[one-users] Incorrect monitoring stats?

[Gordon Wells]

Hi

I seem to have found a way around this, by running "xm mem-set 0 500"
on the nodes FMEM seems to drop back to the original value after
shutting down a VM. There doesn't seem to be load-balancing though,
the first node gets filled with vms before they get run on the second
(using either schedular). Is this correct?

Regards
--


Gordon Wells
Bioinformatics and Computational Biology Unit
Department of Biochemistry
University of Pretoria /
High Performance Computing Research group
Meraka Institute
CSIR

The first principle is that you must not fool yourself -- and you are
the easiest person to fool. So you have to be very careful about that.
After you've not fooled yourself, it's easy not to fool other
scientists. You just have to be honest in a conventional way after
that.

-- Richard Feynman




2009/6/15 Gordon Wells <gordon.wells at gmail.com>:
> Hi
>
> I'm using Scientific Linux 5.2 with xen. Will have a look at the
> memory/ballooning situation.
>
> Regards
>
> --
>
>
> Gordon Wells
> Bioinformatics and Computational Biology Unit
> Department of Biochemistry
> University of Pretoria /
> High Performance Computing Research group
> Meraka Institute
> CSIR
>
> The first principle is that you must not fool yourself -- and you are
> the easiest person to fool. So you have to be very careful about that.
> After you've not fooled yourself, it's easy not to fool other
> scientists. You just have to be honest in a conventional way after
> that.
>
> -- Richard Feynman
>
>
>
>
> 2009/6/12 Ruben S. Montero <rubensm at dacya.ucm.es>:
>> Hi Gordon
>>
>> With Xen, you can have problems if the Dom0 memory is not set to a
>> "low" value. The information that can be obtained from xen varies from
>> version to version so is difficult to get the available memory when
>> using ballooning. If you are using KVM this should not happen and this
>> is a bug, could you tell us the Linux version you are using...
>>
>> In the meantime, if you have enough memory for the VMs you can use the
>> onevm deploy command to start VMs directly on a given host.
>>
>> Cheers
>>
>> Ruben
>>
>> On Tue, Jun 9, 2009 at 9:41 AM, Gordon Wells <gordon.wells at gmail.com> wrote:
>>> Hi
>>>
>>> I seem to be getting the wrong info from "onehost list"
>>>
>>> TMEM = 4062208 and FMEM = 392192
>>>
>>> Yet /proc/meminfo says:
>>>
>>> MemTotal:      3593216 kB
>>> MemFree:       3037364 kB
>>> Buffers:         33088 kB
>>> Cached:         288536 kB
>>> SwapCached:          0 kB
>>> Active:          73624 kB
>>> Inactive:       279620 kB
>>> HighTotal:           0 kB
>>> HighFree:            0 kB
>>> LowTotal:      3593216 kB
>>> LowFree:       3037364 kB
>>> SwapTotal:     2031608 kB
>>> SwapFree:      2031608 kB
>>> Dirty:             724 kB
>>> Writeback:           0 kB
>>> AnonPages:       31596 kB
>>> Mapped:           8424 kB
>>> Slab:            28020 kB
>>> PageTables:       4208 kB
>>> NFS_Unstable:        0 kB
>>> Bounce:              0 kB
>>> CommitLimit:   3828216 kB
>>> Committed_AS:   225328 kB
>>> VmallocTotal: 34359738367 kB
>>> VmallocUsed:      2020 kB
>>> VmallocChunk: 34359735827 kB
>>>
>>> As far as I can there is more than enough memory to run vms (1Gb
>>> requested). These incorrect values seem to be preventing ON from doing
>>> proper load balancing (or running the vms at all).
>>>
>>> Regards
>>> Gordon
>>> --
>>>
>>>
>>> Gordon Wells
>>> Bioinformatics and Computational Biology Unit
>>> Department of Biochemistry
>>> University of Pretoria /
>>> High Performance Computing Research group
>>> Meraka Institute
>>> CSIR
>>>
>>> The first principle is that you must not fool yourself -- and you are
>>> the easiest person to fool. So you have to be very careful about that.
>>> After you've not fooled yourself, it's easy not to fool other
>>> scientists. You just have to be honest in a conventional way after
>>> that.
>>>
>>> -- Richard Feynman
>>> _______________________________________________
>>> Users mailing list
>>> Users at lists.opennebula.org
>>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>>>
>>
>>
>>
>> --
>> +---------------------------------------------------------------+
>>  Dr. Ruben Santiago Montero
>>  Associate Professor
>>  Distributed System Architecture Group (http://dsa-research.org)
>>
>>  URL:    http://dsa-research.org/doku.php?id=people:ruben
>>  Weblog: http://blog.dsa-research.org/?author=7
>>
>>  GridWay, http://www.gridway.org
>>  OpenNebula, http://www.opennebula.org
>> +---------------------------------------------------------------+
>>
>