From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ob0-x243.google.com (mail-ob0-x243.google.com [IPv6:2607:f8b0:4003:c01::243]) (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 BD4093B260; Thu, 5 May 2016 12:42:08 -0400 (EDT) Received: by mail-ob0-x243.google.com with SMTP id aq1so5162951obc.0; Thu, 05 May 2016 09:42:08 -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; bh=g+uwKc6cZ1CUUeunzEWY0SexjklvMOWCLNTwZ8pEoHc=; b=PEEOaPkuHwUMte7Rkr9cv4kfwHJemEQf95RNC1fWL3AlsCLSRv+wtxWgf5h2ibK/XS QS1wjJCkQYkDKkk9TnMhvnL7VGPQ/qhHKySJpJu+/Yq3KqrMI9CDdUvKhJi5TREZnCv2 liLZjyxmkWQeg/5ywr1szRSS85OEjpX7UKk8mdQGlyko1rYKxXNPbf5NUBT275kb4VM5 6d5ahgjz18pPhiAwbGjTXGAS2dUoRjHaAyTbFjtikby4ovQDOSzRagouA4Fm1dEVtjy4 Nlst7ZV6XrV04QirkXhBXmcFMGHE4u8o2r/rqmThe0YS6ebOu+/bVHLC2nVSJbvKUqQK THag== 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=g+uwKc6cZ1CUUeunzEWY0SexjklvMOWCLNTwZ8pEoHc=; b=h5iHbi1UgRSeNpu1VJqM9phc0CEqiltd1vhWQReuagKJ2eI4gE6z1B9qkJvcWEj+VQ qMYlqoXXWUJAzSvS9At4eXk7HiRc2IUjDZU2xwmld55Pjt28XJZ2f5sCCKgLQcAbv3l9 DMc4tNHJi1j6c0lZneNqGJRJBCh3kSXdjFmIXhmdbGJB/fz4bBYmam91ARAnH4TIzsbI 6+Dp2feGO8GEHbcfuIGeuhqjrg6q2b8Tb7Huo0CanipkKIAhjpW4pXMKwlwnGdzJPtR3 tFU5Fce3ziQ7Lj+C2uJVxr0J34E6rkLSGo1OQtz8OzrOrP6hco71H8UdMpuAe8WRNIii z0sA== X-Gm-Message-State: AOPr4FWIombEqhgLg/FKk8qjdea6M8oKNqSnUPbYJsDaPe5GvgqrQOlV7+EebfDbhjW5sLWw+XCSWYmHUIAFKA== MIME-Version: 1.0 X-Received: by 10.182.24.104 with SMTP id t8mr7362105obf.1.1462466528265; Thu, 05 May 2016 09:42:08 -0700 (PDT) Received: by 10.202.252.9 with HTTP; Thu, 5 May 2016 09:42:08 -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: Thu, 5 May 2016 19:42:08 +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: [Make-wifi-fast] [Codel] fq_codel_drop vs a udp flood X-BeenThere: make-wifi-fast@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 05 May 2016 16:42:08 -0000 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? Regards, Roman