From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-x229.google.com (mail-wi0-x229.google.com [IPv6:2a00:1450:400c:c05::229]) (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 0121D21F2CF for ; Sat, 5 Apr 2014 09:15:09 -0700 (PDT) Received: by mail-wi0-f169.google.com with SMTP id hm4so4113389wib.0 for ; Sat, 05 Apr 2014 09:15:08 -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=/A625OxQ3GqdzNY6ri4V4yYvRLbaTfmM/O5NGNb7EKE=; b=tBeK3ZWK4Cqtt1a6KnGogTl3gN39Koy2bb7lURRP/e+yLfS7vVnXSLNjsJ2VOUi6J4 VZLLIWXrPN8UmiB9+sfoXOUCV36+cS0MABmH0bsvc10vyZ9xAgIi8fFOX28koV3IZNEa QyZrpFQPX7/VbUK46K60sbPpNIzRkS+EYTOxiJgB0TubfeYYtU9KxuU2gLCHk+hloRUq 9IgX0UBSaw9mGc9cSZUkmCepKCRVpdRY7u4+P41B8Zd3/TDWvCrkYRMmrrFUXeDy0KdG q4G0AX8Umbcpfkb2P4Yd5SiNkpstIsejg9Oi8m28UuJ/TzgEG+VTAq9Bmp7rN3hB4cRj Ng3w== MIME-Version: 1.0 X-Received: by 10.194.175.70 with SMTP id by6mr28813100wjc.3.1396714508087; Sat, 05 Apr 2014 09:15:08 -0700 (PDT) Received: by 10.216.8.1 with HTTP; Sat, 5 Apr 2014 09:15:08 -0700 (PDT) In-Reply-To: References: <533DA665.2050305@gmail.com> <533FFBC7.2030201@gmail.com> Date: Sat, 5 Apr 2014 09:15:08 -0700 Message-ID: From: Dave Taht To: Neil Shepperd Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: "cerowrt-devel@lists.bufferbloat.net" Subject: Re: [Cerowrt-devel] cerowrt-3.10.34-4 dev build 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: Sat, 05 Apr 2014 16:15:10 -0000 In_trying_to_sort_out_the_differences_between_the_people working_wifi_for_long_periods,vs_those_without... I_am_curious_if_your_country code_is_set,and_what_it_is_set_to,and_your_wifi_channel_set It_is_long_past_time_we_start_up_a_formal_bug_for_this, but_I'll_wait_for_my_spacebar. In_a_known_pretty_good_case: root@lorna-gw:~# cat /etc/openwrt_release DISTRIB_ID=3D"CeroWrt" DISTRIB_RELEASE=3D"3.10.32-9" DISTRIB_REVISION=3D"r39917" DISTRIB_CODENAME=3D"toronto" DISTRIB_TARGET=3D"ar71xx/generic" DISTRIB_DESCRIPTION=3D"CeroWrt Toronto 3.10.32-9" DISTRIB_TAINTS=3D"no-all busybox" root@lorna-gw:~# uptime 16:07:37 up 21 days, 21:35, load average: 0.00, 0.01, 0.04 root@lorna-gw:~# egrep -i "country|channel|htmode" /etc/config/wireless option channel 11 option htmode HT20 option channel '44' option htmode HT40+ option country 'US' On Sat, Apr 5, 2014 at 9:02 AM, Dave Taht wrote: > On Sat, Apr 5, 2014 at 5:49 AM, Neil Shepperd wrote= : >>> Sounds like you are going to stick with -4 for a bit? >> >> Actually, this is the first time I've tried cerowrt on a router. But >> yeah, I'll stick with the current version unless you come out with a new >> patch to try. > > Thx. I am hoping this is the *last* priority 1 bug cerowrt has. > > but_fixing_it_is_going_to_be_pita. > > I_confess_to_"embedded_fatigue". > >>> what I've been doing is mounting a usb stick, and just running continuo= usly >>> on the stick >>> >>> tcpdump -s 128 -i ge00 -w ge00.cap & >>> tcpdump -s 128 -i sw00 -w sw00.cap & >>> >>> This definately hurts performance... >>> >>> And it's probably time to do a tcpdump on the connected device as well. >>> >> >> Update: I did this, and experienced the hang again. A first look at the >> tcpdump output on sw00 shows a sudden reduction in traffic at 20:40:54, >> so I assume that's probably the time of the event. After that, I see >> many DHCP and ARP requests arriving, but no responses leaving the interf= ace. > > It_would_be_nice_to_see_10sec_of_these_captures_before_and_after. > >> >> In fact, I don't see anything leaving except, oddly, some DNS responses >> (which are indeed received by my laptop). I also see some EAPOL stuff on >> both the router and laptop at roughly the same time, so I guess that's >> getting through, but I don't know the direction. >> >> I think next time I'll try with -Pin/-Pout to separate incoming and >> outgoing packets properly... > > Tis easier_to_sort_in_wireshark_against_one_capture,IMHO. > > I_have_been_looking_for_failed_syn_attempts_and_retries_as_a_key_indicato= r > that_something_Bad_happened. > >>> Hmm. OK, this brings back the device driver into the equation... I >>> WAS seeing dhcp and arp requests "getting through" from the captures, >>> and it seemed like arp in particular was getting through... >> >> So I guess this is only half right? What I see in syslog is dnsmasq >> saying it has sent a packet, but it doesn't make it onto the interface. >> Apart from DNS packets, so I don't know what to make of that. > > It_is_possible_there_are_a_variety_of_failure_modes. > > I_am_not_entirely_convinced_this_is_actually_a_wifi_specific_failure. > > can_you_try_ssh_to_the_router_during_a_failure,and/or_accessing > the_web_admin_interface?and/or_trying_to > > if_you_are_not_using_babel_disable_it.It_makes_a_lot_of_updates > to_the_routing_table.that_might_be_malfunctioning.. > > (I_really_need_a_keyboard_that_recovers_from_damp_weather.) > >> Neil > > > > -- > Dave T=E4ht > > Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscrib= e.html --=20 Dave T=E4ht Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscribe.= html