From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sender4-op-o14.zoho.com (sender4-op-o14.zoho.com [136.143.188.14]) (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 62B123CB37 for ; Fri, 28 Oct 2022 17:45:43 -0400 (EDT) ARC-Seal: i=1; a=rsa-sha256; t=1666993538; cv=none; d=zohomail.com; s=zohoarc; b=EK1nOPxB0yng/Mssmkj1DDSQGqEMbM8fMstag4neXP1NyCcplBL9qdPiu49aOupIOvVtpPXVTu25Tsx4n5TGM+Ig/6e6eHiGzWlwgiNz8uVl6Tk00yOutzNhrv0zbXGyzN5J/LjUpizyYtBvj8TPm+WIMQ2cp7bzswIzXDrazSw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1666993538; h=Content-Type:Date:From:MIME-Version:Message-ID:Subject:To; bh=WLCeIbkPyafpRur3vrTXza2cihhJfTN3RLTzYKiqKIk=; b=GmpWC7ZhhGlPWdVa6CnABLsNNIlg8uBYA1XXYuFbLvC0kpLCeyakrTLuFwYRdbueXr4qVBsMpu/R/5oRoIXT/7bqhEeiCZK76FWBPYOJdg4TMCHbSIawXOSSHnFcLexyjPwzddLViXLcDoyd1iaJJ3f8mkqq4w/ok9hMZ+W+Yuc= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=jonathanfoulkes.com; spf=pass smtp.mailfrom=jf@jonathanfoulkes.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1666993538; s=zoho; d=jonathanfoulkes.com; i=jf@jonathanfoulkes.com; h=From:From:Content-Type:Mime-Version:Subject:Subject:Message-Id:Message-Id:Date:Date:To:To:Reply-To:Cc; bh=WLCeIbkPyafpRur3vrTXza2cihhJfTN3RLTzYKiqKIk=; b=I5mvYRCCmBZ3glJr5iPCWCCrfNh0UICAGspDzcKR+5laTewFpusnRJR3+QjDKFZE yYrgyRqhNeQ5nLGFc1mxabZaJVPgPtchCLsR+4V+AGGPzb616PboXDTXo1lC2okYg0h 37Xile4NTv550NY5wuAsKSpCckA+lQY/vtWoJTKQ= Received: from smtpclient.apple (h12.17.96.50.static.ip.windstream.net [50.96.17.12]) by mx.zohomail.com with SMTPS id 1666993536470167.39579318564438; Fri, 28 Oct 2022 14:45:36 -0700 (PDT) From: "jf@jonathanfoulkes.com" Content-Type: multipart/alternative; boundary="Apple-Mail=_D2C203E4-FD6C-429F-81DB-2F46AE18676A" Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3731.200.110.1.12\)) Message-Id: Date: Fri, 28 Oct 2022 17:45:25 -0400 To: Rpm X-Mailer: Apple Mail (2.3731.200.110.1.12) X-ZohoMailClient: External Subject: [Rpm] Changes to RPM calculation for MacOS Ventura? 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: Fri, 28 Oct 2022 21:45:43 -0000 --Apple-Mail=_D2C203E4-FD6C-429F-81DB-2F46AE18676A Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hopefully, Christoph can provide some details on the changes from the = prior networkQuality test, as we=E2=80=99re seeing some pretty large = changes in results for the latest RPM tests. Where before we=E2=80=99d see results in the >1,500 RPM (and multiple = >2,000 RPM results) for a DOCSIS 3.1 line with QoS enabled (180 down/35 = up), it now returns peak download RPM of ~600 and ~800 for upload. latest results: =3D=3D=3D=3D SUMMARY =3D=3D=3D=3D Uplink capacity: 25.480 Mbps (Accuracy: High) Downlink capacity: 137.768 Mbps (Accuracy: High) Uplink Responsiveness: Medium (385 RPM) (Accuracy: High) Downlink Responsiveness: Medium (376 RPM) (Accuracy: High) Idle Latency: 43.875 milli-seconds (Accuracy: High) Interface: en8 Uplink bytes transferred: 35.015 MB Downlink bytes transferred: 154.649 MB Uplink Flow count: 16 Downlink Flow count: 12 Start: 10/28/22, 5:12:30 PM End: 10/28/22, 5:12:54 PM OS Version: Version 13.0 (Build 22A380) Latencies (as monitored via PingPlotter) stay absolutely steady during = these tests, So unless my ISP coincidentally started having major service issues, = I=E2=80=99m scratching my head as to why. For contrast, the Ookla result is as follows: = https://www.speedtest.net/result/13865976456 with 15ms down, 18ms up = loaded latencies. Further machine details: MacBook Pro 16=E2=80=9D (2019) using a USB-C to = Ethernet adapter. I run with full ECN enabled: sudo sysctl -w net.inet.tcp.disable_tcp_heuristics=3D1=20 sudo sysctl -w net.inet.tcp.ecn_initiate_out=3D1 sudo sysctl -w net.inet.tcp.ecn_negotiate_in=3D1 and also with instant ack replies: sysctl net.inet.tcp.delayed_ack net.inet.tcp.delayed_ack: 0 I did try with delayed_ack=3D1, and the results were about the same. Thanks in advance, Jonathan Foulkes --Apple-Mail=_D2C203E4-FD6C-429F-81DB-2F46AE18676A Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 Hopefully, = Christoph can provide some details on the changes from the prior = networkQuality test, as we=E2=80=99re seeing some pretty large changes = in results for the latest RPM tests.

Where before = we=E2=80=99d see results in the >1,500 RPM (and multiple >2,000 = RPM results) for a DOCSIS 3.1 line with QoS enabled (180 down/35 up), it = now returns peak download RPM of ~600 and ~800 for = upload.

latest = results:

=3D=3D=3D=3D SUMMARY = =3D=3D=3D=3D
Uplink capacity: 25.480 Mbps (Accuracy: = High)
Downlink capacity: 137.768 Mbps (Accuracy: = High)
Uplink Responsiveness: Medium (385 RPM) (Accuracy: = High)
Downlink Responsiveness: Medium (376 RPM) (Accuracy: = High)
Idle Latency: 43.875 milli-seconds (Accuracy: = High)
Interface: en8
Uplink bytes transferred: = 35.015 MB
Downlink bytes transferred: 154.649 = MB
Uplink Flow count: 16
Downlink Flow count: = 12
Start: 10/28/22, 5:12:30 PM
End: 10/28/22, = 5:12:54 PM
OS Version: Version 13.0 (Build = 22A380)

Latencies (as monitored via = PingPlotter) stay absolutely steady during these = tests,

So unless my ISP coincidentally started = having major service issues, I=E2=80=99m scratching my head as to = why.

For contrast, the Ookla result is as = follows: https://www.speedtes= t.net/result/13865976456  with 15ms down, 18ms up loaded = latencies.

Further machine details: MacBook Pro = 16=E2=80=9D (2019) using a USB-C to Ethernet adapter.
I run = with full ECN enabled:

sudo sysctl -w = net.inet.tcp.disable_tcp_heuristics=3D1 

sudo sysctl -w net.inet.tcp.ecn_initiate_out=3D1

sudo sysctl -w = net.inet.tcp.ecn_negotiate_in=3D1

a= nd also with instant ack replies:

sysctl = net.inet.tcp.delayed_ack
net.inet.tcp.delayed_ack: = 0

I did try with delayed_ack=3D1, and the = results were about the same.

Thanks in = advance,

Jonathan = Foulkes

= --Apple-Mail=_D2C203E4-FD6C-429F-81DB-2F46AE18676A--