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Date: Wed, 13 Jan 2016 10:38:25 -0500 (EST) From: David Miller <davem@...emloft.net> To: edumazet@...gle.com Cc: hans.westgaard.ry@...cle.com, hannes@...essinduktion.org, David.Laight@...lab.com, kuznet@....inr.ac.ru, jmorris@...ei.org, yoshfuji@...ux-ipv6.org, kaber@...sh.net, ast@...mgrid.com, jiri@...lanox.com, daniel@...earbox.net, nicolas.dichtel@...nd.com, ebiederm@...ssion.com, noureddine@...sta.com, jarod@...hat.com, makita.toshiaki@....ntt.co.jp, ja@....bg, ying.xue@...driver.com, kraig@...gle.com, mgorman@...hsingularity.net, edjee@...gle.com, julia.lawall@...6.fr, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, haakon.bugge@...cle.com, knut.omang@...cle.com, wei.lin.guay@...cle.com, santosh.shilimkar@...cle.com, yuval.shaia@...cle.com Subject: Re: [PATCH] net: add per device sg_max_frags for skb From: Eric Dumazet <edumazet@...gle.com> Date: Wed, 13 Jan 2016 06:19:11 -0800 > 2) TCP stack has coalescing support. write(2) or sendmsg(2) should > append data into the last skb in write queue, and still use 32 KB > frags. Another way to get pathological SKBs is to do lots of tiny sendpage() calls over discontiguous areas of the file.
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