Date: Mon, 25 May 2015 10:30:59 +0800 From: Julian Elischer <julian@freebsd.org> To: Cs <bimmer@field.hu>, freebsd-performance@freebsd.org Subject: Re: FreeBSD 10.1-REL - network unaccessible after high traffic Message-ID: <55628963.9080805@freebsd.org> In-Reply-To: <5561EA73.20005@field.hu> References: <5561EA73.20005@field.hu>
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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" >
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