From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm1-x329.google.com (mail-wm1-x329.google.com [IPv6:2a00:1450:4864:20::329]) (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 1B0C83CB37 for ; Mon, 19 Feb 2024 09:02:38 -0500 (EST) Received: by mail-wm1-x329.google.com with SMTP id 5b1f17b1804b1-4126126f4f4so10402825e9.0 for ; Mon, 19 Feb 2024 06:02:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1708351357; x=1708956157; darn=lists.bufferbloat.net; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=wxQ2G2ZSMlMlBUzvWD0qotOMWCkfxBUg6tFE0Q+NBAg=; b=DrCK0sPvWsCBrIqPWpD5ZK4SMjOmBRV9204O896o6JzB8fjXjhgQgEdvGLE+ubIYfM id0O3L09oWdKwW/lS9UyNcyqRGhWrYlKsRsJrg3sQ7RGm0g73VrmaYgiF+VIItireEPd GZlozJCBB3TRBGUI9HGpClOQPXAVZ/qBOVSRc+qu6T+o8bro6amJbeRhGmkfaO5KOcsE /ElA8bdBlpEmU0TS15j5x3JSH2T98vzwZtzzhMHoFH1fgKsNJ9bL3empwfcefzF0+1uC LEs3O2EsU45TfUmLbwd1oesrbI2YWvcA92FO18DshuHcA9+EhElMNpY0IRzkzcNI1IYf 0ryA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1708351357; x=1708956157; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=wxQ2G2ZSMlMlBUzvWD0qotOMWCkfxBUg6tFE0Q+NBAg=; b=Cf2Qw0qTH6RrRS6LRt0sBspjQ62RzFdIZj7Co9swZmlRiRp+55QTgpLmLCgcO6caYj bcETjkq0m1lXLyfJ4brMhotLaxW/smCnJ3WBNHJVfzGobqcNXCpzs2Kmwjix5/WoX7TG ER7dVFOrlSloGMVS5EMGnD9GYGqREJqKiiCiQm00W4c1EKypIkibvCDhrCLhh9RCNnQo Zk4d1uqBh/h/FMCWhDFr2YhVt2P5i4kpwFwZ/kUw70yNd4CtdzsqQEYzFQ6siyR99/Kx ApS1eQj1r41jJbVbMB/2po8ujq9HPl9wifR/J9yj9UKUB6sXajj0Qy0Nfm3AiXnhTMSV q/iw== X-Forwarded-Encrypted: i=1; AJvYcCVakU6SVW2/q06R/bKyOYITbcEvNJVcoM2yiNIiQi1rWK3J6eHBUJS5H8o2ws8qLbN5ALYfni8SiPHubA8cE6i3WzOYnqZiAk2ckwM= X-Gm-Message-State: AOJu0YyzQ0TKiAPmlMt83XiVHGxiHNQaqj+b87If/LGO2rXME2FgUQIU TBCXbpNqYkEbT4Pas5PSpTHCJJcwztyyq8ibW3kpEzZ9qn+BrZIi4Ao467W49jYTi7uSy8lINqi NoX2DHDOWanUTGHVKqA9LX1aloZI= X-Google-Smtp-Source: AGHT+IG0gcUCtxL7Z4gNd7cfpII0Xf8aXmZ7ZkqInCUqEXJBx9c/1UNNdBvAZYqXWTz/r/+U2EdnhPJLIk8MpXvKaYI= X-Received: by 2002:a05:600c:4f49:b0:412:5652:1395 with SMTP id m9-20020a05600c4f4900b0041256521395mr4704433wmq.25.1708351356405; Mon, 19 Feb 2024 06:02:36 -0800 (PST) MIME-Version: 1.0 References: <1BAA689A-D44E-4122-9AD8-25F6D024377E@ifi.uio.no> In-Reply-To: From: Dave Taht Date: Mon, 19 Feb 2024 09:02:24 -0500 Message-ID: To: Michael Welzl Cc: Linux Kernel Network Developers , bloat@lists.bufferbloat.net, BBR Development Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: Re: [Bloat] Trying to *really* understand Linux pacing 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: Mon, 19 Feb 2024 14:02:38 -0000 also your investigation showed me a probably bug in cake's gso-splitting. thanks! However, after capturing the how as you just have, deeper understanding the effects on the network itself of this stuff would be great. On Mon, Feb 19, 2024 at 8:54=E2=80=AFAM Michael Welzl via Bloat wrote: > > Dear all, > > I=E2=80=99m now finally done updating the document, based on inputs from = various folks in this round - most notably Neal, who went to great lengths = to help me understand what I saw in my tests (thank you!). Now the descrip= tion should be mostly correct (I hope) and pretty complete, and it also inc= ludes TSO / GSO. > > Comments are still welcome if anyone sees a mistake or something: > https://docs.google.com/document/d/1-uXnPDcVBKmg5krkG5wYBgaA2yLSFK_kZa7xG= DWc7XU/edit?usp=3Dsharing > > Several people have in the meanwhile told me that this is useful for the = community. I=E2=80=99m glad to hear that! I really only started this for m= yself, just to understand what=E2=80=99s going on. Now I believe I do=E2=80= =A6 but hey, if this helps others too, this is great! So, please feel fre= e to forward this. > > Cheers, > Michael > > > On 7 Feb 2024, at 21:13, Neal Cardwell wrote: > > Thanks, Michael, for the nice doc! This is really nice for the Linux netw= orking community to have. I posted a few comments. > > thanks, > neal > > > > _______________________________________________ > Bloat mailing list > Bloat@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/bloat --=20 40 years of net history, a couple songs: https://www.youtube.com/watch?v=3DD9RGX6QFm5E Dave T=C3=A4ht CSO, LibreQos