From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-il1-x132.google.com (mail-il1-x132.google.com [IPv6:2607:f8b0:4864:20::132]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 57C243B29D for ; Wed, 16 Jun 2021 23:00:17 -0400 (EDT) Received: by mail-il1-x132.google.com with SMTP id h3so4103503ilc.9 for ; Wed, 16 Jun 2021 20:00:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nathan.io; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=qugFC/tKsfWM0v0Ubfx5lwvM3kea2+rs99Ob03wRyuI=; b=oMVRrgQbgRSdu7KHFyBQpzFFWAKlnkrZLnqaOeOLfScil2trNYUw9j5x8fVekx4qRI D+Qe6DqMWPiymaugDRDz91u5e09lUiDee0TiJP7wV3MftErcZYKicmVjKuXS3Oc5F1rl vZM36V1aT3wOHaOHGYG1+aHcoJuStaYnnMB2zHL/idoqb4qFAJ2S2rwsDUOlAsjNpxRq Cou9Et5mIlIh8YsASKfHhNztCx2mF7ywglHn3XwQpD9apG2INEgIfRDh6atDkJpGBiWo xvhZPFkPoB8WaY2TD0zU6RNmt/lveBmrFoOiFNpZQS3J/Xgi9mFxBtM6ammcKI6+LNY3 epfw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=qugFC/tKsfWM0v0Ubfx5lwvM3kea2+rs99Ob03wRyuI=; b=mob314WocdhRTBNxxpgmvR437Bt1+QcwNv1WZ5s6o4m5fFj0+Ffjy4SyRzrAuWnh/V fHtb+WfK3Ok3j3laMmyhUp7tOlmca7YzRj0t6irxpAlLtKBG9dQAjWQL1mZ75SC6Igl3 UlmW+KSKm1fWx8mQ9ae/DIzvLmYUtbCQZ0JbFRvWBEQB4Q+G5BwjH8vUa+VLGhs05/ze JX0dZyt9S19JKrCaSqPkmFE485UqwPoSt3ZuyyTx4T/uzeM57RZ+tc2M+ydEnpik5dpi j7cIgTqUMGn3d0uSms/IxXwoBy6d4tfxchjlnsnPzdDl1pbyKFkK5OOx3rpJJF7jpbih tpnw== X-Gm-Message-State: AOAM533zWdmQEPvmjxB3WzXIIk5/8Zh09uYRCoXy+Xl6QkTHycH0dNNX TP/ce+lFleWKBkOOgGewoaE1exX1Pk4Xm+Yxoj6LYmFkg/UL1AsX X-Google-Smtp-Source: ABdhPJw9ODFrnh8/RnVe1UjTgmQvJZkM6nOEFEE1PZrQjW7Fq/FMVHEpo5cG2H5WVADUfxDLfGHb7NaXnqCEgGHyxEs= X-Received: by 2002:a05:6e02:1ca5:: with SMTP id x5mr1716069ill.139.1623898816597; Wed, 16 Jun 2021 20:00:16 -0700 (PDT) MIME-Version: 1.0 References: <20210614120705.31634f9a@spidey.rellim.com> <20210614131831.6a18b0ec@spidey.rellim.com> <20210614133804.11bf0f0b@spidey.rellim.com> In-Reply-To: <20210614133804.11bf0f0b@spidey.rellim.com> From: Nathan Owens Date: Wed, 16 Jun 2021 20:00:05 -0700 Message-ID: To: "Gary E. Miller" Cc: starlink@lists.bufferbloat.net Content-Type: multipart/alternative; boundary="0000000000001d653d05c4ed684e" Subject: Re: [Starlink] GPS Dongle? X-BeenThere: starlink@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Starlink has bufferbloat. Bad." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Jun 2021 03:00:17 -0000 --0000000000001d653d05c4ed684e Content-Type: text/plain; charset="UTF-8" Hey Gary, Got this running: pi@realtimepi:~ $ ntpq -crv -pn associd=0 status=0115 leap_none, sync_pps, 1 event, clock_sync, version="ntpd 4.2.8p12@1.3728-o (1)", processor="armv7l", system="Linux/4.19.71-rt24-v7l", leap=00, stratum=1, precision=-20, rootdelay=0.000, rootdisp=1.195, refid=PPS, reftime=e4753908.36ea5b4a Wed, Jun 16 2021 19:59:20.214, clock=e4753915.668e763d Wed, Jun 16 2021 19:59:33.400, peer=23018, tc=4, mintc=3, offset=0.298251, frequency=-22.915, sys_jitter=0.149930, clk_jitter=1.980, clk_wander=0.051 remote refid st t when poll reach delay offset jitter ============================================================================== o127.127.22.0 .PPS. 0 l 13 16 377 0.000 0.298 0.150 *216.239.35.12 .GOOG. 1 u 36 64 377 61.574 -4.184 24.605 Let me know how it looks, or if there's anything I could improve! On Mon, Jun 14, 2021 at 1:38 PM Gary E. Miller wrote: > Yo Ricky! > > On Mon, 14 Jun 2021 13:25:26 -0700 > Ricky Mok wrote: > > > Attached a paper on this topic from my old colleagues. > > Not bad. It skipped the important details of how they configured their > RasPi's. It also made the very common mistake of over smoothing their > ADEV measurements. Lacking a few now standard metrics. Otherwise > sound. > > It is possible to do a little better now. > > RGDS > GARY > --------------------------------------------------------------------------- > Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 > gem@rellim.com Tel:+1 541 382 8588 > > Veritas liberabit vos. -- Quid est veritas? > "If you can't measure it, you can't improve it." - Lord Kelvin > _______________________________________________ > Starlink mailing list > Starlink@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/starlink > --0000000000001d653d05c4ed684e Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hey Gary,

Got this running: =

pi@realtimepi:~ $ ntpq -crv -pn
associd=3D= 0 status=3D0115 leap_none, sync_pps, 1 event, clock_sync,
version=3D&quo= t;ntpd 4.2.8p12@1.3728-o (1)", processor=3D"armv7l",
syst= em=3D"Linux/4.19.71-rt24-v7l", leap=3D00, stratum=3D1, precision= =3D-20,
rootdelay=3D0.000, rootdisp=3D1.195, refid=3DPPS,
reftime=3De= 4753908.36ea5b4a =C2=A0Wed, Jun 16 2021 19:59:20.214,
clock=3De4753915.6= 68e763d =C2=A0Wed, Jun 16 2021 19:59:33.400, peer=3D23018, tc=3D4,
mintc= =3D3, offset=3D0.298251, frequency=3D-22.915, sys_jitter=3D0.149930,
clk= _jitter=3D1.980, clk_wander=3D0.051

=C2=A0 =C2=A0 =C2=A0remote =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 refid =C2=A0 =C2=A0 =C2=A0st t when poll re= ach =C2=A0 delay =C2=A0 offset =C2=A0jitter
=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
o127.127.22.0 = =C2=A0 =C2=A0.PPS. =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A00 l =C2=A0 13 = =C2=A0 16 =C2=A0377 =C2=A0 =C2=A00.000 =C2=A0 =C2=A00.298 =C2=A0 0.150
*= 216.239.35.12 =C2=A0 .GOOG. =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 1 u =C2=A0 3= 6 =C2=A0 64 =C2=A0377 =C2=A0 61.574 =C2=A0 -4.184 =C2=A024.605

Let me know how it looks, or if there's anything I could improve!=

On Mon, Jun 14, 2021 at 1:38 PM Gary E. Miller <gem@rellim.com> wrote:
Yo Ricky!

On Mon, 14 Jun 2021 13:25:26 -0700
Ricky Mok <cskpmo= k@caida.org> wrote:

> Attached a paper on this topic from my old colleagues.

Not bad.=C2=A0 It skipped the important details of how they configured thei= r
RasPi's.=C2=A0 It also made the very common mistake of over smoothing t= heir
ADEV measurements.=C2=A0 Lacking a few now standard metrics.=C2=A0 Otherwis= e
sound.

It is possible to do a little better now.

RGDS
GARY
---------------------------------------------------------------------------=
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
=C2=A0 =C2=A0 =C2=A0 =C2=A0 gem@rellim.com=C2=A0 Tel:+1 541 382 8588

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Veritas liberabit vos. -- Quid es= t veritas?
=C2=A0 =C2=A0 "If you can't measure it, you can't improve it.&= quot; - Lord Kelvin
_______________________________________________
Starlink mailing list
Starlin= k@lists.bufferbloat.net
https://lists.bufferbloat.net/listinfo/starlink
--0000000000001d653d05c4ed684e--