From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 350B13CB35 for ; Thu, 22 Aug 2019 06:12:52 -0400 (EDT) Received: from mail-ed1-f69.google.com (mail-ed1-f69.google.com [209.85.208.69]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 215012A09B2 for ; Thu, 22 Aug 2019 10:12:51 +0000 (UTC) Received: by mail-ed1-f69.google.com with SMTP id z25so2993028edm.3 for ; Thu, 22 Aug 2019 03:12:51 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:in-reply-to:references:date :message-id:mime-version:content-transfer-encoding; bh=Q0pIknYyHMexZB/emK12WcIBtWmAlfLbBzJVllfSeGw=; b=fbtTo2rly5NqmIaDE1wQfdg31+VnhgEECUrouLjP5oX5FkiVa2z3H6sSsVVqED6FbV Yd5uDlqMHmayBoSJF1uf7tpbrLP8w2klJqLRN6QcAkeZfwDNSoPExXb08bhR9ABHXQVM LAfe4qwkOiYfKjAg5/kF85KSL4aN4QzZ0v8ht5fKlsWl4/dDzupABD5qfrjk+utWKIE+ U4k3SpgtorwO64pv5i8FQpsGyfe8EpEQw/xdW7TytimEaHzd6677UDtPzDyHShF2y/Fn orLa/ey3us4Jx9ZWPTKt/mnAANwKokwMCIARecEJgEZdk6O+4tge9VpAPFuNV9RGEaS6 Gq3Q== X-Gm-Message-State: APjAAAVcO2Ao+BM8FaVwN9MYcIFhArJTGXCI7uzKTCsCEenG5QGXVQbI 7S4Jew/vA5h91ZsVWJ3BcTpc+sxfk1pvJvtjwfcZevSOuqW8x2NY2532q50GUimUFI7yDrjjFfp YxunM7mwqkWv5Jz8amc/8BQ== X-Received: by 2002:a17:906:924a:: with SMTP id c10mr33999961ejx.115.1566468769888; Thu, 22 Aug 2019 03:12:49 -0700 (PDT) X-Google-Smtp-Source: APXvYqx3Zl3VIwxidbTzglaZFidSXOSjKxTvB3+HO4QScz8QVEsNLY5wnMA5a1gVvZqDASJsSyEi0g== X-Received: by 2002:a17:906:924a:: with SMTP id c10mr33999939ejx.115.1566468769616; Thu, 22 Aug 2019 03:12:49 -0700 (PDT) Received: from alrua-x1.borgediget.toke.dk ([2a00:7660:6da:443::2]) by smtp.gmail.com with ESMTPSA id f2sm4516106eds.87.2019.08.22.03.12.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Aug 2019 03:12:48 -0700 (PDT) Received: by alrua-x1.borgediget.toke.dk (Postfix, from userid 1000) id 50D3B181CEF; Thu, 22 Aug 2019 12:12:48 +0200 (CEST) From: Toke =?utf-8?Q?H=C3=B8iland-J=C3=B8rgensen?= To: Sebastian Gottschall , Sebastian Moeller , cake@lists.bufferbloat.net, Dave Taht , Jonathan Morton In-Reply-To: <0cd1c3ea-6ef5-3293-0b65-58cb1e4871eb@newmedia-net.de> References: <384866b4-4c91-cf2c-c267-ee4036e5fbf7@newmedia-net.de> <87wof7sriw.fsf@toke.dk> <6782ec15-30eb-63b0-f54f-376c5e6b840b@newmedia-net.de> <87tvabsp99.fsf@toke.dk> <74bccc2b-b805-255f-b6a7-83ade9af6765@newmedia-net.de> <87r25fsn70.fsf@toke.dk> <54438C64-C613-438E-9CB9-6C6D0C5EAFA0@gmail.com> <87sgpvflo4.fsf@taht.net> <87wof6rf7t.fsf@toke.dk> <7656FCDE-C590-4B0C-B191-B9FAC928A762@gmail.com> <5eb4c395-c718-2d28-65a7-9762cf8d5bea@newmedia-net.de> <47AD5102-B66F-44A5-AADE-D167ECB94A61@gmx.de> <1d772664-b6cc-a528-9725-96a431032875@newmedia-net.de> <87wof6p595.fsf@toke.dk> <0cd1c3ea-6ef5-3293-0b65-58cb1e4871eb@newmedia-net.de> X-Clacks-Overhead: GNU Terry Pratchett Date: Thu, 22 Aug 2019 12:12:47 +0200 Message-ID: <87o90hpkyo.fsf@toke.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Subject: Re: [Cake] pie in dd-wrt X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 Aug 2019 10:12:52 -0000 Sebastian Gottschall writes: > Am 21.08.2019 um 23:39 schrieb Toke H=C3=B8iland-J=C3=B8rgensen: >> Sebastian Gottschall writes: >> >>> Am 21.08.2019 um 18:21 schrieb Sebastian Moeller: >>>> On August 21, 2019 6:12:03 PM GMT+02:00, Sebastian Gottschall wrote: >>>>> thats rather old. i rewrote all the qos code in the last 4 or 5 days. >>>>> so >>>>> things might be changed. next phase is bringing all the link level >>>>> detail configuration stuff into the gui which will be done >>>>> tomorrow or at least still within this week. >>>>> i also added now cake to some smaller low budged routers with limited >>>>> resources, so see how it runs. i had bad experiences with fq_codel in >>>>> the past due some high memory usage. >>>>> especially since its hard coded somewhat into the wireless ath9k >>>>> driver. >>>>> so i already modded it for more efficient handling. 4 mb max per queue >>>>> is simply too much for=C2=A0 a 32 mb ram based router. >>>> This is why I'm sqm we reduced the queued packet maximum m to around 1= 000, and also why cake has an explicit memlimit keyword. >>> yeah but does this help if fq_codel is hardcoded into mac80211? fq_codel >>> has a memlimit=C2=A0 keyword too btw. its fixed to 4MB. i reduced it to= 256kb >>> on low memory architectures. no other way to get around OOM problems >>> mac80211=C2=A0 does always make use of fq_codel. it has a own build in >>> implementation >> The mac80211 implementation also has a memlimit parameter. You can set >> it through debugfs - 2MB would be: >> >> echo 2097152 > /sys/kernel/debug/ieee80211/phy0/aqm >> >> or through iw: >> >> iw phy phy0 set txq memory_limit 2097152 >> >> The nl80211 attribute is called NL80211_ATTR_TXQ_MEMORY_LIMIT. > as i said i already modified mac80211 in a way that it sets sane memory=20 > limits depending on the architecture. devices with just 32 mb ram run=20 > only stable with 256kb memory limit. > so i configured different defaults. but the point is still that for a=20 > standard user (lets say in openwrt) the current implementation is not=20 > good. somewhere in the openwrt community i was reading that such devices= =20 > should not be used anymore for openwrt due the memory limitations. but=20 > thats no solution for me if it was working before the introduction of=20 > fq_codel in mac80211 ... which is why it is configurable? -Toke