From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-out04.uio.no (mail-out04.uio.no [IPv6:2001:700:100:8210::76]) (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 E87D83CB37 for ; Mon, 19 Feb 2024 08:54:48 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ifi.uio.no; s=key2309; h=Message-Id:In-Reply-To:To:References:Date:Subject:Mime-Version: Content-Type:From:Sender:Reply-To:Cc:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=fkgnnwgqjWPnLmOfdVeFp+9jmiMSZrEj705ws8WTdXA=; b=QYDQZvJm8or5jyXGSJozcx08Ji aLtpwt/u3HUHWN6kN3Ptnx8I1B0AeMmVAuLcPXHWgoQHA/MTJ5KTNm8PrsO72x+Xrf+oco8iX4Jzc wRK88qTCKkGOfltveZQrDaKFroHsGTc2f8DWikPfNodeK5H3AlZTzmGC18u8wrPTjSJj/MrxVJoMp QPA5r2ZTfq1fDkbMtORgidL5HlbPy1lXyPW008jKmQ22s5gs7BffCphUXDzq+FJFZ0Ii40mdgb/XE z+N7fMpNTWYQj9DdRc26d3lOk3dIf/RIZpuDu06/yHy+ORuG4VKk/tQ2ssmGCeOoiVvRxvgV22xWF TgxV0Jig==; Received: from mail-mx10.uio.no ([129.240.10.27]) by mail-out04.uio.no with esmtps (TLS1.2) tls TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 (Exim 4.96.2) (envelope-from ) id 1rc468-006N0x-1x; Mon, 19 Feb 2024 14:54:20 +0100 Received: from collaborix.ifi.uio.no ([129.240.69.78] helo=smtpclient.apple) by mail-mx10.uio.no with esmtps (TLS1.2:ECDHE-ECDSA-AES256-GCM-SHA384:256) (Exim 4.96.2) (envelope-from ) id 1rc468-000DCA-0K; Mon, 19 Feb 2024 14:54:20 +0100 From: Michael Welzl Content-Type: multipart/alternative; boundary="Apple-Mail=_F4B22760-13B3-458B-ABD2-A398DF702044" Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3696.120.41.1.1\)) Date: Mon, 19 Feb 2024 14:54:19 +0100 References: <1BAA689A-D44E-4122-9AD8-25F6D024377E@ifi.uio.no> To: Linux Kernel Network Developers , bloat@lists.bufferbloat.net, BBR Development In-Reply-To: Message-Id: X-Mailer: Apple Mail (2.3696.120.41.1.1) X-UiO-SPF-Received: Received-SPF: neutral (mail-mx10.uio.no: 129.240.69.78 is neither permitted nor denied by domain of ifi.uio.no) client-ip=129.240.69.78; envelope-from=michawe@ifi.uio.no; helo=smtpclient.apple; X-UiO-Spam-info: not spam, SpamAssassin (score=-4.6, required=5.0, autolearn=disabled, HTML_MESSAGE=0.001, KHOP_HELO_FCRDNS=0.399, T_SCC_BODY_TEXT_LINE=-0.01, UIO_MAIL_IS_INTERNAL=-5) X-UiO-Scanned: 71A78910B788CE27DC9DB5E4E9C92DA60D8CBAA4 X-UiOonly: DBB8C0EF4B662C38E98561EFF0832128C73E04E2 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 13:54:49 -0000 --Apple-Mail=_F4B22760-13B3-458B-ABD2-A398DF702044 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 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 description should be mostly correct (I hope) and pretty complete, = and it also includes TSO / GSO. Comments are still welcome if anyone sees a mistake or something: = https://docs.google.com/document/d/1-uXnPDcVBKmg5krkG5wYBgaA2yLSFK_kZa7xGD= Wc7XU/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 myself, 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 free to forward this. Cheers, Michael > On 7 Feb 2024, at 21:13, Neal Cardwell wrote: >=20 > Thanks, Michael, for the nice doc! This is really nice for the Linux = networking community to have. I posted a few comments. >=20 > thanks, > neal >=20 >=20 --Apple-Mail=_F4B22760-13B3-458B-ABD2-A398DF702044 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 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 = description should be mostly correct (I hope) and pretty complete, and = it also includes TSO / GSO.

Comments are still welcome if anyone sees a = mistake or something:

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 myself, 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 free to forward = this.

Cheers,
Michael


On 7 Feb 2024, at 21:13, Neal Cardwell <ncardwell@google.com> wrote:

Thanks, Michael, for the nice doc! This is really nice for = the Linux networking community to have. I posted a = few comments.

thanks,
neal



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