From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from rn-mailsvcp-ppex-lapp15.apple.com (rn-mailsvcp-ppex-lapp15.rno.apple.com [17.179.253.34]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 3D7463B2A4 for ; Thu, 12 May 2022 16:00:39 -0400 (EDT) Received: from pps.filterd (rn-mailsvcp-ppex-lapp15.rno.apple.com [127.0.0.1]) by rn-mailsvcp-ppex-lapp15.rno.apple.com (8.16.1.2/8.16.1.2) with SMTP id 24CJp0ka032503; Thu, 12 May 2022 13:00:38 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=apple.com; h=content-type : mime-version : subject : from : in-reply-to : date : cc : content-transfer-encoding : message-id : references : to; s=20180706; bh=Rjp9O1m1Oyu3clBMKNPo9YeMNqc/jkWyb9NrJ1hKo5I=; b=QbWyB9gy1VwXoKpUNshQutQRC93mpo1w7O/QHmrx2fItcc3WANDMBgWJVdJrXgXZqR/9 wDyBoBIY8j3m2Tw3ZIXhsOg3QaQX9Y+uocR2dqi8A410mQe4zcUdxC3MKgfU3A9mm7yA 0m/Su/faXiWV2ZsYyU/kX6uuvIwFUVwLSqXnDizFFFHzSKtdx4L27cPlYfnUQXNQGqUs IgAmJeIVcOFR3fflgwu5b7cKFbamQx0haeMA9TsOkHyAjjXmnEArN/TEQSAiimQOXDyS o0MWCTYsTVAjSKhJwsYESQqIQcT7LFo36r9qYB1snaQu0CHYLO4nHYPDOaHmOT+F1Wao dg== Received: from rn-mailsvcp-mta-lapp03.rno.apple.com (rn-mailsvcp-mta-lapp03.rno.apple.com [10.225.203.151]) by rn-mailsvcp-ppex-lapp15.rno.apple.com with ESMTP id 3fwpbdfd35-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NO); Thu, 12 May 2022 13:00:38 -0700 Received: from rn-mailsvcp-mmp-lapp02.rno.apple.com (rn-mailsvcp-mmp-lapp02.rno.apple.com [17.179.253.15]) by rn-mailsvcp-mta-lapp03.rno.apple.com (Oracle Communications Messaging Server 8.1.0.18.20220407 64bit (built Apr 7 2022)) with ESMTPS id <0RBS00HW6CX08U40@rn-mailsvcp-mta-lapp03.rno.apple.com>; Thu, 12 May 2022 13:00:36 -0700 (PDT) Received: from process_milters-daemon.rn-mailsvcp-mmp-lapp02.rno.apple.com by rn-mailsvcp-mmp-lapp02.rno.apple.com (Oracle Communications Messaging Server 8.1.0.18.20220407 64bit (built Apr 7 2022)) id <0RBS00Z00CPNKD00@rn-mailsvcp-mmp-lapp02.rno.apple.com>; Thu, 12 May 2022 13:00:36 -0700 (PDT) X-Va-A: X-Va-T-CD: fcba8fdab1f0b30e21031843d6897d04 X-Va-E-CD: 9254c702977b534b0130aa1a7e25f806 X-Va-R-CD: dfad40a3b111b5699441d76301e80d18 X-Va-CD: 0 X-Va-ID: 955ccc46-bb6e-4e41-af31-550a6dbeef55 X-V-A: X-V-T-CD: fcba8fdab1f0b30e21031843d6897d04 X-V-E-CD: 9254c702977b534b0130aa1a7e25f806 X-V-R-CD: dfad40a3b111b5699441d76301e80d18 X-V-CD: 0 X-V-ID: 83385982-d2bc-469b-9feb-5b5374e67a72 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.486, 18.0.858 definitions=2022-05-12_13:2022-05-12, 2022-05-12 signatures=0 Received: from smtpclient.apple ([17.192.155.244]) by rn-mailsvcp-mmp-lapp02.rno.apple.com (Oracle Communications Messaging Server 8.1.0.18.20220407 64bit (built Apr 7 2022)) with ESMTPSA id <0RBS00D32CWZDO00@rn-mailsvcp-mmp-lapp02.rno.apple.com>; Thu, 12 May 2022 13:00:35 -0700 (PDT) Content-type: text/plain; charset=us-ascii MIME-version: 1.0 (Mac OS X Mail 16.0 \(3696.80.82.1.1\)) From: Christoph Paasch In-reply-to: Date: Thu, 12 May 2022 13:00:35 -0700 Cc: bloat@lists.bufferbloat.net Content-transfer-encoding: quoted-printable Message-id: <96F2051D-753D-4D67-A6D3-5A053975508C@apple.com> References: To: nichols@pollere.net X-Mailer: Apple Mail (2.3696.80.82.1.1) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.486, 18.0.858 definitions=2022-05-12_12:2022-05-12, 2022-05-12 signatures=0 Subject: Re: [Bloat] Ookla - Introducing a Better Measure of Latency X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 May 2022 20:00:39 -0000 I'm not aware of any rigorous study. But, just from the code, I know = ICMP ping in many cases has a different traffic-class and thus = implicitly gets quite a different treatment than real traffic. However, Ookla uses TCP (port 8080) to probe the latency in their app. Christoph > On May 12, 2022, at 12:44 PM, Kathleen Nichols = wrote: >=20 > a ping by any other name... >=20 > Has anyone ever done a rigorous study to see how well ping delays = correspond to the delay that information-carrying packets experience? >=20 > On 5/12/22 10:15 AM, Christoph Paasch via Bloat wrote: >> Ookla's measure of "loaded latency": >> https://www.ookla.com/articles/introducing-loaded-latency = >> This will hopefully be a shift in how operators approach the = bufferbloat problem. >> Christoph >> _______________________________________________ >> Bloat mailing list >> Bloat@lists.bufferbloat.net >> https://lists.bufferbloat.net/listinfo/bloat >=20 > _______________________________________________ > Bloat mailing list > Bloat@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/bloat