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Posted to users@cloudstack.apache.org by Alessandro Caviglione <c....@gmail.com> on 2017/01/18 11:24:43 UTC
Host allocation
Hi guys,
just a question about host allocation.
My infrastructure is based on CS 4.5 and XS 6.5, host allocation is
"random" but I see that CS allocate hosts to completely fill the RAM.
I've some hosts with 148 GB RAM usable and 148 GB used, completely filled.
This obviously means that XS will swap to HD and instances performance is
reduced...
How can I tell to CS to allocate the hosts up to 90% its RAM?
Thank you!
Re: Host allocation
Posted by Alessandro Caviglione <c....@gmail.com>.
Yes but here I configure the cluster, not the host...
It should be a "memory.allocated.capacity.disablethreshold" setting for
every single host.... because
cluster.memory.allocated.capacity.disablethreshold
will disable the cluster allocation at 90% of the entire cluster, but I
could have some hosts filled (100%) and one at half (50%)...
Am I right?
On Wed, Jan 18, 2017 at 12:31 PM, Dag Sonstebo <Da...@shapeblue.com>
wrote:
> Hi Allessandro,
>
> To achieve this you would probably have to:
>
> - Set global setting “host.capacityType.to.order.clusters” to RAM
> (default is CPU)
> - Set *cluster setting* “cluster.memory.allocated.capacity.disablethreshold”
> to 0.90.
> - You may also want to review cluster settings cluster.cpu.allocated.capacity.disablethreshold,
> cluster.cpu.allocated.capacity.notificationthreshold and
> cluster.memory.allocated.capacity.notificationthreshold.
>
> Hope this helps.
>
> Regards,
> Dag Sonstebo
> Cloud Architect
> ShapeBlue
>
> On 18/01/2017, 11:24, "Alessandro Caviglione" <c....@gmail.com>
> wrote:
>
> Hi guys,
> just a question about host allocation.
> My infrastructure is based on CS 4.5 and XS 6.5, host allocation is
> "random" but I see that CS allocate hosts to completely fill the RAM.
> I've some hosts with 148 GB RAM usable and 148 GB used, completely
> filled.
> This obviously means that XS will swap to HD and instances performance
> is
> reduced...
> How can I tell to CS to allocate the hosts up to 90% its RAM?
>
> Thank you!
>
>
>
> Dag.Sonstebo@shapeblue.com
> www.shapeblue.com
> 53 Chandos Place, Covent Garden, London WC2N 4HSUK
> @shapeblue
>
>
>
>
Re: Host allocation
Posted by Dag Sonstebo <Da...@shapeblue.com>.
Hi Allessandro,
To achieve this you would probably have to:
- Set global setting “host.capacityType.to.order.clusters” to RAM (default is CPU)
- Set *cluster setting* “cluster.memory.allocated.capacity.disablethreshold” to 0.90.
- You may also want to review cluster settings cluster.cpu.allocated.capacity.disablethreshold, cluster.cpu.allocated.capacity.notificationthreshold and cluster.memory.allocated.capacity.notificationthreshold.
Hope this helps.
Regards,
Dag Sonstebo
Cloud Architect
ShapeBlue
On 18/01/2017, 11:24, "Alessandro Caviglione" <c....@gmail.com> wrote:
Hi guys,
just a question about host allocation.
My infrastructure is based on CS 4.5 and XS 6.5, host allocation is
"random" but I see that CS allocate hosts to completely fill the RAM.
I've some hosts with 148 GB RAM usable and 148 GB used, completely filled.
This obviously means that XS will swap to HD and instances performance is
reduced...
How can I tell to CS to allocate the hosts up to 90% its RAM?
Thank you!
Dag.Sonstebo@shapeblue.com
www.shapeblue.com
53 Chandos Place, Covent Garden, London WC2N 4HSUK
@shapeblue