Sent from my iPhone
On Jun 25, 2009, at 9:59 AM, Alexander Pirsig <alex@xxxxxxxxxx> wrote:

Hi again,

sorry it was my fault the problem is I used (ethtool -K xenbr1 tx off) in my DOM0-network config which is bad on high loads ;( right config that works for me looks like that:

# eth1 -> intern 1
iface eth1 inet static
 up ifconfig eth1 0.0.0.0 promisc up
# eth1 -> xenbr1
auto xenbr1
iface xenbr1 inet manual
 bridge_ports eth1
 bridge_fd 1
 bridge_stp off
 bridge_hello 1
 post-up ethtool -K xenbr1 tx on
 down ifconfig xenbr1 down
 post-down brctl delbr xenbr1
The (ethtool -K xenbr1 tx off) needs to be inside of DOMu on postup
Sorry again,
Cheers,
Alex
Alexander Pirsig wrote:

Hello everybody,

at the moment we're have a strange problem during high load on our DOMUs Network services became unavailable for a short period connection time takes several seconds. Will the service (tomcat) is still available from inside of the domU connections from DOM0 and even from other servers hangs. If tried to desiable checksuming (ethtool -K eth0 tx off) on DOMUs interface

netstat output DOMU is as follows:
netstat -an|awk '/tcp/ {print 6ドル}'|sort|uniq -c
=============================
 231 ESTABLISHED
 259 FIN_WAIT2
 1 LAST_ACK
 6 LISTEN
 340 TIME_WAIT
brctl show on DOM0:
=============
bridge name bridge id STP enabled interfaces
eth0 8000.001ec9edee5e no peth0
 vif135.0
 vif144.0
xenbr1 8000.001ec9edee60 no eth1
xenbr2 8000.0015178538c2 no eth2
 vif134.0
 vif137.0
xenbr3 8000.0015178538c3 no eth3
 vif143.0
 vif148.0
One of DOMUs configuration:
=====================
kernel = '/boot/vmlinuz-2.6.26-2-xen-amd64'
ramdisk = '/boot/initrd.img-2.6.26-2-xen-amd64'
extra='console=hvc0'
memory = '2400'
vcpus = '8'
#
# Disk device(s).
#
root = '/dev/sda1 ro'

disk = [ 'phy:system/tomcat03-disk,sda1,w', 'phy:system/tomcat03- swap,sda2,w' ]

#
# Hostname
#
name = 'tomcat03'
#
# Networking
#
vif = [ 'ip=192.168.0.98,mac=00:16:3E:41:2C:18,bridge=xenbr3' ]
#
# Behaviour
#
on_poweroff = 'destroy'
on_reboot = 'restart'
on_crash = 'restart'
How can I repeat?
Regards,
Alex
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