From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from uplift.swm.pp.se (ipv6.swm.pp.se [IPv6:2a00:801::f]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id BFB293B29E for ; Thu, 3 Sep 2020 09:10:13 -0400 (EDT) Received: by uplift.swm.pp.se (Postfix, from userid 501) id 7488DB1; Thu, 3 Sep 2020 15:10:11 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=swm.pp.se; s=mail; t=1599138611; bh=ziaHjmc+vbWlsEwgMdpKFS2lN6mE4G/sbvN74WWJBIM=; h=Date:From:To:cc:Subject:In-Reply-To:References:From; b=U4zIxtjYE/+iArLXQwNz5puM6dumQuQ7n3QSU+8cfN7bxWhVcm+yJ7KjeWmGdJHh0 wQWVTCq62MW1TSiApS2m3n8XJYHWDmskMIznguE9bbrZ7pVWp7rIaaZvsoGGDz0O6+ Q+/n5+tECZJYX5g5KCowf2roiBnrOCnVDuD/Rwp4= Received: from localhost (localhost [127.0.0.1]) by uplift.swm.pp.se (Postfix) with ESMTP id 6FC44B0; Thu, 3 Sep 2020 15:10:11 +0200 (CEST) Date: Thu, 3 Sep 2020 15:10:11 +0200 (CEST) From: Mikael Abrahamsson To: =?ISO-8859-15?Q?Toke_H=F8iland-J=F8rgensen?= cc: bloat@lists.bufferbloat.net In-Reply-To: <87eennj64i.fsf@toke.dk> Message-ID: References: <87mu2bjbf8.fsf@toke.dk> <87eennj64i.fsf@toke.dk> User-Agent: Alpine 2.20 (DEB 67 2015-01-07) Organization: People's Front Against WWW MIME-Version: 1.0 Content-Type: multipart/mixed; BOUNDARY="-137064504-125726701-1599138611=:20021" Subject: Re: [Bloat] CAKE in openwrt high CPU X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Sep 2020 13:10:13 -0000 This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. ---137064504-125726701-1599138611=:20021 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8BIT On Mon, 31 Aug 2020, Toke Høiland-Jørgensen wrote: > And what about when you're running CAKE in 'unlimited' mode? I tried this: # tc qdisc add dev eth0 root cake bandwidth 900mbit This seems fine from a performance point of view (not that high sirq%, around 35%) and does seem to limit my upstream traffic correctly. Not sure it helps though, at these speeds the bufferbloat problem is not that obvious and easy to test over the Internet :) root@OpenWrt:~# tc -s qdisc qdisc noqueue 0: dev lo root refcnt 2 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 qdisc cake 8034: dev eth0 root refcnt 9 bandwidth 900Mbit diffserv3 triple-isolate nonat nowash no-ack-filter split-gso rtt 100.0ms raw overhead 0 Sent 1111772001 bytes 959703 pkt (dropped 134, overlimits 221223 requeues 179) backlog 0b 0p requeues 179 memory used: 2751976b of 15140Kb capacity estimate: 900Mbit min/max network layer size: 42 / 1514 min/max overhead-adjusted size: 42 / 1514 average network hdr offset: 14 Bulk Best Effort Voice thresh 56250Kbit 900Mbit 225Mbit target 5.0ms 5.0ms 5.0ms interval 100.0ms 100.0ms 100.0ms pk_delay 0us 22us 232us av_delay 0us 6us 7us sp_delay 0us 4us 5us backlog 0b 0b 0b pkts 0 959747 90 bytes 0 1111935437 39440 way_inds 0 22964 0 way_miss 0 275 2 way_cols 0 0 0 drops 0 134 0 marks 0 0 0 ack_drop 0 0 0 sp_flows 0 3 1 bk_flows 0 1 0 un_flows 0 0 0 max_len 0 68130 3714 quantum 1514 1514 1514 -- Mikael Abrahamsson email: swmike@swm.pp.se ---137064504-125726701-1599138611=:20021--