From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk0-x22a.google.com (mail-qk0-x22a.google.com [IPv6:2607:f8b0:400d:c09::22a]) (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 CB1783B29E for ; Sun, 1 Jul 2018 20:05:51 -0400 (EDT) Received: by mail-qk0-x22a.google.com with SMTP id b129-v6so7841693qke.7 for ; Sun, 01 Jul 2018 17:05:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=D+w2CD5m85PainD/RO1sYAnJtCgGccJ3d1+H/9HSotM=; b=Ob8Bw/7Fw9f/DDxdDPMeIYf6rJPcNjUnJ5/J1NeAXXLWsEvPo87l1h3hUX4Gd3T6KF i9fejc4R9zWPf2qatxXX+Ar8naFRSvGS8cQGedolaaWQUiktOIdM31ouPdLosfNMMtWY hy7vKsdlr7LHWuFicQW0gf0lI67hU5GBe8RR6KNu8EBOvaL5WkdeTB6doQmcCQHZgTMr zzQmvuCqomOYjRmlqfpGIN34dluFp8Ql4lai6VhuUPgp9ijgLMrlU2wel//zi3nBV4rp 0jpiIVgFrq+sHfDTZp42TypiED9DxwRqU+6oZrYg0F5boFKT4g633lpNAppS49Xh0oYp OStg== 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:content-transfer-encoding; bh=D+w2CD5m85PainD/RO1sYAnJtCgGccJ3d1+H/9HSotM=; b=pR2Mm0/lP3wo7zP6ICEwOtWgF6SwDcuk+B4nF/2NImTufoyDVuvt2fdRV5j6NvD9As NYpKmw4DzPooRGfC7+Pv8SisiMb8nmCA7LCH/OyApEv8RGKtgx7YdXUnOgBLZUbW587I DUNMNVMK5Ea1uiLGsRPBSRkvU0bq8g9NJ5pumQyfjboLfstV/QkldWniNPkjqkW4dYwz gbUDKa6sYO65kmWvroq2CeZms7BH5Li5urTMFtfIiothVRdEGq6BQMpCJjA/l93uJ302 Hol8/C0mKLvUijTfpxMeLLhaxtX9Zsy7+pOwXgX/kKGdh6+zi+bKg41C/pFQXJlC58gG jxWQ== X-Gm-Message-State: APt69E0LjpPmATpz8G7deE0Nyrk9ayLmWh+DTAXjwu3D14XkiVg12cY9 Q6araAQW4M4SHc6CQsXggW2sc69OUwSgX1vAhDM= X-Google-Smtp-Source: AAOMgpfXPl9QljJng7PKdCgDzLIGONd/dYP26teIEiT4y8jPvKpgc8epuhvOE+x8DBsPazdenAkuX/UkFVrBtkoecII= X-Received: by 2002:a37:210a:: with SMTP id h10-v6mr19922159qkh.263.1530489951413; Sun, 01 Jul 2018 17:05:51 -0700 (PDT) MIME-Version: 1.0 References: <6DF9A5E0-EFD5-4519-9889-BC0A7B9BD48E@darbyshire-bryant.me.uk> <1A8BA286-6B31-4581-86C9-6855AC28C245@heistp.net> <673EAD3F-AB09-4B90-88BB-5DCE0BD65534@heistp.net> <6FE8D434-01BE-41A1-BD6B-EFFD67AC8784@heistp.net> <94C9790F-E9BC-4D59-9845-17C305E4B910@darbyshire-bryant.me.uk> In-Reply-To: From: Dave Taht Date: Sun, 1 Jul 2018 17:05:40 -0700 Message-ID: To: Kevin Darbyshire-Bryant Cc: Pete Heist , Cake List Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: Re: [Cake] Cake on openwrt - falling behind X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 02 Jul 2018 00:05:51 -0000 On Sun, Jul 1, 2018 at 4:55 PM Dave Taht wrote: > > Well, I took a look at that cap. It does look like what is supplied is > truncated by quite a few bytes. I am under the impression that > openwrt/lede use a mini library for libmnl (what does tc link to?) > that may well be the source of this bug. Meh. I think you should ignore my first statement > > One thing that might help in peering at the raw data this way would be > to send const patterns > for each value like F0F0F0F0F0F0 alternating with E0E0E0E0E0... (full > pattern for 32 bit or 64 bit) to see what shows up. And pursue the second. > On Sun, Jul 1, 2018 at 12:41 PM Kevin Darbyshire-Bryant via Cake > wrote: > > > > > > > > > > ---------- Forwarded message ---------- > > From: Kevin Darbyshire-Bryant > > To: Pete Heist > > Cc: Cake List > > Bcc: > > Date: Sun, 1 Jul 2018 19:41:28 +0000 > > Subject: Re: [Cake] Cake on openwrt - falling behind > > > > > > > On 1 Jul 2018, at 17:54, Pete Heist wrote: > > > > > > > > > > > >> There=E2=80=99s a =E2=80=98kmon-nlmon=E2=80=99 that allows you to cr= eate a virtual network interface for the netlink packets and thus capture (= tcpdump) and export to wireshark for dissection. I had a look at that a fe= w weeks ago but my head exploded and have only just recovered enough to sta= rt looking at this problem again=E2=80=A6. > > > > > > Cool, I might eventually get to that point. My head also approached s= ome thermal limits last night with this unfamiliar build system but it=E2= =80=99s getting a little better=E2=80=A6 :) > > > > For those who fancy dissecting some netlink packets, see attached :-) > > > > > > > > > > > > ---------- Forwarded message ---------- > > From: Kevin Darbyshire-Bryant via Cake > > To: Pete Heist > > Cc: Cake List > > Bcc: > > Date: Sun, 01 Jul 2018 12:41:33 -0700 (PDT) > > Subject: Re: [Cake] Cake on openwrt - falling behind > > _______________________________________________ > > Cake mailing list > > Cake@lists.bufferbloat.net > > https://lists.bufferbloat.net/listinfo/cake > > > > -- > > Dave T=C3=A4ht > CEO, TekLibre, LLC > http://www.teklibre.com > Tel: 1-669-226-2619 --=20 Dave T=C3=A4ht CEO, TekLibre, LLC http://www.teklibre.com Tel: 1-669-226-2619