From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk1-x72c.google.com (mail-qk1-x72c.google.com [IPv6:2607:f8b0:4864:20::72c]) (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 4227C3BA8E for ; Thu, 6 Sep 2018 14:40:23 -0400 (EDT) Received: by mail-qk1-x72c.google.com with SMTP id d15-v6so8066930qkc.1 for ; Thu, 06 Sep 2018 11:40:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=1Ih/iZzNMLpZ2reTaNqdXnzuTvCG2YMwx7OnDPusqXw=; b=XUQSlA4CBmk3cT6X+7MhrqZ0+jaOT5s2anDNrTFaIYvkpm/7jxbKT9rZ+HUad+8nzv hlChwPf9MBEAK0FV2udG9O9KQffUFjDK9y10jS+PmHt9ihix+1s//0N+uJKiLxCMENoK hfyUGaPSLg54KWnF/4o5siqZQz39xaRQey8/yO4rxF2iYjCLhbNA2tFQ/G3OUn7nwvXv idrTK0VUe8zvQ3gwoPQekSsJ+9ynxPgTdYlfaNGcmNGxe/5Hmr4eM5Z1QQIVECtZHMn0 hSKTACbl68SDdv6PY8n/A36D0lTXnz1J6Ni1jAk3D+uQnNrmXtJX7QI1Aq1e6QyZbRpF F+Xw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=1Ih/iZzNMLpZ2reTaNqdXnzuTvCG2YMwx7OnDPusqXw=; b=J/AVRfSS6uwtgSyXzJsE6w4vfCEzGpWdoPlTDFd2ZgK9ZUtM/zWQSUyadHuuLCDv0H MuG5LjC3rEHrRxpagNJe6ecJFbS/EluRhqudp395CDe9V3X96hBvFsQZhE5nT3NwQnSh TfhC3BCfLmTNvjU7uI6huUE1OjLupRDZ99bhBPUOADHzvlYfFIdpgggyLDM983MVNc+w g5tvFwnxuOubZxnIs0DCs7zuXXgmd2lGNuvUuAvamIONhHYxg8sbtHhe7mfmztk+8wiT KK1gbmu52f7cQWcJpfbOnlusbuJWtnN9YRoxH4JWzoTEntoz5gffWPCNCHoe4pcwz7ZC BBCA== X-Gm-Message-State: APzg51BHvUpj+dNr/wAochhFOo/pDJt9klwfHADKO+/OrVoYuPuQSvDe kbkOn43BYGKoee9uR3+UEr+oOZ+nqsRnDd5xIoWDmw== X-Google-Smtp-Source: ANB0Vda9Pc02ZuTdE2Kt68xk72vT490gcqZf6z0f5JhjKwbqhK1ybwQyutMIwjyvrDzRA2fqFMLUzfZeyR/at/2A4yw= X-Received: by 2002:a37:c845:: with SMTP id c66-v6mr2970233qkj.65.1536259222656; Thu, 06 Sep 2018 11:40:22 -0700 (PDT) MIME-Version: 1.0 References: <3E647031-D865-41B1-9C3A-6D34DB291005@heistp.net> In-Reply-To: From: Dave Taht Date: Thu, 6 Sep 2018 11:40:11 -0700 Message-ID: To: Pete Heist Cc: Cake List Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: Re: [Cake] fq_codel_fast 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, 06 Sep 2018 18:40:23 -0000 re: conntrack - I think the udp standard for holding a hole punch open is 2-3 minutes. I've seen 30 sec or less in the field. On Thu, Sep 6, 2018 at 11:36 AM Pete Heist wrote: > > > > On Sep 6, 2018, at 7:22 PM, Dave Taht wrote: > > > > There was a very good paper or two (I think luca co-authored one) that > > showed that "active flows" were generally measured in the mid 200s in > > nearly any scenario. I agreed with that which was in part why I felt > > we could stick > > with 1024 queues, a direct mapped hash, and a couple collisions. > > So I=E2=80=99m not sure if this is a great way to gauge active flow count= s through a router, but at 8pm: > > root@FreeNetVysina:~# grep ESTABLISHED /proc/net/ip_conntrack | wc -l > 446 > FreeNetJerab:~# grep ESTABLISHED /proc/net/ip_conntrack | wc -l > 181 > FreeNetOldrichova:~# grep ESTABLISHED /proc/net/ip_conntrack | wc -l > 228 > > Far from my estimate of tens. Many of those can be idle connections, I su= spect. 60-80% of them are http/s. > --=20 Dave T=C3=A4ht CEO, TekLibre, LLC http://www.teklibre.com Tel: 1-669-226-2619