Hi all,
>>> Ray sessions dies and a bit later the complete machine (no ssh
>>> possible anymore). I checked the machine with
>>>
>>> prstat
>>> swap -s
>>>
>>> shortly before its death but found nothing unusal. Any idea what
>>> might cause this problem? The Ultra 20 with 4 GB should be able to
>>> host these two virtual machines that are doing close to nothing.
>>> Anyway both test machines froze after a while. Can anybody confirm
>>> this? Ideas to overcome this are very welcome!
>>>
>> How much memory have you assigned to the VM's? How much remains for
>> the host? It was explained here yesterday that each page a guest
>> touches is made non-swappable in the host. After a while, there may
>> be too little memory left for the host to operate, and since part
>> of each VM runs in host process space, they may freeze along with
>> other processes in the host.
>
> I have assigned 800 MB to each guest. With 4 GB RAM this leaves 2.4 GB
> to the OS. Should be sufficient!?
Here is the result of my latest tests. I have a Ultra 20 (1 x 250 GB
SATA, 4 GB RAM) with a ZFS / Solaris 10 u6 installation and am running
VirtualBox 2.1.0. One Solaris 10 image/guest is running fine. When I
start the second Solaris 10 image / guest, the machine gets
unresponsive (unusable slow).
prstat
==============================
PID USERNAME SIZE RSS STATE PRI NICE TIME CPU PROCESS/NLWP
2499 root 963M 886M sleep 60 0 3:35:52 0.6% VirtualBox/15
1288 root 91M 1084K sleep 59 -10 0:01:24 0.2% java/22
1089 noaccess 163M 680K sleep 59 0 0:01:28 0.2% java/19
4705 root 490M 419M sleep 59 0 0:03:51 0.2% VirtualBox/15
1834 utwww 274M 820K sleep 59 0 0:01:04 0.2% java/63
2082 root 50M 768K sleep 60 0 0:05:33 0.1% Xnewt/1
4702 root 3768K 196K cpu0 59 0 0:00:00 0.1% prstat/1
1862 root 24M 4012K sleep 59 0 0:00:34 0.1% Xorg/1
df -h
==============================
Filesystem size used avail capacity Mounted on
rpool/ROOT/s10x_u6wos_07b
228G 52G 170G 24% /
/devices 0K 0K 0K 0% /devices
ctfs 0K 0K 0K 0% /system/contract
proc 0K 0K 0K 0% /proc
mnttab 0K 0K 0K 0% /etc/mnttab
swap 3.1G 416K 3.1G 1% /etc/svc/volatile
objfs 0K 0K 0K 0% /system/object
sharefs 0K 0K 0K 0% /etc/dfs/sharetab
/usr/lib/libc/libc_hwcap2.so.1
222G 52G 170G 24% /lib/libc.so.1
fd 0K 0K 0K 0% /dev/fd
swap 3.1G 260K 3.1G 1% /tmp
swap 3.1G 32K 3.1G 1% /var/run
rpool/export 228G 19K 170G 1% /export
rpool/export/home 228G 18K 170G 1% /export/home
rpool 228G 35K 170G 1% /rpool
192.168.1.1:/home 34G 16G 18G 48% /home
iostat -D
==============================
sd0 sd1 nfs1 nfs2
rps wps util rps wps util rps wps util rps wps util
7 7 4.7 0 0 0.0 0 0 0.0 0 0 0.0
iostat -x 4
==============================
device r/s w/s kr/s kw/s wait actv svc_t %w %b
sd0 114.7 36.0 3634.8 2318.9 11.9 0.9 84.8 99 90
sd1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0
nfs1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0
nfs2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0
Both machines are configured to use 500 - 600 MB of RAM. What can I do?
Thanks,
Andreas
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