From owner-freebsd-net@FreeBSD.ORG Wed Oct 1 23:53:50 2014 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 116A8428; Wed, 1 Oct 2014 23:53:50 +0000 (UTC) Received: from mail-wi0-x22c.google.com (mail-wi0-x22c.google.com [IPv6:2a00:1450:400c:c05::22c]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 73C7DF1; Wed, 1 Oct 2014 23:53:49 +0000 (UTC) Received: by mail-wi0-f172.google.com with SMTP id n3so2276919wiv.11 for ; Wed, 01 Oct 2014 16:53:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=4yH8cX+DmN6rHeCJLapCjAiUe20ulW/7vpXowvU5Gmw=; b=ForhODKcqpC7ibnjQ0n9iK07vd1Sng27eAomy4VRuQ5gpPfKEhB/QUP++pMCzMnpqB p1XgDsa02Zy7a5yuGlBDczu3KENGiRbyHn+2TmzVafn5Y1S4l6XeOAqBiwtG8DAzQzVD JpwK1ukzNNNvcYlB4aa12t/pM3gyGCtTgfl2c+4WbL+BBiSlh+h++xeN7F647D5OV8iU uyAMFD7vTWSJ9KoBlRYebpGT9Poi3XOwVbnT22ph9f7Kr47E/0Et2jJlbCqgn2mkgod2 Sp7tXogDnCU7Jlw9b21jUBBFd0YZX+rigiIOjQiHo1eTXsdc1U2EVYfarjZKAkYDNDy3 e2uA== MIME-Version: 1.0 X-Received: by 10.180.107.100 with SMTP id hb4mr397351wib.59.1412207627783; Wed, 01 Oct 2014 16:53:47 -0700 (PDT) Sender: adrian.chadd@gmail.com Received: by 10.216.106.136 with HTTP; Wed, 1 Oct 2014 16:53:47 -0700 (PDT) In-Reply-To: <20141001235312.GA14593@onelab2.iet.unipi.it> References: <20141001203223.GA12122@onelab2.iet.unipi.it> <20141001234926.GC13187@onelab2.iet.unipi.it> <20141001235312.GA14593@onelab2.iet.unipi.it> Date: Wed, 1 Oct 2014 16:53:47 -0700 X-Google-Sender-Auth: iZtP7aHMxEGuCVgIFRVeZXRnpm0 Message-ID: Subject: Re: individual queue blocking entire rx unit on ixgbe (Re: How do I balance bandwidth over several virtual NICs?) From: Adrian Chadd To: Luigi Rizzo Content-Type: text/plain; charset=UTF-8 Cc: "freebsd-net@freebsd.org" , Elof Ofel , "Alexander V. Chernikov" , Jack Vogel X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 01 Oct 2014 23:53:50 -0000 On 1 October 2014 16:53, Luigi Rizzo wrote: > On Wed, Oct 01, 2014 at 04:47:32PM -0700, Adrian Chadd wrote: >> On 1 October 2014 16:49, Luigi Rizzo wrote: >> > On Wed, Oct 01, 2014 at 04:42:58PM -0700, Adrian Chadd wrote: >> >> Yeah, just grab the diffs that I committed to ixgbe and try it out. >> >> >> >> The flowdirector initialisation is buggy. :) >> > >> > ok but i don't think it is related, see my previous email. >> >> I saw - but the verisign people also saw queue stalls as well. >> >> So is setting DROP_EN unconditionally fixing it for you? > > yes so it seems. Interesting. That's a pretty small window to get it wrong in. Would you file a PR about it? We'll try to get this fixed soon. (Same for igb..) Thanks! -a