From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id DB0C8138330 for ; Sat, 17 Sep 2016 21:13:42 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 877CBE0B5A; Sat, 17 Sep 2016 21:13:32 +0000 (UTC) Received: from mail-qk0-f170.google.com (mail-qk0-f170.google.com [209.85.220.170]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id F1274E08E1 for ; Sat, 17 Sep 2016 21:13:31 +0000 (UTC) Received: by mail-qk0-f170.google.com with SMTP id t7so117724389qkh.2 for ; Sat, 17 Sep 2016 14:13:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:from:date:message-id:subject:to; bh=ic90D20GImDGn61BYpBY7RqXxOb2osO4TijNOyQtNSo=; b=xQE9cXXDXQ562iA/Kgbl4f5G9z59NQQY9TpyIISmo6z2uSwp6JHfsTEGtpVooNg/8i YnLa+Vdj5pbNS3GWNm00bss9nuroFC9EgZ6w6+JCUxcfUtZrUWaWrZ/k8BWfybRlI0gZ K0sUjuVHDIy62blpD4DFaPS9uX9S7BfseKQLUrd5E1VzZ6yTaWNlIl4ltfsUDeo1lhn+ 0UMJerfhpwv2jlwvkdPhWyxFochZroxUt7hAOpm7OZ7MdzBJAE12cmCvZJXS0XyoCoAG TQhfmcjPYrNmriM1462EJknC4vXU5eMJLfow7sq6UQ4NdkC4UrLOT+mi2z9rflH2V0EA u25A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=ic90D20GImDGn61BYpBY7RqXxOb2osO4TijNOyQtNSo=; b=eL6N3JT4c7AJPnNgByX5Tse0+kvDYQt4PA2pcR0m/I6YDmQQPcIzwNmizi01rVhQZX wLVXeMQFqqYDT3qHbRwdv6QDPumxIIE9CDB7VjnfbZzmAi1V5XCYgeqQDMtaglogA+Ro wX05Y/WQ3MVUUI7555V7NPO3Ha69YWpnjWVvRlfAr1BE1KX5UtqxAm5TllrkNCX0RCNl 79dJWPcHCoTbbh64pohEHa7VDoL6esYFcRsfRUPPsq/2AGAswzz1xbAc3vysJWHtYEas 5lSjagMhbRVwzoMmGDu43BpONKzEChieZj6GZN3aBaQdAIrCzsoJI6vRDKBMJYODkCuY 7fYw== X-Gm-Message-State: AE9vXwMlmVBOcDyMMuf8hnu6oLusSmGVeKMUTtZnkzWOP88qruHWBhTk6ROqXmfN6jx/gQrp6svKtMUJ4aE2lw== X-Received: by 10.55.204.82 with SMTP id r79mr23569353qki.240.1474146811068; Sat, 17 Sep 2016 14:13:31 -0700 (PDT) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Received: by 10.140.38.242 with HTTP; Sat, 17 Sep 2016 14:13:30 -0700 (PDT) From: Grant Date: Sat, 17 Sep 2016 14:13:30 -0700 Message-ID: Subject: [gentoo-user] TCP Queuing problem To: Gentoo mailing list Content-Type: text/plain; charset=UTF-8 X-Archives-Salt: 244f82a8-3083-4b08-9e9b-15f7608f26d5 X-Archives-Hash: 0feae776ab998abe607dc743cfdf63b6 My web server's response time for http requests skyrockets every weekday between about 9am and 5pm. I've gone over my munin graphs and the only one that really correlates well with the slowdown is "TCP Queuing". It looks like I normally have about 400 packets per second graphed as "direct copy from queue" in munin throughout the day, but 2 to 3.5 times that many are periodically graphed during work hours. I don't see the same pattern at all from the graph of all traffic on my network interface which actually peaks over the weekend. TCP Queuing doesn't rise above 400 packets per second all weekend. This is consistent week after week. My two employees come into work during the hours in question, and they certainly make frequent requests of the web server while at work, but if their volume of requests were the cause of the problem then that would be reflected in the graph of web server requests but it is not. I do run a small MTU on the systems at work due to the config of the modem/router we have there. Is this a recognizable problem to anyone? - Grant