Hi,
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.
I tried to set these tuning parameters on both servers with different buffer size but nothing helped:
Any ideas? Thanks guys!
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 service netif restart. The problem never occurred 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) the problem is much more rare.I tried to set these tuning parameters on both servers with different buffer size but nothing helped:
Code:
# 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"
Last edited by a moderator:
