[ovirt-users] Re: High Performance VM: trouble using vNUMA and hugepages

2019-06-14 Thread Matthias Leopold 

https://bugzilla.redhat.com/show_bug.cgi?id=1720558

Am 13.06.19 um 15:42 schrieb Andrej Krejcir:

Hi,

this is probably a bug. Can you open a new ticket in Bugzilla?
https://bugzilla.redhat.com/enter_bug.cgi?product=ovirt-engine

As a workaround, if you are sure that the VM's NUMA configuration is 
compatible with the host's NUMA configuration, you could create a custom 
cluster scheduling policy and disable the "NUMA" filter. In 
Administration -> Configure -> Scheduling Policies.



Regards,
Andrej


On Thu, 13 Jun 2019 at 12:49, Matthias Leopold 
> wrote:

 > Hi,
 >
 > I'm having trouble using vNUMA and hugepages at the same time:
 >
 > - hypervisor host hast 2 CPU and 768G RAM
 > - hypervisor host is configured to allocate 512 1G hugepages
 > - VM configuration
 > * 2 virtual sockets, vCPUs are evenly pinned to 2 physical CPUs
 > * 512G RAM
 > * 2 vNUMA nodes that are pinned to the 2 host NUMA nodes
 > * custom property "hugepages=1048576"
 > - VM is the only VM on hypervisor host
 >
 > when I want to start the VM I'm getting the error message
 > "The host foo did not satisfy internal filter NUMA because cannot
 > accommodate memory of VM's pinned virtual NUMA nodes within host's
 > physical NUMA nodes"
 > VM start only works when VM memory is shrunk so that it fits in (host
 > memory - allocated huge pages)
 >
 > I don't understand why this happens. Can someone explain to me how this
 > is supposed to work?
 >
 > oVirt engine is 4.3.3
 > oVirt host is 4.3.4
 >
 > thanks
 > matthias

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[ovirt-users] Re: High Performance VM: trouble using vNUMA and hugepages

2019-06-13 Thread Matthias Leopold 

Hi,

thanks, this sounds good to me (in the sense of: I didn't make an 
obvious mistake). I'll open a bug report ASAP, probably tomorrow.


Regards
Matthias

Am 13.06.19 um 15:42 schrieb Andrej Krejcir:

Hi,

this is probably a bug. Can you open a new ticket in Bugzilla?
https://bugzilla.redhat.com/enter_bug.cgi?product=ovirt-engine

As a workaround, if you are sure that the VM's NUMA configuration is 
compatible with the host's NUMA configuration, you could create a custom 
cluster scheduling policy and disable the "NUMA" filter. In 
Administration -> Configure -> Scheduling Policies.



Regards,
Andrej


On Thu, 13 Jun 2019 at 12:49, Matthias Leopold 
> wrote:

 > Hi,
 >
 > I'm having trouble using vNUMA and hugepages at the same time:
 >
 > - hypervisor host hast 2 CPU and 768G RAM
 > - hypervisor host is configured to allocate 512 1G hugepages
 > - VM configuration
 > * 2 virtual sockets, vCPUs are evenly pinned to 2 physical CPUs
 > * 512G RAM
 > * 2 vNUMA nodes that are pinned to the 2 host NUMA nodes
 > * custom property "hugepages=1048576"
 > - VM is the only VM on hypervisor host
 >
 > when I want to start the VM I'm getting the error message
 > "The host foo did not satisfy internal filter NUMA because cannot
 > accommodate memory of VM's pinned virtual NUMA nodes within host's
 > physical NUMA nodes"
 > VM start only works when VM memory is shrunk so that it fits in (host
 > memory - allocated huge pages)
 >
 > I don't understand why this happens. Can someone explain to me how this
 > is supposed to work?
 >
 > oVirt engine is 4.3.3
 > oVirt host is 4.3.4
 >
 > thanks
 > matthias


--
Matthias Leopold
IT Systems & Communications
Medizinische Universität Wien
Spitalgasse 23 / BT 88 /Ebene 00
A-1090 Wien
Tel: +43 1 40160-21241
Fax: +43 1 40160-921200
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[ovirt-users] Re: High Performance VM: trouble using vNUMA and hugepages

2019-06-13 Thread Andrej Krejcir 
Hi,

this is probably a bug. Can you open a new ticket in Bugzilla?
https://bugzilla.redhat.com/enter_bug.cgi?product=ovirt-engine

As a workaround, if you are sure that the VM's NUMA configuration is
compatible with the host's NUMA configuration, you could create a custom
cluster scheduling policy and disable the "NUMA" filter. In Administration
-> Configure -> Scheduling Policies.


Regards,
Andrej


On Thu, 13 Jun 2019 at 12:49, Matthias Leopold <
matthias.leop...@meduniwien.ac.at> wrote:
> Hi,
>
> I'm having trouble using vNUMA and hugepages at the same time:
>
> - hypervisor host hast 2 CPU and 768G RAM
> - hypervisor host is configured to allocate 512 1G hugepages
> - VM configuration
> * 2 virtual sockets, vCPUs are evenly pinned to 2 physical CPUs
> * 512G RAM
> * 2 vNUMA nodes that are pinned to the 2 host NUMA nodes
> * custom property "hugepages=1048576"
> - VM is the only VM on hypervisor host
>
> when I want to start the VM I'm getting the error message
> "The host foo did not satisfy internal filter NUMA because cannot
> accommodate memory of VM's pinned virtual NUMA nodes within host's
> physical NUMA nodes"
> VM start only works when VM memory is shrunk so that it fits in (host
> memory - allocated huge pages)
>
> I don't understand why this happens. Can someone explain to me how this
> is supposed to work?
>
> oVirt engine is 4.3.3
> oVirt host is 4.3.4
>
> thanks
> matthias
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