[Xen-devel] xen3.3 hvm ubuntu - freeze

[Gian Paolo Buono <gpbuono@xxxxxxxxx>]

Hi,
I have a server with xen and hvm:
root@yoda3:# xm dmesg|grep version
(XEN) Xen version 3.3.0 (buildd@buildd) (gcc version 4.2.4 (Ubuntu 4.2.4-1ubuntu3)) Wed Oct 29 23:39:07 UTC 2008

root@yoda3:~# xm info
host                   : yoda3
release                : 2.6.24-23-xen
version                : #1 SMP Thu Nov 27 20:14:09 UTC 2008
machine                : x86_64
nr_cpus                : 8
nr_nodes               : 1
cores_per_socket       : 4
threads_per_core       : 1
cpu_mhz                : 2992
hw_caps                : bfebfbff:20000800:00000000:00000140:000ce3bd:00000000:00000001:00000000
virt_caps              : hvm
total_memory           : 24575
free_memory            : 20
node_to_cpu            : node0:0-7
node_to_memory         : node0:20
xen_major              : 3
xen_minor              : 3
xen_extra              : .0
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : unavailable
cc_compiler            : gcc version 4.2.4 (Ubuntu 4.2.4-1ubuntu3)
cc_compile_by          : buildd
cc_compile_domain      : buildd
cc_compile_date        : Wed Oct 29 23:39:07 UTC 2008
xend_config_format     : 4

The server is an IBM x3650 with 24Gb Ram, with 12 domU (2 paravirtualizzed and 10 fully virtualized), the guest system fully virtualized are FreeBSD 7.1 and 6.4 and there are 10 xenbrX on multiple vlan with a lot of network  traffic...
Sometime the server stops responding (freeze) and on console I haven't any messages for troubleshooting  ...I must reboot...and aren't any log messsage ...:( .. 

This problem has occurred since I installed two domU (freebsd) that have lot a network load and CPU...
this is my .cfg template..

######host.cfg#######
#os: FreeBSD 6.4
name = "host1"
builder = "hvm"
maxmem = "4000"
memory = "1500"
disk = [ 'phy:/dev/VG01/LV_host1,xvda,w' ]
vif = [ 'type=ioemu,bridge=xenbr241', 'type=ioemu,bridge=xenbr242' ]
device_model = "/usr/lib/xen/bin/qemu-dm"
kernel = "/usr/lib/xen/boot/hvmloader"
sdl=1
vnc=1
pae=0
boot="cd"
vcpus=4
acpi="0"
keymap='it'
######host.cfg#######

sorry for my english...

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel