From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp2.kau.se (smtp2.kau.se [130.243.21.251]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 3DF503B29E for ; Wed, 20 Oct 2021 19:06:03 -0400 (EDT) Received: from mailfilter-ng-1.sunet.se (mailfilter-ng-1.sunet.se [192.36.171.207]) by smtp2.kau.se (Postfix) with ESMTP id DA6581874744 for ; Thu, 21 Oct 2021 01:06:01 +0200 (CEST) X-Halon-ID: 4ac0c9a4-31fa-11ec-8d3b-0050569a42e2 Received: from Exch-A3.personal.kau (exch-a3.kau.se [130.243.19.84]) by mailfilter-ng-1.sunet.se (Halon) with ESMTPS id 4ac0c9a4-31fa-11ec-8d3b-0050569a42e2; Wed, 20 Oct 2021 23:06:00 +0000 (UTC) Received: from Exch-A1.personal.kau (130.243.19.82) by Exch-A3.personal.kau (130.243.19.84) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.1.2308.15; Thu, 21 Oct 2021 01:06:00 +0200 Received: from Exch-A1.personal.kau ([fe80::7862:a3d3:1cba:9754]) by Exch-A1.personal.kau ([fe80::7862:a3d3:1cba:9754%2]) with mapi id 15.01.2308.015; Thu, 21 Oct 2021 01:06:00 +0200 From: =?utf-8?B?QW5uYSBCcnVuc3Ryw7Zt?= To: =?utf-8?B?VG9rZSBIw7hpbGFuZC1Kw7hyZ2Vuc2Vu?= , Michael Welzl CC: Rpm , Keith Winstein , Make-Wifi-fast Thread-Topic: [Make-wifi-fast] tack - reducing acks on wlans Thread-Index: AQHXxSWwVCnKJKRLZ0+4kH0OiD76+avbVJkAgAAt3gCAAAf7AIAACLMAgAACpwCAABBUAIAAB/WAgAA8dwCAABPDgIAAUt0AgAAtN2A= Date: Wed, 20 Oct 2021 23:06:00 +0000 Message-ID: References: <4BD0AC02-62FB-4AE4-B83B-BAF5CCEA2B24@ifi.uio.no> <87lf2of2sl.fsf@toke.dk> <09884015-6428-4402-BE61-9091006D1FB8@ifi.uio.no> <87ee8gf013.fsf@toke.dk> <87bl3jgbgb.fsf@toke.dk> <2BE60847-5C04-4EF5-B1B1-F0A21581AB63@ifi.uio.no> <8735ovg045.fsf@toke.dk> <03C5241C-D3C7-42E7-8552-4F6EAC626F66@ifi.uio.no> <87a6j3e4jj.fsf@toke.dk> In-Reply-To: <87a6j3e4jj.fsf@toke.dk> Accept-Language: en-US, sv-SE Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [130.243.27.149] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Subject: Re: [Rpm] [Make-wifi-fast] tack - reducing acks on wlans X-BeenThere: rpm@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: revolutions per minute - a new metric for measuring responsiveness List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Oct 2021 23:06:03 -0000 LS0tLS1PcmlnaW5hbCBNZXNzYWdlLS0tLS0NCkZyb206IE1ha2Utd2lmaS1mYXN0IDxtYWtlLXdp ZmktZmFzdC1ib3VuY2VzQGxpc3RzLmJ1ZmZlcmJsb2F0Lm5ldD4gT24gQmVoYWxmIE9mIFRva2Ug SMO4aWxhbmQtSsO4cmdlbnNlbiB2aWEgTWFrZS13aWZpLWZhc3QNClNlbnQ6IGRlbiAyMSBva3Rv YmVyIDIwMjEgMDA6MDUNClRvOiBNaWNoYWVsIFdlbHpsIDxtaWNoYXdlQGlmaS51aW8ubm8+DQpD YzogUnBtIDxycG1AbGlzdHMuYnVmZmVyYmxvYXQubmV0PjsgTWFrZS1XaWZpLWZhc3QgPG1ha2Ut d2lmaS1mYXN0QGxpc3RzLmJ1ZmZlcmJsb2F0Lm5ldD47IEtlaXRoIFdpbnN0ZWluIDxrZWl0aHdA Y3Muc3RhbmZvcmQuZWR1Pg0KU3ViamVjdDogUmU6IFtNYWtlLXdpZmktZmFzdF0gdGFjayAtIHJl ZHVjaW5nIGFja3Mgb24gd2xhbnMNCg0KTWljaGFlbCBXZWx6bCA8bWljaGF3ZUBpZmkudWlvLm5v PiB3cml0ZXM6DQoNCj4+IE9uIDIwIE9jdCAyMDIxLCBhdCAxNzo1NywgVG9rZSBIw7hpbGFuZC1K w7hyZ2Vuc2VuIDx0b2tlQHRva2UuZGs+IHdyb3RlOg0KPj4NCj4+IE1pY2hhZWwgV2VsemwgPG1p Y2hhd2VAaWZpLnVpby5ubz4gd3JpdGVzOg0KPj4NCj4+Pj4gT24gMjAgT2N0IDIwMjEsIGF0IDEz OjUyLCBUb2tlIEjDuGlsYW5kLUrDuHJnZW5zZW4gPHRva2VAdG9rZS5kaz4gd3JvdGU6DQo+Pj4+ DQo+Pj4+IE1pY2hhZWwgV2VsemwgPG1pY2hhd2VAaWZpLnVpby5ubz4gd3JpdGVzOg0KPj4+Pg0K Pj4+Pj4+IE9uIDIwIE9jdCAyMDIxLCBhdCAxMjo0NCwgVG9rZSBIw7hpbGFuZC1Kw7hyZ2Vuc2Vu IDx0b2tlQHRva2UuZGs+IHdyb3RlOg0KPj4+Pj4+DQo+Pj4+Pj4gTWljaGFlbCBXZWx6bCA8bWlj aGF3ZUBpZmkudWlvLm5vPiB3cml0ZXM6DQo+Pj4+Pj4NCj4+Pj4+Pj4+IE9uIDIwIE9jdCAyMDIx LCBhdCAxMTo0NCwgVG9rZSBIw7hpbGFuZC1Kw7hyZ2Vuc2VuIDx0b2tlQHRva2UuZGs+IHdyb3Rl Og0KPj4+Pj4+Pj4NCj4+Pj4+Pj4+IE1pY2hhZWwgV2VsemwgPG1pY2hhd2VAaWZpLnVpby5ubz4g d3JpdGVzOg0KPj4+Pj4+Pj4NCj4+Pj4+Pj4+PiBBbSBJIGJlaW5nIG5haXZlPyBXaHkgY2FuJ3Qg c3VjaCBhbiBBUlEgcHJveHkgYmUgZGVwbG95ZWQ/IElzDQo+Pj4+Pj4+Pj4gaXQganVzdCBiZWNh dXNlIHN0YW5kYXJkaXppbmcgdGhpcyBuZWdvdGlhdGlvbiBpcyB0b28NCj4+Pj4+Pj4+PiBkaWZm aWN1bHQsIG9yIHdvdWxkIGl0IGFsc28gYmUgdG9vIGNvbXB1dGF0aW9uYWxseSBoZWF2eSBmb3Ig YW4gQVAgcGVyaGFwcywgYXQgaGlnaCBzcGVlZHM/DQo+Pj4+Pj4+Pg0KPj4+Pj4+Pj4gSW1tZWRp YXRlIHRob3VnaHQ6IHRoaXMgd29uJ3Qgd29yayBmb3IgUVVJQw0KPj4+Pj4+Pg0KPj4+Pj4+PiAu Li4uIGFzLWlzLCB0cnVlLCB0aG91Z2ggTUFTUVVFIGlzIHN0aWxsIGJlaW5nIGRlZmluZWQuIElz IHRoaXMNCj4+Pj4+Pj4gYW4gYXJndW1lbnQgZm9yIGRlZmluaW5nIGl0IGFjY29yZGluZ2x5Pw0K Pj4+Pj4+DQo+Pj4+Pj4gTUFTUVVFIGlzIHByb3h5aW5nLCByaWdodD8gTm90IHF1aXRlIHN1cmUg aWYgaXQncyBzdXBwb3NlZCB0byBiZQ0KPj4+Pj4+IGFsc28gTUlUTSdpbmcgdGhlIHRyYWZmaWM/ DQo+Pj4+Pg0KPj4+Pj4gV2VsbGxsbGwuLi4uIEknbSBub3QgMTAwJSBzdXJlLiBJZiBJIHVuZGVy c3Rvb2QgaXQgY29ycmVjdGx5LA0KPj4+Pj4gaWRlYXMgb24gdGhlIHRhYmxlIHdvdWxkIGhhdmUg aXQgZG8gdGhpcyBpbiBjYXNlIG9mIHR1bm5lbGluZw0KPj4+Pj4gVENQL0lQIG92ZXIgUVVJQywg YnV0IG5vdCBpbiBjYXNlIG9mIFFVSUMgaXRzZWxmIC0gYnV0IHRvIG1lLCB0aGlzDQo+Pj4+PiBp c24ndCBuZWNlc3NhcmlseSBnb29kIGRlc2lnbj8gIEJlY2F1c2U6ICA9Pg0KPj4+Pj4NCj4+Pj4+ DQo+Pj4+Pj4gSW4gYW55IGNhc2UsIGl0IHdvdWxkIHJlcXVpcmUgY2xpZW50cyB0byBuZWdvdGlh dGUgYSBwcm94eQ0KPj4+Pj4+IHNlc3Npb24gd2l0aCB0aGUgQVAgYW5kIHRydXN0IGl0IHRvIGRv IHRoYXQgcHJvcGVybHk/DQo+Pj4+Pg0KPj4+Pj4gPT4gWWVzLg0KPj4+Pj4NCj4+Pj4+DQo+Pj4+ Pj4gVGhpcyBtYXkNCj4+Pj4+PiB3b3JrIGZvciBhIG1hbmFnZWQgc2V0dXAgaW4gYW4gZW50ZXJw cmlzZSwgYnV0IGRvIHlvdSByZWFsbHkNCj4+Pj4+PiBleHBlY3QgbWUgdG8gYmUgT0sgd2l0aCBh bnkgcmFuZG9tIGFjY2VzcyBwb2ludCBpbiBhIGNvZmZlZSBzaG9wIGJlaW5nIGEgTUlUTT8NCj4+ Pj4+DQo+Pj4+PiBNaVRNIGlzIGEgaGFyc2ggdGVybSBmb3IganVzdCBiZWluZyBhYmxlIHRvIEFD SyBvbiBteSBiZWhhbGYuIFNvbWUNCj4+Pj4+IGNhcGFiaWxpdGllcyBjb3VsZCBiZSBkZWZpbmVk LCBhcyBsb25nIGFzIHRoZXkncmUgaW5kZWVkIGRlZmluZWQNCj4+Pj4+IGNsZWFybHkuIFNvIEkg ZG9uJ3Qgc2VlIHdoeSAieWVzLCB5b3UgY2FuIEFDSyBteSBwYWNrZXRzIG9uIG15DQo+Pj4+PiBi ZWhhbGYgd2hlbiB5b3UgZ2V0IGEgTEwtQUNLIGZyb20gbWUiIGlzIE1pVE0naW5nLiBJIGJlbGll dmUgdGhhdA0KPj4+Pj4gdGhpbmdzIGFyZSBub3cgYWxsIGJlaW5nIGx1bXBlZCB0b2dldGhlciwg d2hpY2ggbWF5IGJlIHdoeSB0aGUNCj4+Pj4+IGRlc2lnbiBtYXkgZW5kIHVwIGJlaW5nIHRvbyBw cm9oaWJpdGl2ZS4NCj4+Pj4NCj4+Pj4gUmlnaHQsIG9rYXksIGJ1dCBldmVuIHNldHRpbmcgYXNp ZGUgdGhlIGVuY3J5cHRpb24gaXNzdWUsIHlvdSdyZQ0KPj4+PiBzdGlsbCBkZWxlZ2F0aW5nIHNv bWV0aGluZyB0aGF0IGhhcyBwb3RlbnRpYWxseSBxdWl0ZSBhIHNpZ25pZmljYW50DQo+Pj4+IGlt cGFjdCBvbiB5b3VyIGFwcGxpY2F0aW9uJ3MgcGVyZm9ybWFuY2UgdG8gYW4gQVAgdGhhdCAoanVk Z2luZyBieQ0KPj4+PiB0aGUgc29ycnkgc3RhdGUgb2YgdGhpbmdzIHRvZGF5KSBpcyA1LTEwIHll YXJzIG91dCBvZiBkYXRlIGNvbXBhcmVkDQo+Pj4+IHRvIHRoZSBzb2Z0d2FyZSBydW5uaW5nIG9u IHlvdXIgb3duIG1hY2hpbmUuIE5vdCBzdXJlIHRoYXQncyBzdWNoDQo+Pj4+IGFuIGF0dHJhY3Rp dmUgcHJvcG9zaXRpb24/DQo+Pj4NCj4+PiBEZXBlbmRzIC0gdGhpcyBpcyB3aGF0IGV4cGxpY2l0 bHkgc2lnbmFsaW5nIHRoaXMgY2FwYWJpbGl0eSBjb3VsZCBzb2x2ZS4NCj4+Pg0KPj4+IFRha2Ug VENQLCBmb3IgZXhhbXBsZTogaWYgSSdtIGFsbCBoeXBlZCBvbiBMNFMsIEkgbWF5IG5vdCB3YW50 IHRvDQo+Pj4gZGVsZWdhdGUgQUNLaW5nIHRvIGFuIEFQIHRoYXQgZG9lc24ndCBzdXBwb3J0IEFD S2luZyB3aXRob3V0IHN1cHBvcnQNCj4+PiBmb3IgYWNjdXJhdGUgRUNOIHNpZ25hbGluZy4gSWYg SSBkbyBNUFRDUCBhbmQgc2VlIHN1cHBvcnQgZnJvbSB0aGUNCj4+PiBwZWVyLCB0aGVuIHBlcmhh cHMgSSBkb24ndCB3YW50IHRoaXMgY2FwYWJpbGl0eSBhdCBhbGwuIElmIEkgZG9uJ3QNCj4+PiBj YXJlIGFib3V0IHRoZXNlIHR3byB0aGluZ3MuLi4gd2VsbCwgdGhlbiwgQUNLaW5nIGhhc24ndCBj aGFuZ2VkDQo+Pj4gdmVyeSBtdWNoIGZvciBzZXZlcmFsIHllYXJzLiBJIG1heSB3YW50IHRvIGlu Y2x1ZGUgc29tZSBpbml0aWFsDQo+Pj4gb3B0aW9uIGluZm9ybWF0aW9uIGluIHRoYXQgc2lnbmFs LCBmb3IgdGhlIEFQIHRvIHJlbGF5IC0gZS5nLiBhYm91dA0KPj4+IHdpbmRvdyBzY2FsaW5nIGFu ZCBzdWNoLiBJIHN1c3BlY3QgdGhhdCBRVUlDIC8gTUFTUVVFIEFDS2luZyBpcyBhbHNvDQo+Pj4g Z29pbmcgdG8gc3RhYmlsaXplIHNvbWV3aGF0IGF0IHNvbWUgcG9pbnQgaW4gdGltZS4NCj4+DQo+ PiBTdGlsbCBhIGxvdCBvZiBjb21wbGV4aXR5IGZvciBzb21ldGhpbmcgdGhhdCAoYWNjb3JkaW5n IHRvIHRoYXQgVEFDSw0KPj4gcGFwZXIpIGlzIG9ubHkgYSBtYXJnaW5hbCBpbXByb3ZlbWVudCBv dmVyIHdoYXQgY2FuIGJlIGFjaGlldmVkDQo+PiBlbmQtdG8tZW5kLi4uDQo+DQo+IEl0J3Mgbm90 IGV4YWN0bHkgaHVnZSBjb21wbGV4aXR5IGNvbXBhcmVkIHRvIG1hbnkgb2YgdGhlIG90aGVyIHRo aW5ncw0KPiB3ZSBoYXZlLCBhbmQgSSdtIG5vdCBzdXJlIHRoZSBpbXByb3ZlbWVudCBpcyBtYXJn aW5hbDogdGhpcyBtYXkgZGVwZW5kDQo+IG9uIHZhcmlvdXMgdGhpbmdzLCBzdWNoIGFzIHRoZSBu dW1iZXIgb2Ygbm9kZXMuLi4gaXQncyBhIDEwMCUNCj4gcmVkdWN0aW9uIG9mIEFDSyB0cmFmZmlj ICA6KQ0KDQpNb2RpZnlpbmcgdGhlIGxpbmsgbGF5ZXIgZm9yIGVhY2ggd2lyZWxlc3MgdGVjaG5v bG9neSB0byBjb252ZXkgdGhlIGluZm9ybWF0aW9uIHRoYXQgdGhlIEFQIHNob3VsZCBzZW5kIHRo ZSBUQ1AgQUNLLCBhcyBkb25lIGluIHRoZSBwYXBlciwgaXMgcXVpdGUgY29tcGxleCBmcm9tIGEg ZGVwbG95bWVudCBwZXJzcGVjdGl2ZSBJIHRoaW5rLiBBbmQgaXQgaXMgYWxzbyBub3QgYWxsIEFD S3MgdGhhdCBjYW4gYmUgcmVwbGFjZWQgc28gbm90IHN1cmUgd2hhdCB0aGUgcmVkdWN0aW9uIGlz IGluIHByYWN0aWNlLiBSZWR1Y2luZyB0aGUgbnVtYmVyIG9mIEFDS3MgZTJlIHNlZW1zIHByZWZl cmFibGUgSSB0aGluay4NCg0KQW5uYQ0KDQpOw6RyIGR1IHNraWNrYXIgZS1wb3N0IHRpbGwgS2Fy bHN0YWRzIHVuaXZlcnNpdGV0IGJlaGFuZGxhciB2aSBkaW5hIHBlcnNvbnVwcGdpZnRlcjxodHRw czovL3d3dy5rYXUuc2UvZ2Rwcj4uDQpXaGVuIHlvdSBzZW5kIGFuIGUtbWFpbCB0byBLYXJsc3Rh ZCBVbml2ZXJzaXR5LCB3ZSB3aWxsIHByb2Nlc3MgeW91ciBwZXJzb25hbCBkYXRhPGh0dHBzOi8v d3d3LmthdS5zZS9lbi9nZHByPi4NCg==