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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: CH0PR02MB7980.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 955fa7f7-dd8c-402a-1834-08dabb8c82dc X-MS-Exchange-CrossTenant-originalarrivaltime: 31 Oct 2022 22:08:59.1155 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: e741d71c-c6b6-47b0-803c-0f3b32b07556 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: a8SyGx8LSrjjUQdd1clIkKKSiTzq603chYhX+tOeL1AX27cHDK9xlNxraBtcKgPc X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR02MB6921 X-TM-SNTS-SMTP: E3A61CAFDBED9F8A3EE3E83F46E30C60D1543EED8525A1063EB6ADFFAA1C1F6C2 X-Proofpoint-ORIG-GUID: e_nMGHDcMAYP3MNiKDjQZAO_4Zeic7ZV X-Proofpoint-GUID: e_nMGHDcMAYP3MNiKDjQZAO_4Zeic7ZV X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-10-31_21,2022-10-31_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_policy_notspam policy=outbound_policy score=0 lowpriorityscore=0 adultscore=0 phishscore=0 mlxlogscore=999 clxscore=1011 bulkscore=0 spamscore=0 malwarescore=0 impostorscore=0 priorityscore=1501 mlxscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2210170000 definitions=main-2210310136 Subject: Re: [Rpm] [ippm] Preliminary measurement comparison of "Working Latency" metrics 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: Mon, 31 Oct 2022 22:09:13 -0000 > -----Original Message----- > From: rjmcmahon > Sent: Monday, October 31, 2022 2:53 PM > To: Dave Taht > Cc: MORTON JR., AL ; Rpm ; > ippm@ietf.org > Subject: Re: [Rpm] [ippm] Preliminary measurement comparison of "Working > Latency" metrics >=20 > Would it be possible to get some iperf 2 bounceback test results too? >=20 > https://urldefense.com/v3/__https://sourceforge.net/projects/iperf2/__;!!= BhdT! > gmYpYN3pBO-aWMfjDRdVRFQ20aHQ5nDHOhEVY1y- > MkFFyH8YmM4wf8cEtaxzvcwTMaCaJOCNRBtj0tnz9A$ >=20 > Also, for the hunt algo, maybe use TCP first to get a starting point and > then hunt? Just a thought. >=20 > Thanks, > Bob > > Thanks for your suggestion, Bob, and it's nice to meet you!=20 I was only familiar with the "old" iperf2 at: https://iperf.fr/iperf-doc.php before your message and URL arrived (yet another segment of the elephant!). I didn't quickly find whether your code will run on linux (ubuntu for me). = I suppose I use the .tar.gz and compile locally. Let me know, I've got some= other tools to check-out first. You suggest the bounceback test option (I found it on the man page), but th= ere are lots of options and six versions of bounceback! Based on the resul= ts I already reported, can you suggest a specific version of bounceback and= a set of options that would be a good first try? (see the man page at https://iperf2.sourceforge.io/iperf-manpage.html ) Regarding our hunt algorithms (search for max), the new Type C algo (in rel= ease 7.5.0) locates the Max very quickly. I showed a comparison of our Type= B and Type C search algorithms on a slide at the IPPM meeting in July. See= Slide 10: https://datatracker.ietf.org/meeting/114/materials/slides-114-ippm-sec-dir-= review-discussion-test-protocol-for-one-way-ip-capacity-measurement-00 The measured capacity reaches 1 Gbps in about 1 second with the Type C algo= rithm, without choosing or testing for a starting point (our default starti= ng point rate is ~500kbps, very low to accommodate "any" subscribed rate). regards, and thanks again, Al