From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg0-x241.google.com (mail-pg0-x241.google.com [IPv6:2607:f8b0:400e:c05::241]) (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 7FF2B3B2A0 for ; Sat, 3 Dec 2016 18:02:43 -0500 (EST) Received: by mail-pg0-x241.google.com with SMTP id e9so11797179pgc.1 for ; Sat, 03 Dec 2016 15:02:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:subject:from:to:cc:date:in-reply-to:references :mime-version:content-transfer-encoding; bh=Cf6x4OI5XxnHOkbpkWPs7cHl1N1PKsovPG5/Wj3oRco=; b=yTxGuMv/60+KMGgJvIpitruhVUPXp9sXamsoE3Y3F7htP3XU3jnCsERYwqONvhcvO3 8KtCI6zaZ4gFXvvji1Vlm2doz5vRFX0IMDIYto83q00CpsjKnabjPlZ9b/hI0sbGVAY7 RK56GiQ23skUDz603F1xWrN6E/RPn51qQT44NodZ/xA+cU/Eo8EcProrlj2s2+7BBdXT prPBdzBrYVUnUKvOLiEqghbeJ6ajqGkq/0PHMrMwRPD7v1VaQqqznv03czgnuQ7KuVsF kZitWShHQA0146wI/dNZdgOq7/sXle83dcYbGcO5TjUMoK3IqQpelSO2t3oADVruUt6L 4iSg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:message-id:subject:from:to:cc:date:in-reply-to :references:mime-version:content-transfer-encoding; bh=Cf6x4OI5XxnHOkbpkWPs7cHl1N1PKsovPG5/Wj3oRco=; b=B1dBmJBnkI4/ojZ7VOPIh4uFVx1WZQugyAbkrmq61V7/VU+htA1Wvnl0uh+6g7SNSq iRcBB209GyrOYp04xMvoFssXkjg/fGoUqkYa0HOM62JrTPOX1i1hCL5LcKfut8BMh0TU zxosjAOuKDARkKMq7Jd7kcb42XBV7f5ACQFSHGU0Eied5EsxsfTu56PrfDcoWJUPVJOj AbMQ5gjys9oD1u13z5P08tyDuH8Dx5y9Nhy69uMEcrHIgWmIO2WUh1TiMQ5/kDXVUMyZ vRtj+hGwpMSUiy/zdViKtw6PMAmxPr0pJHRq4+ZmZRwAZ8Zn6GCr5yErY3hYCG7lNhEo 8alA== X-Gm-Message-State: AKaTC02SZp6CGP3P+W0+jcLzlJfN0aNtIJrFa2KKEDXRgjICZHBEhW0zInjmG4czijbGjw== X-Received: by 10.84.194.37 with SMTP id g34mr110562381pld.36.1480806162761; Sat, 03 Dec 2016 15:02:42 -0800 (PST) Received: from [172.19.250.57] ([172.19.250.57]) by smtp.googlemail.com with ESMTPSA id 89sm17016375pfi.70.2016.12.03.15.02.41 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 03 Dec 2016 15:02:42 -0800 (PST) Message-ID: <1480806161.18162.429.camel@edumazet-glaptop3.roam.corp.google.com> From: Eric Dumazet To: "Steinar H. Gunderson" Cc: Jonathan Morton , Neal Cardwell , "aqm@ietf.org" , bloat Date: Sat, 03 Dec 2016 15:02:41 -0800 In-Reply-To: <1480805737.18162.425.camel@edumazet-glaptop3.roam.corp.google.com> References: <20161202224006.GA5065@sesse.net> <1480721486.18162.392.camel@edumazet-glaptop3.roam.corp.google.com> <20161203191353.GA972@sesse.net> <1480796415.18162.408.camel@edumazet-glaptop3.roam.corp.google.com> <9A821B94-143B-446F-8852-2EB0158DD57C@gmail.com> <1480799260.18162.418.camel@edumazet-glaptop3.roam.corp.google.com> <20161203213428.GB38041@sesse.net> <1480801837.18162.419.camel@edumazet-glaptop3.roam.corp.google.com> <20161203221338.GC38041@sesse.net> <1480805737.18162.425.camel@edumazet-glaptop3.roam.corp.google.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.10.4-0ubuntu2 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: Re: [Bloat] TCP BBR paper is now generally available 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: Sat, 03 Dec 2016 23:02:43 -0000 On Sat, 2016-12-03 at 14:55 -0800, Eric Dumazet wrote: > Perfect. > > Note that starting from linux-4.4, e1000e gets gro_flush_timeout that > would help this precise workload Also it appears the sender uses a lot of relatively small segments (8220 bytes at a time), with PSH, so GRO wont be able to help. I wonder how these PSH are forced.