From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi0-x230.google.com (mail-oi0-x230.google.com [IPv6:2607:f8b0:4003:c06::230]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id A165721F34A; Sun, 29 Nov 2015 03:18:51 -0800 (PST) Received: by oies6 with SMTP id s6so82036766oie.1; Sun, 29 Nov 2015 03:18:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; bh=VqVQtrn1Bl16mraIWyjwGOaq8j5on/L2H8YiLEBzhMc=; b=iV/jgUWvgWQbQEwxVzk9EPE+PwJzv+XjFxJlylhRdowp16nFBr4xXlNfVF6lZFNL+U STdnNz+jYwbqvF9nbUaqi2kD4r6dWAbbgbV/rWP2LZ+SeKkyF/Qz4uOBEKPsI+3dJRgs IrlBGXUFnScBc/xSeN0JKkSfVBh4TVmU98FpkfYEk1qVSXxhDm4wkr48SW7Lmty2Yrvl SUc9cEVucrHGB66brYtvbZEtjsQD2o36yHEZQnJ+92eYSm2VxN7IWr4wgGmUuvD1SCnv sYSrARzcgfc0guALv9VwBxKnkDC/6fCzViUMSLBH4ERlib3v1ZTxhMVQMA7quZJnha84 cHvg== MIME-Version: 1.0 X-Received: by 10.202.64.198 with SMTP id n189mr38631733oia.139.1448795930654; Sun, 29 Nov 2015 03:18:50 -0800 (PST) Received: by 10.202.187.3 with HTTP; Sun, 29 Nov 2015 03:18:50 -0800 (PST) In-Reply-To: References: Date: Sun, 29 Nov 2015 12:18:50 +0100 Message-ID: From: Dave Taht To: Imre Kaloz Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Cc: cake@lists.bufferbloat.net, "cerowrt-devel@lists.bufferbloat.net" Subject: Re: [Cerowrt-devel] linksys ac1200 network bug X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 29 Nov 2015 11:19:13 -0000 On Sat, Nov 28, 2015 at 10:19 PM, Imre Kaloz wrote: > Did you see https://lkml.org/lkml/2015/11/27/325 ? I'll try to find time = to > integrate a newer kernel and that patchset as well as > https://lkml.org/lkml/2015/11/22/9 , > http://lkml.iu.edu/hypermail/linux/kernel/1511.0/04354.html and > http://lists.openwall.net/netdev/2015/09/25/151 Nope, missed those. Thx! At one level I hate it when I test something that is out of date, but losing a day of testing to only being a day out of date, is particularly annoying. :( As I noted, I'm in love with those routing cache lookup fixes in 4.x.... I have a (bad) patch for BQL for this driver too that could probably be fixed unless it landed already? (I am not sure how you do xmit_more without BQL) I will go back to testing on 4.1 on the archer for a while. The steps to reproduce the bug I saw is merely try running two or more copies of netperf to the router. > > > Imre > > > On Sat, 28 Nov 2015 15:41:17 +0100, Dave Taht wrote= : > >> I went for a test drive of openwrt DESIGNATED DRIVER (Bleeding Edge, >> r47665) today. >> >> A) I bricked the archer c7 v2. No idea why. >> >> B) I got a sorta working linksys 1200ac build. >> >> The bad news: Any attempt to run 2 or more copies of netperf's >> netserver on the 1200ac router with the default qdiscs (mq + >> fq_codel), at line (gbit) rate, result in it locking up *for any other >> traffic, including ping* until the first netperf is more or less >> complete. I fear the underlying driver is frightfully overbuffered, >> or has another problem. >> >> http://snapon.cs.kau.se/~d/archer-c7/onenetperflockout.png >> >> (needs BQL, too) >> >> The still bad news: cake works in both directions for a while longer, >> then goes boom similarly. >> >> The somewhat good news: >> >> cake "shaped" to 900mbit on inbound and outbound to the router - does >> not lock up the router. It merely runs out of cpu, but still does >> manage quite respectable throughput in both directions while doing >> so. Note, I did not say "latency". >> >> http://snapon.cs.kau.se/~d/archer-c7/encouraged.png >> >> As usual there is some flent data in that dir if you want to draw your >> own plots. >> >> I was not in a position to actually test traffic through the router >> (because I had the archer setup to do that) >> >> I wouldn't draw any conclusions from this. Well, a safe conclusion, >> is: don't install this build. >> >> On Sat, Nov 28, 2015 at 11:41 AM, Dave Taht wrote: >>> >>> Trying to do my first openwrt build in a while. >>> >>> make[5]: Leaving directory >>> >>> '/home/cero4/src/archer-c7/build_dir/target-mips_34kc_musl-1.1.11/dante= -1.2.2' >>> Makefile:349: recipe for target 'all' failed >>> >>> I checked: the package "dante" is not installed. Nor can I figure out >>> what package is arbitrarily requiring it. >>> >>> I truly am in hell. >> >> >> Simple patch for this, It involves invoking a deity. >> >> >>> Dave T=C3=A4ht >>> Let's go make home routers and wifi faster! With better software! >>> https://www.gofundme.com/savewifi