I have several winxp machines defined, and they all seem to be working
fine.
My main server has 4GB of ram, and each of the client is allocated 384 MB.
For some reason once I have 4 machines up, it runs out of memory.
#free -m
total used free shared buffers cached
Mem: 3896 210 3685 0 3 19
-/+ buffers/cache: 187 3708
Swap: 7624 0 7624
#xm list
Name ID Mem VCPUs State
Time(s)
Domain-0 0 3896 2 r----- 11.2
#xm info
host : xen-testbed
release : 2.6.16.52-xen
version : #7 SMP Thu Aug 16 19:41:09 CDT 2007
machine : x86_64
nr_cpus : 2
nr_nodes : 1
sockets_per_node : 1
cores_per_socket : 2
threads_per_core : 1
cpu_mhz : 2812
hw_caps :
178bfbff:ebd3fbff:00000000:00000010:00002001:00000000:0000001f
total_memory : 4094
free_memory : 127
xen_major : 3
xen_minor : 0
xen_extra : .4-1
xen_caps : xen-3.0-x86_64 hvm-3.0-x86_32 hvm-3.0-x86_32p
hvm-3.0-x86_64
xen_pagesize : 4096
platform_params : virt_start=0xffff800000000000
xen_changeset : unavailable
cc_compiler : gcc version 3.4.6 (Gentoo Hardened 3.4.6-r2 p1.5,
ssp-3.4.6-1.0
cc_compile_by : root
cc_compile_domain : (none)
cc_compile_date : Thu Aug 9 16:21:48 CDT 2007
xend_config_format : 3
then I create 4 winxp machines with the same specs...
#xm list
Name ID Mem VCPUs State
Time(s)
Domain-0 0 2423 2 r----- 30.8
winxp 1 392 1 -b---- 5.5
winxp2 2 392 1 ------ 4.2
winxp3 3 392 1 ------ 3.8
winxp4 4 392 1 r----- 1.5
now when I run
#free -m total used free shared buffers
cached
Mem: 2423 314 2108 0 6 97
-/+ buffers/cache: 210 2212
Swap: 7624 0 7624
and when I try to create a 5th machine, I get an out of memory error.
Now, am I not understanding something, but why is my system memory dropping
to 2423 in this case, should the total memory be constance at 4gb, it also
claimes to have 2108 free (which makes sense if the system had 4gb) but then
it claims it doesn''t have enough memory to allocate the 384 for the 5th
machine.
Xm info on the other hand, still sees 4g, and has 401 Ram free. I''m
not
sure why starting 4 machines with 384 mb, would drop the memory so much. Am
I not understanding something, or missing something obvious? Please help.
#xm info
host : xen-testbed
release : 2.6.16.52-xen
version : #7 SMP Thu Aug 16 19:41:09 CDT 2007
machine : x86_64
nr_cpus : 2
nr_nodes : 1
sockets_per_node : 1
cores_per_socket : 2
threads_per_core : 1
cpu_mhz : 2812
hw_caps :
178bfbff:ebd3fbff:00000000:00000010:00002001:00000000:0000001f
total_memory : 4094
free_memory : 401
xen_major : 3
xen_minor : 0
xen_extra : .4-1
xen_caps : xen-3.0-x86_64 hvm-3.0-x86_32 hvm-3.0-x86_32p
hvm-3.0-x86_64
xen_pagesize : 4096
platform_params : virt_start=0xffff800000000000
xen_changeset : unavailable
cc_compiler : gcc version 3.4.6 (Gentoo Hardened 3.4.6-r2 p1.5,
ssp-3.4.6-1.0
cc_compile_by : root
cc_compile_domain : (none)
cc_compile_date : Thu Aug 9 16:21:48 CDT 2007
xend_config_format : 3
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This looks like a memory baolloning problem. It has some problem in continuous memory allocation for the domain. You could try one thing , set dom0 memory to 1024M using dom0_mem=1024M then try to create the domains then it could not be in memory allocation problem. You have to pass to dom0_mem=1024M to dom0 kernel command line arguments and reboot the machine. Mostly this will resolve the probelm Thanks, Trilok On 8/18/07, Samir Faci <samir.list@gmail.com> wrote:> > I have several winxp machines defined, and they all seem to be working > fine. > > My main server has 4GB of ram, and each of the client is allocated 384 MB. > > For some reason once I have 4 machines up, it runs out of memory. > > #free -m > > total used free shared buffers cached > Mem: 3896 210 3685 0 3 19 > -/+ buffers/cache: 187 3708 > Swap: 7624 0 7624 > > > #xm list > Name ID Mem VCPUs State > Time(s) > Domain-0 0 3896 2 r----- > 11.2 > > > #xm info > > host : xen-testbed > release : 2.6.16.52-xen > version : #7 SMP Thu Aug 16 19:41:09 CDT 2007 > machine : x86_64 > nr_cpus : 2 > nr_nodes : 1 > sockets_per_node : 1 > cores_per_socket : 2 > threads_per_core : 1 > cpu_mhz : 2812 > hw_caps : > 178bfbff:ebd3fbff:00000000:00000010:00002001:00000000:0000001f > total_memory : 4094 > free_memory : 127 > xen_major : 3 > xen_minor : 0 > xen_extra : .4-1 > xen_caps : xen-3.0-x86_64 hvm-3.0-x86_32 hvm-3.0-x86_32p > hvm-3.0-x86_64 > xen_pagesize : 4096 > platform_params : virt_start=0xffff800000000000 > xen_changeset : unavailable > cc_compiler : gcc version 3.4.6 (Gentoo Hardened 3.4.6-r2 p1.5, > ssp-3.4.6-1.0 > cc_compile_by : root > cc_compile_domain : (none) > cc_compile_date : Thu Aug 9 16:21:48 CDT 2007 > xend_config_format : 3 > > then I create 4 winxp machines with the same specs... > > #xm list > > Name ID Mem VCPUs State > Time(s) > Domain-0 0 2423 2 r----- > 30.8 > winxp 1 392 1 -b---- > 5.5 > winxp2 2 392 1 ------ > 4.2 > winxp3 3 392 1 ------ > 3.8 > winxp4 4 392 1 r----- > 1.5 > > now when I run > > #free -m total used free shared buffers > cached > Mem: 2423 314 2108 0 6 97 > -/+ buffers/cache: 210 2212 > Swap: 7624 0 7624 > > > and when I try to create a 5th machine, I get an out of memory error. > > Now, am I not understanding something, but why is my system memory > dropping to 2423 in this case, should the total memory be constance at 4gb, > it also claimes to have 2108 free (which makes sense if the system had 4gb) > but then it claims it doesn''t have enough memory to allocate the 384 for the > 5th machine. > > Xm info on the other hand, still sees 4g, and has 401 Ram free. I''m not > sure why starting 4 machines with 384 mb, would drop the memory so much. Am > I not understanding something, or missing something obvious? Please help. > > > #xm info > host : xen-testbed > release : 2.6.16.52-xen > version : #7 SMP Thu Aug 16 19:41:09 CDT 2007 > machine : x86_64 > nr_cpus : 2 > nr_nodes : 1 > sockets_per_node : 1 > cores_per_socket : 2 > threads_per_core : 1 > cpu_mhz : 2812 > hw_caps : > 178bfbff:ebd3fbff:00000000:00000010:00002001:00000000:0000001f > total_memory : 4094 > free_memory : 401 > xen_major : 3 > xen_minor : 0 > xen_extra : .4-1 > xen_caps : xen-3.0-x86_64 hvm-3.0-x86_32 hvm-3.0-x86_32p > hvm-3.0-x86_64 > xen_pagesize : 4096 > platform_params : virt_start=0xffff800000000000 > xen_changeset : unavailable > cc_compiler : gcc version 3.4.6 (Gentoo Hardened 3.4.6-r2 p1.5, > ssp-3.4.6-1.0 > cc_compile_by : root > cc_compile_domain : (none) > cc_compile_date : Thu Aug 9 16:21:48 CDT 2007 > xend_config_format : 3 > > > > > > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users