[Pacemaker] When a resource starts all at once in environment using utilization, score may not work

[Yuusuke Iida]

Hi, Yan

Thank you for reply.

(2011/10/25 18:01), Gao,Yan wrote:
> Hi Yuusuke,
>
> On 10/20/11 20:43, Yuusuke Iida wrote:
>> Hi, Yan
>>
>> (2011/09/26 17:46), Gao,Yan wrote:
>>> A glance to the transition. After grpPostgreSQLDB3 was assigned to act1,
>>> grpPostgreSQLDB1 was chosen to be processed, and it was assigned to act2
>>> (because it had no preference between act2 and act3). And then
>>> grpPostgreSQLDB2 went to act3.
>> Thank you for a reply.
>> The flow of the present placement understood it.
>>
>>>
>>> So the solution might be: After grpPostgreSQLDB3, process
>>> grpPostgreSQLDB2 first rather than grpPostgreSQLDB1. Though the
>>> problem is:
>>> Basing on what policy, we could choose grpPostgreSQLDB2 to process
>>> earlier than grpPostgreSQLDB1? Given the processing order was decided
>>> before assigning them all, i.e before assigning grpPostgreSQLDB3.
>> Though I thought in various ways, I did not hit on the good thought.
>> For example, I sort the order of resources that are not yet placed again
>> whenever I assign one resource.
> We cannot re-sort the order of the resources during iterating them to
> process.
I understood it.

>
> Will such a correction be difficult?
> Actually, I doubt we can find a optimal solution which is able to
> perfectly balance between the preference of resource location and the
> placement strategy, basing on the current mode of assignment. Perhaps
> only some optimization algorithm can resolve such problem.
The optimization algorithm does not occur to me.

Is this problem solved sometime?

Regards,
Yuusuke
>
> Regards,
>    Gaoyan

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Yuusuke Iida
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