Bug#625217: xen-linux-system-2.6.32-5-xen-amd64: Heavy load on domU causes dom0 to run out of memory
Hi,
The maschine has 12G of RAM. For dom0 I tried several configurations -
4G with balloning enabled, at least 1G statically assigned. DomUs have
different memory settings.
xm info | grep mem:
total_memory : 12224
free_memory : 1589
node_to_memory : node0:1077
node_to_dma32_mem : node0:1074
xen_commandline : placeholder dom0_mem=1024M dom0_max_vcpus=2
dom0_vcpus_pin
dom0 free -m:
total used free shared buffers cached
Mem: 1019 1008 10 0 249 528
-/+ buffers/cache: 231 788
Swap: 1913 29 1884
xm list:
Name ID Mem VCPUs State
Time(s)
Domain-0 0 1019 2 r-----
12087.5
alfresco 1 3096 1 -b----
57.0
destiny 3 384 1 -b----
919.5
hudson32 4 384 1 -b----
165.2
hudson64 5 1536 1 -b----
2697.1
ms2cistage 7 2048 1 -b----
10.5
ms2istage 6 2048 1 -b----
19.1
Thanks
Sebastian
Am 02.05.2011 19:35, schrieb Ben Hutchings:
> On Mon, 2011-05-02 at 16:50 +0200, Sebastian Hofmann wrote:
>> Package: xen-linux-system-2.6.32-5-xen-amd64
>> Version: 2.6.32-31
>> Severity: critical
>> Justification: breaks the whole system
>>
>> Hi,
>>
>> I have 64 bit xen kernel from squeeze installed on a dual xeon
>> maschine. Usually everything runs fine until it comes to heavy load on
>> a domU with high I/O and memory consumption.
>> This causes the dom0 to run out of memory and to kill several
>> processes (see log below). As a consequence of this, the whole system
>> becomes unusable.
>>
>> I tried several things like assign dedicated memory to dom0, disable
>> balloning, increase scheduler domain weights and assigned dedicated
>> CPUs to dom0 as described in
>> http://wiki.xensource.com/xenwiki/XenBestPractices but had no success.
>>
>> I think a domU should never break the whole system, so this might be a
>> bug. Please let me know if you need further information.
> [...]
>
> How much physical RAM is in the system and how much memory do you assign
> to each domain?
>
> Ben.
>
--
--------------------------------------
M.Sc. Sebastian Hofmann
SOURCEPARK GmbH
Hohenzollerndamm 150 Haus 7a
14199 Berlin
Tel: +49 (0)30/398 068 30
Fax: +49 (0)30/398 068 39
e-mail: sebastian.hofmann@sourcepark.de
www: www.sourcepark.de
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Sitz der Gesellschaft: Berlin / Amtsgericht Charlottenburg
HRB 80254
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