From mboxrd@z Thu Jan 1 00:00:00 1970 From: arno@natisbad.org (Arnaud Ebalard) Date: Tue, 12 Nov 2013 10:14:34 +0100 Subject: [BUG,REGRESSION?] 3.11.6+,3.12: GbE iface rate drops to few KB/s In-Reply-To: <20131112083633.GB10318@1wt.eu> (Willy Tarreau's message of "Tue, 12 Nov 2013 09:36:33 +0100") References: <8761s0cqhh.fsf@natisbad.org> <87y54u59zq.fsf@natisbad.org> <20131112083633.GB10318@1wt.eu> Message-ID: <87a9hagex1.fsf@natisbad.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi, Willy Tarreau writes: >> That been said, even if the driver is most probably not the only one to >> blame here (considering the result of bisect and current thread on >> netdev), I never managed to get the performance I have on my ReadyNAS >> Duo v2 (i.e. 108MB/s for a file served by an Apache) with a mvneta-based >> platform (RN102, RN104 or RN2120). Understanding why is on an already a >> long todo list. > > Yes I found that your original numbers were already quite low, Tests for the rgression were done w/ scp, and were hence limited by the crypto (16MB/s using arcfour128). But I also did some tests w/ a simple wget for a file served by Apache *before* the regression and I never got more than 60MB/s from what I recall. Can you beat that? > so it is also possible that you have a different problem (eg: faulty > switch or auto-negociation problem where the switch goes to half > duplex because the neta does not advertise nway or whatever) that is > emphasized by the latest changes Tested w/ back to back connections to the NAS from various hosts and through different switch. Never saturated the link. > I can confirm that I got this message from you on netdev so it should be OK > now. Good. Thanks for the info. a+