From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: [BUG,REGRESSION?] 3.11.6+,3.12: GbE iface rate drops to few KB/s Date: Tue, 19 Nov 2013 10:31:50 -0800 Message-ID: <1384885910.8604.110.camel@edumazet-glaptop2.roam.corp.google.com> References: <87y54u59zq.fsf@natisbad.org> <20131112083633.GB10318@1wt.eu> <87a9hagex1.fsf@natisbad.org> <20131112100126.GB23981@1wt.eu> <87vbzxd473.fsf@natisbad.org> <20131113072257.GB10591@1wt.eu> <20131117141940.GA18569@1wt.eu> <1384710098.8604.58.camel@edumazet-glaptop2.roam.corp.google.com> <87li0kkhzx.fsf@natisbad.org> <1384869194.8604.92.camel@edumazet-glaptop2.roam.corp.google.com> <20131119174323.GH913@1wt.eu> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: Arnaud Ebalard , Thomas Petazzoni , netdev@vger.kernel.org, edumazet@google.com, Cong Wang , linux-arm-kernel@lists.infradead.org, Florian Fainelli , simon.guinot@sequanux.org To: Willy Tarreau Return-path: Received: from mail-yh0-f54.google.com ([209.85.213.54]:51102 "EHLO mail-yh0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751307Ab3KSSby (ORCPT ); Tue, 19 Nov 2013 13:31:54 -0500 Received: by mail-yh0-f54.google.com with SMTP id a41so3745043yho.13 for ; Tue, 19 Nov 2013 10:31:53 -0800 (PST) In-Reply-To: <20131119174323.GH913@1wt.eu> Sender: netdev-owner@vger.kernel.org List-ID: On Tue, 2013-11-19 at 18:43 +0100, Willy Tarreau wrote: > - #define MVNETA_TX_DONE_TIMER_PERIOD 10 > + #define MVNETA_TX_DONE_TIMER_PERIOD (1000/HZ) > I suggested this in a prior mail : #define MVNETA_TX_DONE_TIMER_PERIOD 1 But apparently it was triggering strange crashes... > This can only have any effect if you run at 250 or 1000 Hz, but not at 100 > of course. It should reduce the time to first IRQ.