From owner-freebsd-net@freebsd.org Fri Aug 4 16:59:14 2017 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id AED5CDBE737 for ; Fri, 4 Aug 2017 16:59:14 +0000 (UTC) (envelope-from ben.rubson@gmail.com) Received: from mail-wm0-x235.google.com (mail-wm0-x235.google.com [IPv6:2a00:1450:400c:c09::235]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 444446FA42 for ; Fri, 4 Aug 2017 16:59:14 +0000 (UTC) (envelope-from ben.rubson@gmail.com) Received: by mail-wm0-x235.google.com with SMTP id t201so24472862wmt.1 for ; Fri, 04 Aug 2017 09:59:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:content-transfer-encoding:subject:message-id:date:to :mime-version; bh=adi4m9KHHWK6C/yEZt3oLCU/xIKRdNScM8102LslH+A=; b=jOAsz4n8y3B8uLm687n4FIAphT2oTjcd9vHxEtsP4iU3f3onc6bYhlbHu9lCSEahQ8 fHrYbncSVoAv+kCnrRdQDf44xZZY1zB7FySd7PLt6cigX5ry0hsY9V8OmRAAqjvQSPbR fScdETtePDmEjf559V4/EpwaAHBupEEsdHLaj6buG7KzTnX7nyXwHYsbxISvFFN5h6LF um8f62l/B3JhXwc0ctKacDpkHh8TPo0fRB6uGUPF08DTVpghCpkPNmC+bYEqlZS3Ar41 gK5Yoyd5QJOgAf5BMAaZxxSCjeRywoVCvFhW1x/L/QaeCRfEgA3sKlAAbpb8rArHrEqg DTlw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:content-transfer-encoding:subject :message-id:date:to:mime-version; bh=adi4m9KHHWK6C/yEZt3oLCU/xIKRdNScM8102LslH+A=; b=eIsdeBuZxWljEIOGVK7zv8esP4WJvpK9u7PI3jojkPdg3hVx8iWZYTvWfqjnWwxxBb 1u6G0VviJvMX002ZI4SB9ZgqifR08KAeO4TIdtkFYzhIb2LAvbRSzUGiQ4ipo/wG0sq9 QHpV+u4brBpWgEmMsvW02lX67kx46WbXBGtAXZZMeNaZZZ8uQJyo6dNgYmHczr32E6rS RMm03Sy3G65wfx6Z0tBrwRAuBtXWS4My4vz58ZeOfgAGvkzRPnThHgoNKlYHxCyzBtzG bvtVVn1kqnpdz6syJ5VYYGVuU6eDvx0E4m4RM/ofPauD+X8wAy6TBTyBvCCCfu+lrYld 6GbQ== X-Gm-Message-State: AHYfb5gx0IgK8CujdJhNE0a1di1mN8hLFv3zl5t+mVwy15CdnrwrTsju FeRsYM2WccnjnCk3swI= X-Received: by 10.28.33.85 with SMTP id h82mr1699272wmh.18.1501865952003; Fri, 04 Aug 2017 09:59:12 -0700 (PDT) Received: from ben.home (LFbn-1-6951-179.w90-116.abo.wanadoo.fr. [90.116.132.179]) by smtp.gmail.com with ESMTPSA id c141sm4217336wmd.44.2017.08.04.09.59.10 for (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 04 Aug 2017 09:59:11 -0700 (PDT) From: Ben RUBSON Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Subject: mlx4en, timer irq @100%... Message-Id: Date: Fri, 4 Aug 2017 18:59:05 +0200 To: FreeBSD Net Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) X-Mailer: Apple Mail (2.3124) X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Aug 2017 16:59:14 -0000 Hello, Not sure this is the right list, but as it seems related to a mlx4en = device... # vmstat -i 1 (...) interrupt total rate cpu23:timer 1198 1127 # top -P ALL (...) CPU 23: 0.0% user, 0.0% nice, 0.0% system, 100% interrupt, 0.0% = idle # netstat -I mlxen0 -d -w 1 input mlxen0 output packets errs idrops bytes packets errs bytes colls = drops (and not output at all, same for mlxen1 !) # uname -sr FreeBSD 11.0-RELEASE-p9 So, as you can see, one of my CPUs is used at 100% by timer interrupts, since about 2 hours, and suddenly. Initiating network connections to this server is now slow. And what I found is that I can't use netstat on my 2 mlx4en devices = anymore (my monitoring tool is then no more fed). sysctl hw.mlxen0 is OK, no errors, and trafic counters grow slowly. What should I do ? How to investigate on this ? Thank you very much for your help & support, Best regards, Ben