From nobody Mon Sep 13 12:33:39 2021 Return-Path: X-Original-To: quic@ietfa.amsl.com Delivered-To: quic@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1E7743A1720 for ; Mon, 13 Sep 2021 12:33:37 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.549 X-Spam-Level: X-Spam-Status: No, score=-2.549 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.452, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=fb.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id OoApluKDgTRd for ; Mon, 13 Sep 2021 12:33:31 -0700 (PDT) Received: from mx0a-00082601.pphosted.com (mx0a-00082601.pphosted.com [67.231.145.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D50043A171E for ; Mon, 13 Sep 2021 12:33:31 -0700 (PDT) Received: from pps.filterd (m0109334.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.1.2/8.16.0.43) with SMTP id 18DH3qYj016272; Mon, 13 Sep 2021 12:33:31 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : subject : date : message-id : references : in-reply-to : content-type : content-id : content-transfer-encoding : mime-version; s=facebook; bh=Wu5OuBqBWhF6HJ2WWzM0G41nLNAye2S1WDxSiJ33VFw=; b=QrXNER5BbvFb0AHnOS9C17RqI4c6l30G63kNdGug8ruooekFRDtiFJO/E3LonlWPnaBS La1H3WCVbQR5dUREcfenxoJ+ngzVZ6rB8cCwVjQ0cMZy+Bj8bTemFbMt/0uLufzq7uPG /TXxbcuLI1J0XYXVkBZoQi/XPsZtHDSqwvs= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 3b1xp353rk-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Mon, 13 Sep 2021 12:33:31 -0700 Received: from NAM04-BN8-obe.outbound.protection.outlook.com (100.104.31.183) by o365-in.thefacebook.com (100.104.36.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.14; Mon, 13 Sep 2021 12:33:29 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Gh8m9bQxkBkvw8y78QsS1PkSqBmvXwANK9pgmcWciaigw/7g1X62jfRW+7iIs5MrELGqFuUEvBrNVhkStT0el9J8+8sScSQ03oAQDy/abkR3YEdccyTKZA7v07iM4HOqavhXojeKb3GUkwbKJyn8fet6u+yQM4SZBU9HcKFczpzDGgU12UT4Yw7BGt3mDMWaJqKjzTT7kGjsI3Dpu2X+yTilrrlHNz73taY4mPrtgC5OWosb0YGs1Y+m5jrEeaTu4GQWfqFiPFMLdMppX4xjzbHPl2xqtQ3lIRcBtf/3YBUfSlGLsi/SZVvhat+2jP33V8Uuyofz4VmbmeMHDS4CEA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=Wu5OuBqBWhF6HJ2WWzM0G41nLNAye2S1WDxSiJ33VFw=; b=aOzPBAzdKmzwDB6nCPLH+AeHrHdtL0HUZvbWZQ6LwX9YJiOMCzgWoXNAB5ljoPGFplb/rCQS9T4u4MDsFHUjHHMhZzfcTzygmuNG4oi+rtJ6qJhdoXiq3ZL75EzmmO/H6oivbz99dk7QyklWuypj9FPY8IhOvoM3D7XRgnu55A2/xBmDQSvStyhkFU2OcV/3GcrB3AdjZkkcgSvBhLKBzteFaooE/+juI/hkl1z8YGtoPyuS0i+93Cn/042ekYud8OQDqVAUiyELzkNB0GyPURspvtQNRdWBMSzWxjf3rhg9uqhbmgzRJnICYEj08+DLuFfSuJq3dYXw064r+EW3mA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=fb.com; dmarc=pass action=none header.from=fb.com; dkim=pass header.d=fb.com; arc=none Received: from MN2PR15MB2687.namprd15.prod.outlook.com (2603:10b6:208:129::15) by MN2PR15MB3375.namprd15.prod.outlook.com (2603:10b6:208:39::27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4500.17; Mon, 13 Sep 2021 19:33:29 +0000 Received: from MN2PR15MB2687.namprd15.prod.outlook.com ([fe80::ddff:5ae0:194f:10e4]) by MN2PR15MB2687.namprd15.prod.outlook.com ([fe80::ddff:5ae0:194f:10e4%6]) with mapi id 15.20.4500.019; Mon, 13 Sep 2021 19:33:29 +0000 From: Roberto Peon To: Martin Thomson , "quic@ietf.org" Subject: Re: Two Notable Ack Frequency Issues Thread-Topic: Two Notable Ack Frequency Issues Thread-Index: AQHXp2faqQFlxzWAAUmtFJuLHHK4vquhFb0AgAAOJgCAAAJKAIAAwh4A Date: Mon, 13 Sep 2021 19:33:29 +0000 Message-ID: <5021E5FE-F19E-44BA-BA50-F9807CF30FCB@fb.com> References: <2eff1b46-65cb-4822-a498-11357ac4cd23@www.fastmail.com> In-Reply-To: <2eff1b46-65cb-4822-a498-11357ac4cd23@www.fastmail.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/16.52.21080801 authentication-results: lowentropy.net; dkim=none (message not signed) header.d=none;lowentropy.net; dmarc=none action=none header.from=fb.com; x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 903680cf-95a2-433d-59a4-08d976ed5d33 x-ms-traffictypediagnostic: MN2PR15MB3375: x-microsoft-antispam-prvs: x-fb-source: Internal x-ms-oob-tlc-oobclassifiers: OLM:8882; x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 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 x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:MN2PR15MB2687.namprd15.prod.outlook.com; PTR:; CAT:NONE; SFS:(4636009)(366004)(64756008)(33656002)(66476007)(66446008)(66556008)(8936002)(2616005)(110136005)(66946007)(4744005)(122000001)(5660300002)(186003)(36756003)(26005)(86362001)(38100700002)(508600001)(76116006)(91956017)(6506007)(8676002)(2906002)(6486002)(316002)(66574015)(6512007)(71200400001)(38070700005)(45980500001); DIR:OUT; SFP:1102; x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: =?utf-8?B?WnhMTUxxN2RlNFN1dFB1WThBM200UXFDTTFyVWEvcFJCd1BGV3YyeEZya1Fr?= =?utf-8?B?UGtYWGthUEYrR3hLeUtqNEpLNDczc2hBSTFHTVAwVFdTUVZYOTNrempVMmxx?= =?utf-8?B?eEh1bEdTZVMxeEJORG5lWFV4TFlLamN0RFZIcndXSGVqdDJCWVhpN0RLaXU2?= =?utf-8?B?RmJ0UnJCL3VTWXVNZkV0TURKT0ExamhaZjVGUkdPZ0FiL0hSc1RrSmYyZDJE?= =?utf-8?B?V2NYZDM1aFJyU1hwRis0TnVVVTBpZXRoTS8zSG5saXdTcDdHcW81bWdvcFZW?= =?utf-8?B?WHdsK2ljQUltTFpCY1dvS0EzbHkwa1VZT1IzbEVZSVQ4UnI5YjdkRFZVdmVq?= =?utf-8?B?VUNCRnZZMFFlWGdhVHllbFhtcUFYUi9UMEdKKzNkNk9WSkg0WGlwdXZ0TWkr?= =?utf-8?B?YkV1YWphc3VzanVtdWJXRUJkSkxCc1ZNWDZsSVFJWEtma0JRcm5BQWN6blYw?= =?utf-8?B?UU5qb0xCakVvczZMamQxL1FQY0hkVzBxeEFsek03UlYwc05Ed2NRblVYUnR2?= =?utf-8?B?ZXhqemoyR09qZVpGU0xCS3lNYW1uSmFTdFNWdFpock5vQTFmRDYzeXJpakhK?= =?utf-8?B?OXF6R3FtcU9QeEcwY3VaVFA1N2dnK3FpUTM5YWI4M0FMdUtXV2JUWkpjaTlO?= =?utf-8?B?ZzRVUS9yMzJXVmlxOTNyVEgzcmxkUU11NmRuUjRCSmRhRFcyQ3F2TWRoSkVi?= =?utf-8?B?VUE0VElLWE9iNnQ0ajVadTNEZjRCMGdJZ201a3VSZmZJSTBQQTVKUnVuL3FP?= =?utf-8?B?c1N3Ty9VclF0UTQwQXZValpUU0dBcS9HZjc3Q1BPb2d1Z09Fb3N6d0x1Yi9p?= =?utf-8?B?VUd4MUpUWTRYQk9BakR1bzUvNERuRzNuczl5a3p4NzhYbGRkOWFIMjBRckpX?= =?utf-8?B?amExcXl4N1F3eTlyWXo5bFpyOXgwVnVsZEkzRFVERWhYNXZUcy81dk1xVWw1?= =?utf-8?B?UTg2cU5FWkZTU2lqNUtMYS9UOS9GR1lIaVBxVzJza3A3WXB2NHFhaWovRU5Y?= =?utf-8?B?TDdFN0lhdGhhT0FQZ0JmVFFadFhQWHozMlZER2lMckpBdWF2UFdxbzlZY3h3?= =?utf-8?B?WVBsRFRPeUxhMlBpOUczTmI2ZCtTK0ZXOGI5VFVTMzlOQ2N1S09sdk9xY0ZE?= =?utf-8?B?WVVIcVZQVEErRkd1U0diYytSSjVMdFREd0JMV0hVaVpnWG5NYzliM2E3YXMw?= =?utf-8?B?M3JhTmhEakh3cERHU0FhMzNCeEFxbWxxRGxwUko5Q0VuRE9VbEg1OVVFcWY3?= =?utf-8?B?YmhCaEw0WUErMXQwTFlEekhJTUNUL3RQQWgvcW5ZVVhMVmhWRFlhelZNWCtj?= =?utf-8?B?M21IMERmckYxUllObUVzaWxKejZSUGthbEhaS25ReWp1LzNaZVJ1dURTbmY5?= =?utf-8?B?NEpCSUxjam0ybnlMbHdLQTcrZ2VHVFhDWFdRMTAzekY2V0dEQ1BESExUWmxI?= =?utf-8?B?VGJmOEFOT2NhckM3bEtEVmRjbXY3Tzl1MDIvdXFMSStMd2FUR09HNGZtT0R3?= =?utf-8?B?R24xeHZtcmlnS2x1Qi9DUEpqM3BLZDlyWFRiM2wvSzVRUzVheE0yR2xvQkZ2?= =?utf-8?B?bVRDbnJ5N3ZGVlJYRzVwc1F6TTZTREZ2d0E2cVJCL2lpeWNESkVIc201ZUxU?= =?utf-8?B?akxyUnRRcUo0Mjk3R0xwUElDSEs5TWFlME9ZeXRpUS93YXpYQ04remc0YUl5?= =?utf-8?B?V2wybkJ0NXZGdFFlbVN1anhseFFjZ2N2b0JhdCs3THFyYmVpL3ljdndEcFZK?= =?utf-8?B?VlZnSG15VjFnMVRpWVBXZWVqMDFnYTFHc0gzWTNqeUZHSStIM2FUaG5kMFpx?= =?utf-8?B?ZmFodFBwTTd1aE4wR3U1dz09?= x-ms-exchange-transport-forked: True Content-Type: text/plain; charset="utf-8" Content-ID: Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MN2PR15MB2687.namprd15.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 903680cf-95a2-433d-59a4-08d976ed5d33 X-MS-Exchange-CrossTenant-originalarrivaltime: 13 Sep 2021 19:33:29.1609 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 8ae927fe-1255-47a7-a2af-5f3a069daaa2 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: JO1Sok3Tupdg1LBK24W7WfuazAFnGQVcmSol7NvSwZxRDVkPQWn4R7orGqOSMsOw X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR15MB3375 X-OriginatorOrg: fb.com X-Proofpoint-GUID: AI60KuicujAVzdHKExTnqRwzR-P-OSdC X-Proofpoint-ORIG-GUID: AI60KuicujAVzdHKExTnqRwzR-P-OSdC X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.182.1,Aquarius:18.0.790,Hydra:6.0.391,FMLib:17.0.607.475 definitions=2021-09-13_09,2021-09-09_01,2020-04-07_01 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 phishscore=0 mlxlogscore=643 malwarescore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 bulkscore=0 adultscore=0 impostorscore=0 suspectscore=0 priorityscore=1501 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2109030001 definitions=main-2109130117 X-FB-Internal: deliver Archived-At: X-BeenThere: quic@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Main mailing list of the IETF QUIC working group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 13 Sep 2021 19:33:38 -0000 V2l0aG91dCBBQ0tzLCBpdCBzZWVtcyBkaWZmaWN1bHQgdG8gZG8gZmxvdyBjb250cm9sIGFuZC9v ciBjb25nZXN0aW9uIGNvbnRyb2wuDQpJJ2QgYmUgcXVpdGUgb3Bwb3NlZCB0byBkaXRjaGluZyBB Q0tzIHVubGVzcyBpdCB3YXMgZXh0cmVtZWx5IGNsZWFyIGhvdyB0byBhY2hpZXZlIGEgc3RhYmxl IGludGVybmV0IHdpdGhvdXQgaXQuDQpUaGlzIGlzIHdvcnRoeSBvZiBhIGZhaXIgYml0IG9mIGRp c2N1c3Npb24gdGhhdCBJJ3ZlIHlldCB0byBzZWUgaGVyZS4NCi09Ug0KDQrvu79PbiA5LzEyLzIx LCA1OjU5IFBNLCAiUVVJQyBvbiBiZWhhbGYgb2YgTWFydGluIFRob21zb24iIDxxdWljLWJvdW5j ZXNAaWV0Zi5vcmcgb24gYmVoYWxmIG9mIG10QGxvd2VudHJvcHkubmV0PiB3cm90ZToNCg0KICAg IE9uIE1vbiwgU2VwIDEzLCAyMDIxLCBhdCAxMDo1MCwgTWF0dCBKb3JhcyB3cm90ZToNCiAgICA+ IEFzIGZvciBOT19BQ0ssIEkgdGhpbmsgaXQgaXMgYmVzdCBjb25zaWRlcmVkIGluIHRoZSBjb250 ZXh0IG9mIHRoZSANCiAgICA+IHJlbGF0ZWQgaXNzdWVbMl0gaW4gdGhlIERBVEFHUkFNIGRyYWZ0 LiANCg0KICAgIFRvbW15IGFscmVhZHkgc2FpZCBpdDoNCg0KICAgICJZZXMsIEkgdGhpbmsgaGF2 aW5nIGEgbmV3IGRvY3VtZW50IHdpdGggYSBwcm9ibGVtIHN0YXRlbWVudCBhbmQgcHJvcG9zYWwg d291bGQgYmUgYmVzdCBoZXJlLiINCg0KDQo=