From mboxrd@z Thu Jan 1 00:00:00 1970 From: xiyou.wangcong@gmail.com (Cong Wang) Date: Tue, 12 Nov 2013 06:48:59 +0000 (UTC) Subject: [BUG,REGRESSION?] 3.11.6+,3.12: GbE iface rate drops to few KB/s References: <8761s0cqhh.fsf@natisbad.org> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Sun, 10 Nov 2013 at 13:53 GMT, Arnaud Ebalard wrote: > Hi, > > I decided to upgrade the kernel on one of my ReadyNAS 102 from 3.11.1 to > 3.11.7. The device is based on Marvell Armada 370 SoC and uses mvneta > driver. Mine runs Debian armel unstable but I can confirm the issue also > happens on a debian harmhf unstable. > [...] > > Then, knowing that, I started a git bisect session on stable tree to end > up with the following suspects. I failed to go any further to a single > commit, due to crashes, but I could recompile a kernel w/ debug info and > report what I get if neeeded. > > commit dc0791aee672 tcp: do not forget FIN in tcp_shifted_skb() [bad] > commit 18ddf5127c9f tcp: must unclone packets before mangling them > commit 80bd5d8968d8 tcp: TSQ can use a dynamic limit > commit dbeb18b22197 tcp: TSO packets automatic sizing > commit 50704410d014 Linux 3.11.6 [good] > This regression is probably introduced the last TSQ commit, Eric has a patch for mvneta in the other thread: http://article.gmane.org/gmane.linux.network/290359