZCBmb3IgdGhpcyBpcyB0aGUgZXhp c3RpbmcKUXVlcnlEZXNjLmFscmVhZHlfZXhlY3V0ZWQgZmxhZywgc28gbGV0J3MganVzdCBwdXQg YWxsIHRoZQpyZXNwb25zaWJpbGl0eSBpbiBFeGVjdXRlUGxhbi4gIChJdCBjb3VsZCBoYXZlIGJl ZW4gZG9uZSBpbgpFeGVjdXRvclJ1biB0b28sIGxlYWRpbmcgdG8gYSBzbGlnaHRseSBzaG9ydGVy IHBhdGNoIC0tIGJ1dCBpZgp0aGVyZSdzIGV2ZXIgbW9yZSB0aGFuIG9uZSBjYWxsZXIgb2YgRXhl Y3V0ZVBsYW4sIGl0IHNlZW1zIGJldHRlcgp0byBoYXZlIHRoaXMgbG9naWMgaW4gdGhlIHN1YnJv dXRpbmUgdGhhbiB0aGUgY2FsbGVycy4pCgpUaGlzIG1ha2VzIHRob3NlIEV4ZWN1dG9yUnVuL1Bv cnRhbFJ1biBwYXJhbWV0ZXJzIHVubmVjZXNzYXJ5LgpJbiBtYXN0ZXIgaXQgc2VlbXMgb2theSB0 byBqdXN0IHJlbW92ZSB0aGVtLCByZXR1cm5pbmcgdGhlCkFQSSBmb3IgdGhvc2UgZnVuY3Rpb25z IHRvIHdoYXQgaXQgd2FzIGJlZm9yZSBwYXJhbGxlbGlzbS4KU3VjaCBhbiBBUEkgYnJlYWsgaXMg Y2xlYXJseSBub3Qgb2theSBpbiBzdGFibGUgYnJhbmNoZXMsCmJ1dCBmb3IgdGhlbSB3ZSBjYW4g anVzdCBsZWF2ZSB0aGUgcGFyYW1ldGVycyBpbiBwbGFjZSBhZnRlcgpkb2N1bWVudGluZyB0aGF0 IHRoZXkgZG8gbm90aGluZy4KClBlciByZXBvcnQgZnJvbSBZdWdvIE5hZ2F0YSwgd2hvIGFsc28g cmV2aWV3ZWQgYW5kIHRlc3RlZAp0aGlzIHBhdGNoLiAgQmFjay1wYXRjaCB0byBhbGwgc3VwcG9y dGVkIGJyYW5jaGVzLgoKRGlzY3Vzc2lvbjogaHR0cHM6Ly9wb3N0Z3IuZXMvbS8yMDI0MTIwNjA2 MjU0OS43MTBkYzAxY2Y5MTIyNDgwOWRkNmMwZTFAc3Jhb3NzLmNvLmpwCgpCcmFuY2gKLS0tLS0t ClJFTF8xM19TVEFCTEUKCkRldGFpbHMKLS0tLS0tLQpodHRwczovL2dpdC5wb3N0Z3Jlc3FsLm9y Zy9wZy9jb21taXRkaWZmLzRkMjBiYWQ1ZTljNmFmYzM4OWQwMzdmNmEyY2IzYzYyN2U4NDVkZDIK Ck1vZGlmaWVkIEZpbGVzCi0tLS0tLS0tLS0tLS0tCnNyYy9iYWNrZW5kL2V4ZWN1dG9yL2V4ZWNN YWluLmMgfCA0NyArKysrKysrKysrKysrKysrKystLS0tLS0tLS0tLS0tLS0tLS0tLS0tLQpzcmMv YmFja2VuZC90Y29wL3Bvc3RncmVzLmMgICAgIHwgIDQgKystLQpzcmMvYmFja2VuZC90Y29wL3Bx dWVyeS5jICAgICAgIHwgMTMgKysrKy0tLS0tLS0tCnNyYy9pbmNsdWRlL2V4ZWN1dG9yL2V4ZWNk ZXNjLmggfCAgMiArLQpzcmMvaW5jbHVkZS91dGlscy9wb3J0YWwuaCAgICAgIHwgIDIgKy0KNSBm aWxlcyBjaGFuZ2VkLCAyOSBpbnNlcnRpb25zKCspLCAzOSBkZWxldGlvbnMoLSkKCg== --===============8916945144954716191==--