From owner-freebsd-performance@FreeBSD.ORG Mon May 25 06:34:51 2015 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id E1E29F64 for ; Mon, 25 May 2015 06:34:50 +0000 (UTC) (envelope-from bimmer@field.hu) Received: from green.field.hu (green.field.hu [217.20.130.28]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 6A533C59 for ; Mon, 25 May 2015 06:34:49 +0000 (UTC) (envelope-from bimmer@field.hu) Received: from green.field.hu (localhost [127.0.0.1]) by green.field.hu (Postfix) with ESMTP id 9E9EC250AA5 for ; Mon, 25 May 2015 08:34:46 +0200 (CEST) X-Virus-Scanned: by Amavisd-new at field.hu Received: from green.field.hu ([127.0.0.1]) by green.field.hu (green.field.hu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id gZktSxdxEHd8 for ; Mon, 25 May 2015 08:34:39 +0200 (CEST) Received: from [192.168.52.11] (1F2EC6DD.catv.pool.telekom.hu [31.46.198.221]) by green.field.hu (Postfix) with ESMTPA id 2D55C250A61 for ; Mon, 25 May 2015 08:34:39 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=field.hu; s=mail; t=1432535679; bh=WGCStl3XBgvSHuAXkns7ujb+KCPTioJS9nFu/jUo3ts=; h=Date:From:To:Subject:References:In-Reply-To; b=nNhir/4HF+UhHnoWuJ+Cph6SIY0Rs0GFWbeiWqlGIaj6IquefWkmg/X8GWsYD3ZmW QveuVtlxXDUjVUo5XZibs2FCwzOVL4jWsxSJOX6UdnjHKiraPB1F8D4IMoKXdMdo6z Be1tKOO8zu7nBf8phx/VGuLOBIsPcETFf0oeq0+w= Message-ID: <5562C27A.5000604@field.hu> Date: Mon, 25 May 2015 08:34:34 +0200 From: Cs User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: freebsd-performance@freebsd.org Subject: Re: FreeBSD 10.1-REL - network unaccessible after high traffic References: <5561EA73.20005@field.hu> <55628963.9080805@freebsd.org> In-Reply-To: <55628963.9080805@freebsd.org> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 May 2015 06:34:51 -0000 Hi Julian, Yes, the problem was the same when I used cross link for two years. The duplex settings are identical on both servers. Server A: em1: flags=8843 metric 0 mtu 1500 options=4219b ether 00:25:90:24:52:66 inet x.x.x.x netmask 0xfffffe00 broadcast x.x.x.x nd6 options=29 media: Ethernet autoselect (1000baseT ) status: active Server B: em0: flags=8843 metric 0 mtu 1500 options=4219b ether 00:30:48:dd:fe:3e inet x.x.x.x netmask 0xfffffe00 broadcast x.x.x.x nd6 options=29 media: Ethernet autoselect (1000baseT ) status: active I always suspected the 'em' driver and thought "it will be fixed in the next release", but after ~3 years I think I need to dig deep to find the root cause. Regards, Csaba 2015.05.25. 4:30 keltezéssel, Julian Elischer írta: > On 5/24/15 11:12 PM, Cs wrote: >> Hi all, >> >> I have two FreeBSd 10.1-RELEASE servers connected to each other. They >> were connected via cross link, but they are connected to a cisco >> switch now. When transferring huge files (50-500GB backup files) via >> Gigabit (it is important!) the network randomly dies. The backup runs >> every day/week and sometimes the connection is ok for months >> sometimes it happens twice a week. When the network dies I can log in >> to the server via IPMI and use the console everything is OK, but >> can't send anything out on the network. ifconfig em0 down/up doesn't >> help nor netif restart. The problem never occured when I used 100Mbit >> connection between them, but it was 3com NIC (xl), gigabit adapter is >> Intel (em0). When I limit the transfer rate (rsync bandwith limit or >> ipfw pipe) the problem is much more rare. > > did you have the problem with no switch? > is he duplex setting correct? > >> >> I tried to set these tuning parameters on both servers with different >> buffer size but nothing helped: >> >> # cat /etc/sysctl.conf >> security.bsd.see_other_uids=0 >> net.inet.tcp.recvspace=512000 >> net.route.netisr_maxqlen=2048 >> kern.ipc.nmbclusters=1310720 >> net.inet.tcp.sendbuf_max=16777216 >> net.inet.tcp.recvbuf_max=16777216 >> kern.ipc.soacceptqueue=32768 >> >> # cat /boot/loader.conf >> geom_mirror_load="YES" # RAID1 disk driver (see gmirror(8)) >> ipfw_load="YES" >> net.inet.ip.fw.default_to_accept=1 >> kern.maxusers=4096 >> accf_data_load="YES" >> >> Any ideas? Thanks guys! >> _______________________________________________ >> freebsd-performance@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-performance >> To unsubscribe, send any mail to >> "freebsd-performance-unsubscribe@freebsd.org" >> > > _______________________________________________ > freebsd-performance@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-performance > To unsubscribe, send any mail to > "freebsd-performance-unsubscribe@freebsd.org"