From owner-freebsd-performance@FreeBSD.ORG Mon May 25 07:28:45 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 AAEF769D; Mon, 25 May 2015 07:28:45 +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 62DE1A95; Mon, 25 May 2015 07:28:45 +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 7E687250A73; Mon, 25 May 2015 09:28:43 +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 MQeFRLanhup7; Mon, 25 May 2015 09:28:39 +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 2EEBE250A74; Mon, 25 May 2015 09:28:39 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=field.hu; s=mail; t=1432538919; bh=BwNUSM09DcthcYs/i4l6Awf+drKIkJ5sB+OrTnhB3fM=; h=Date:From:To:Subject:References:In-Reply-To; b=beXNUD0WquZkSSqxVBX48+8SR9cdderiKGSIiD/BfPykRSC2hJVGF8DN/4jJnY2OU q9DweoEp1BLuDWHa50RK4E0SqVHwS/piVwrn8+YhEb2ve9YI+EbG7lOSQrFJQoHitS L0D/1AYA6AWgTh3pL8B+tiMKKzY91QGbBcmDy9Yg= Message-ID: <5562CF22.60306@field.hu> Date: Mon, 25 May 2015 09:28:34 +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: Julian Elischer , freebsd-performance@freebsd.org Subject: Re: FreeBSD 10.1-REL - network unaccessible after high traffic References: <5561EA73.20005@field.hu> <55628963.9080805@freebsd.org> <5562C27A.5000604@field.hu> <5562C718.6040005@field.hu> <5562CE57.6070000@freebsd.org> In-Reply-To: <5562CE57.6070000@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 07:28:45 -0000 Thanks, will try that! 2015.05.25. 9:25 keltezéssel, Julian Elischer írta: > On 5/25/15 2:54 PM, Cs wrote: >> Hi All, >> >> Julian gave me an idea to increase MTU to 9000 but I'm not sure if it >> helps. Anyway I increased it on both servers. >> @Julian: the loader.conf and sysctl tuning parameters are ok? > > better mailing list might be -net. > > I don't see any obvious problems. > It may be worth trying to turn off all the advanced features like > TSO etc. > > >> >> Regards, >> Csaba >> >> 2015.05.25. 8:34 keltezéssel, Cs írta: >>> 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" >>> >>> _______________________________________________ >>> 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" >> >> >> >