From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f175.google.com (mail-wi0-f175.google.com [209.85.212.175]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id 3856421F0A2 for ; Thu, 12 Jul 2012 17:43:16 -0700 (PDT) Received: by wibhm2 with SMTP id hm2so62145wib.10 for ; Thu, 12 Jul 2012 17:43:14 -0700 (PDT) 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=LOI/iJu0/jTJA980XBC0s5Pkh6hSRrnLraErgid3Tyc=; b=jIQGFKeRqB07yDEqaS1ZUMH4pSI/MRlWukU4oWLmX8XwJwwYIEdaCFLPq+s/AQ4F8m JKB6jmwgJGLoClHTVT74qL25ic5HGGIApumGmOO+XxSsIHEqk46d+bPZ+XD4l/50plMh rpklQlr2g3WZML1mQcHIZiRgVwb8MJIfowKJMclkTZ7mLWDmsB5CT2M7INO3JFIKJeqw 6nwzcRFSNNUdrz3yHBRcX01ld8io/89EfgksjoofCXjja2lH5gFZJjcpv6/FM7S6/1Z4 5Q3oUwE1+/tBncYphWpBzNlQj9JSLDLjIRIhMn+ROcFPPqhHI2ue7GG40mCn6ZiWxhyS LNJA== MIME-Version: 1.0 Received: by 10.216.133.133 with SMTP id q5mr161970wei.139.1342140193950; Thu, 12 Jul 2012 17:43:13 -0700 (PDT) Received: by 10.223.96.132 with HTTP; Thu, 12 Jul 2012 17:43:13 -0700 (PDT) In-Reply-To: References: Date: Thu, 12 Jul 2012 20:43:13 -0400 Message-ID: From: Dave Taht To: Maciej Soltysiak Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: cerowrt-devel@lists.bufferbloat.net Subject: Re: [Cerowrt-devel] Cerowrt 3.3.8-10 is released 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: Fri, 13 Jul 2012 00:43:17 -0000 On Thu, Jul 12, 2012 at 2:51 PM, Dave Taht wrote: > I enabled crypto not via on the 2.4ghz interface on the -11 release > and it worked. > > I DID have to do a clean reboot tho. > > 5.x is showing a new problem. Sorry for the flurries of emails, I am literally 95% into a suitcase right = now. The 5ghz issue I was seeing is due to the ubuntu 3.5 kernel I was using not doing 5ghz at all! I did manage to connect at 5ghz via another box, and get a dhcp address, and use crypto. It did take seemingly forever to get a crypto connection, perhaps that is an entropy problem. So, treat -10 and -11 with kid gloves and revert to 3.3.8-6 if you have to. I did some more lab (rather than field tests) on 3.3.8-11, in conditions where I should be getting 100+Mbit, and would get ~20Mbit for a single stream download, and a sum of 66Mbit for 4 streams, so utilization is poor. Originally, I was writing this off to losing aggregation performance with the qlen_be change from 128 to 3. Now it appears to be more subtle and fq_codel/wireless framing related. Latency stayed low though, and that was my primary goal for this release. Much works lies ahead to get serious bandwidth back into the system while keeping low latency, however those that need 50Mbit+ and actually have wireless nodes that can do that - can fiddle all they like with qlen_be and/or various values for fq_codel's target in ms.... http://www.bufferbloat.net/projects/cerowrt/wiki/338-11_tests On this string of tests I'd tripled the BE queue size from 400 to 1200, and at these speeds I would see the BE queue not get higher than 700, so this got me out of the persistently dropping tail state and into a more codel-ing state: http://www.bufferbloat.net/issues/402 http://www.bufferbloat.net/issues/401 seems to be better but I can crash the beast at where we are right now if I fully exercise 3 of the wireless queues (this isn't going to happen to people that aren't flooding the box on every queue, but it's easy to duplicate as per the bug) > > On Thu, Jul 12, 2012 at 4:55 PM, Dave Taht wrote: >> Might have been the bug felix fixed in -11 >> >> Might also have corrupted the /etc/config/wireless and/or >> /etc/config/network file too. if you ended up with a wlan0-1 in there >> that would be it... >> >> I too rarely use the gui interface. >> >> On Thu, Jul 12, 2012 at 4:45 PM, Maciej Soltysiak = wrote: >>> Hi, >>> >>> Just flashed WNDR3800 with 3.3.8-10 and I get a weird problem. >>> After flashing it works fine, until I change radio0 and 1 wifi settings= : set >>> WPA2, set channel, etc. >>> After save&apply, on a cilent PC I am able to see the networks on the l= ist >>> but it's not possible to connect. >>> I believe the client associates with the AP, but it has an APIPA addres= s. >>> Happens to normal and guest interfaces too, even if I don't touch guest >>> interfaces. >>> >>> I logged in over the wire to see if dhcpd was running and it was, but s= ince >>> I can't find logs in the usual place I will now fallback to different >>> firmware. >>> >>> Could that be a known issue? >>> >>> Regards, >>> Maciej >>> >>> On Wed, Jul 11, 2012 at 6:56 PM, Maciej Soltysiak >>> wrote: >>>> >>>> Hi Dave, >>>> >>>> Thanks for a good, lengthy update. I wish you pleasant time travelling= . >>>> >>>> One question on ECN though. >>>> >>>> >>>> On Tue, Jul 10, 2012 at 3:43 AM, Dave Taht wrote= : >>>>> >>>>> - ECN dropping - after several high level conversations with many >>>>> people smarter than me, I decided that dropping ECN packets at a >>>>> certain point made sense. So did everyone else. The "certain point" >>>>> remains puzzling to all, and >>>>> rather than continue to waste time on it in cero I decided to play >>>>> with models instead, and frankly, hope that someone else comes up wit= h >>>>> some sane way to combine ECN and codel sojourn time. >>>> >>>> So if we're dropping ECN packets and not of trying to allow them throu= gh >>>> to communicate congestion am I better of enabling ECN on clients on my >>>> network or not? >>>> >>>> Regards, >>>> Maciej >>> >>> >> >> >> >> -- >> Dave T=E4ht >> http://www.bufferbloat.net/projects/cerowrt/wiki - "3.3.8-6 is out >> with fq_codel!" > > > > -- > Dave T=E4ht > http://www.bufferbloat.net/projects/cerowrt/wiki - "3.3.8-6 is out > with fq_codel!" --=20 Dave T=E4ht http://www.bufferbloat.net/projects/cerowrt/wiki - "3.3.8-6 is out with fq_codel!"