From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi0-x244.google.com (mail-oi0-x244.google.com [IPv6:2607:f8b0:4003:c06::244]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 918333B25E; Fri, 6 May 2016 06:55:11 -0400 (EDT) Received: by mail-oi0-x244.google.com with SMTP id d139so17735694oig.1; Fri, 06 May 2016 03:55:11 -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; bh=+3WBwmA0FFHqVAkIJzz1WC3oqwWju/fYGGCSG7HyDyE=; b=HGz3NX2eLPJAm09BrLWCY1NjknsZyDBdA3Cf3bqK09BpEHb7e25Epqm9cnU/Cweopw RKSJ2YKlNa8kxlM11bvGmCcYhaATQ9NC0tp8Rg5jn7Qmg/UVsoV5J8X+BTyPORklkmfo XDvmaOx3+vEq2P5HMJaEmsyU+Pz+ynHhh5mVK4Yy56t1HKptCY+eB5/f1q0X0eDiaBRQ fN4TBSbXVeXthJhpcAwJHXuICAvL/ZEusRsPbaP3BhIIonRwSaV+Fax47lac4PA83kYP XHnxPPNyrIaX65b+QQvTM0EtDv5Y0jG35R72XZQQ2yI3HUo2xrdXRt2vmZMxV2Q7TH1m j7Cg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc; bh=+3WBwmA0FFHqVAkIJzz1WC3oqwWju/fYGGCSG7HyDyE=; b=k6u8HZirbe0y0hKt8hVDv7ZejAKvOpBKJAZKI0/XQ0lYgHX1oM20xm5sBjc0MVFQ3O No4KTr31ebP8hrE1wq5FK+ldPDwybkTa5lhJ+kzbFOP+bvYbaQ5RomC6kqK3YyF5IM2K qn1ugopA9BRm82rig8Zhft2SiI4G+tWFIOWekGNOTmBbsFZ0iEw8P+eXevGg9ugWZh6N fnEP3TM4CtYKhQkM5dbiuQvRHpgnzINBWsE0WmaSJWT4qsmIEPT2Ol44dqj0dg79QITm al1K+Y7pQ7mpCWAu3AnoFq4Z6dvFkK9jn6bWf6qMYcyJzXmp6J7qX3GBy7KChJ9rKZ6i NV3w== X-Gm-Message-State: AOPr4FV1x8DuSVsftxFPhaD054oW3k8eF1bbKomEU6sBRo7GjaR9JdvNI6PapJqzjy+JHrtTnX4BLqFx7T1NCw== MIME-Version: 1.0 X-Received: by 10.157.7.86 with SMTP id 80mr8590640ote.168.1462532110820; Fri, 06 May 2016 03:55:10 -0700 (PDT) Received: by 10.202.252.9 with HTTP; Fri, 6 May 2016 03:55:10 -0700 (PDT) In-Reply-To: References: <1462125592.5535.194.camel@edumazet-glaptop3.roam.corp.google.com> <865DA393-262D-40B6-A9D3-1B978CD5F6C6@gmail.com> <1462128385.5535.200.camel@edumazet-glaptop3.roam.corp.google.com> <1462136140.5535.219.camel@edumazet-glaptop3.roam.corp.google.com> <1462201620.5535.250.camel@edumazet-glaptop3.roam.corp.google.com> <1462205669.5535.254.camel@edumazet-glaptop3.roam.corp.google.com> <1462464776.13075.18.camel@edumazet-glaptop3.roam.corp.google.com> Date: Fri, 6 May 2016 13:55:10 +0300 Message-ID: From: Roman Yeryomin To: Eric Dumazet Cc: Jonathan Morton , make-wifi-fast@lists.bufferbloat.net, "codel@lists.bufferbloat.net" , Dave Taht , ath10k Content-Type: text/plain; charset=UTF-8 Subject: Re: [Codel] fq_codel_drop vs a udp flood X-BeenThere: codel@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: CoDel AQM discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 06 May 2016 10:55:11 -0000 On 5 May 2016 at 19:42, Roman Yeryomin wrote: > On 5 May 2016 at 19:25, Roman Yeryomin wrote: >> On 5 May 2016 at 19:12, Eric Dumazet wrote: >>> On Thu, 2016-05-05 at 17:53 +0300, Roman Yeryomin wrote: >>> >>>> >>>> qdisc fq_codel 0: dev eth0 root refcnt 2 limit 1024p flows 1024 >>>> quantum 1514 target 5.0ms interval 100.0ms ecn >>>> Sent 12306 bytes 128 pkt (dropped 0, overlimits 0 requeues 0) >>>> backlog 0b 0p requeues 0 >>>> maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0 >>>> new_flows_len 0 old_flows_len 0 >>> >>> >>> Limit of 1024 packets and 1024 flows is not wise I think. >>> >>> (If all buckets are in use, each bucket has a virtual queue of 1 packet, >>> which is almost the same than having no queue at all) >>> >>> I suggest to have at least 8 packets per bucket, to let Codel have a >>> chance to trigger. >>> >>> So you could either reduce number of buckets to 128 (if memory is >>> tight), or increase limit to 8192. >> >> Will try, but what I've posted is default, I didn't change/configure that. > > So it didn't change anything :( > Do you want new stats? Just realized that the patch should be applied/ported to Linux kernel OpenWrt part, not compat-wireless. Will try to do that now. Regards, Roman