Avi Kivity wrote:
> Affinity control is probably useful mostly for numa configurations,
> where you want to restrict virtual cpus to run on the cores closest to
> memory. However it may well be that the scheduler is already good
> enough to do this on its own.
In that case, you need to use num
Avi Kivity wrote:
> Glauber Costa wrote:
>> Hi guys,
>>
>> Here's a first series of patch aiming at vcpu pinning support in qemu.
>> Ideally, as vcpu as just normal threads, the usual userspace tools can
>> be used
>> to set cpu affinities mask.
>>
>> However, It makes it very difficult to _start_
Anthony Liguori wrote:
> Glauber Costa wrote:
>> Anthony Liguori wrote:
>>
>> No, it can't. Because at the time qemu starts, no vcpu -> thread id
>> relationship exists at all. And we don't know when it will.
>
> Sure we do. The vcpu -> thread id relationship is valid after
> kvm_init_ap() is c
Anthony Liguori wrote:
> Glauber Costa wrote:
>
>> Anthony Liguori wrote:
>>
>> No, it can't. Because at the time qemu starts, no vcpu -> thread id
>> relationship exists at all. And we don't know when it will.
>>
>
> Sure we do. The vcpu -> thread id relationship is valid after
> kvm_in
Anthony Liguori wrote:
> Glauber Costa wrote:
>> My main interest is in management tools being able to specify pinning
>> set ups at VM creation time.
>>
>> As I said, it can be done through tools like taskset, but then you'd
>> have to know:
>> * when are the threads created
>> * which thread i
Glauber Costa wrote:
> Hi guys,
>
> Here's a first series of patch aiming at vcpu pinning support in qemu.
> Ideally, as vcpu as just normal threads, the usual userspace tools can be used
> to set cpu affinities mask.
>
> However, It makes it very difficult to _start_ a vm with vcpus pinned, since
Glauber Costa wrote:
> Anthony Liguori wrote:
>
> No, it can't. Because at the time qemu starts, no vcpu -> thread id
> relationship exists at all. And we don't know when it will.
Sure we do. The vcpu -> thread id relationship is valid after
kvm_init_ap() is called which is after machine init b
Daniel P. Berrange wrote:
> On Tue, Mar 04, 2008 at 01:28:24PM -0600, Anthony Liguori wrote:
>> Glauber Costa wrote:
>>> My main interest is in management tools being able to specify pinning
>>> set ups at VM creation time.
>>>
>>> As I said, it can be done through tools like taskset, but then you'
Anthony Liguori wrote:
> Glauber Costa wrote:
>> My main interest is in management tools being able to specify pinning
>> set ups at VM creation time.
>>
>> As I said, it can be done through tools like taskset, but then you'd
>> have to know:
>> * when are the threads created
>> * which thread i
On Tue, Mar 04, 2008 at 01:28:24PM -0600, Anthony Liguori wrote:
> Glauber Costa wrote:
> > My main interest is in management tools being able to specify pinning
> > set ups at VM creation time.
> >
> > As I said, it can be done through tools like taskset, but then you'd
> > have to know:
> > * w
Glauber Costa wrote:
> My main interest is in management tools being able to specify pinning
> set ups at VM creation time.
>
> As I said, it can be done through tools like taskset, but then you'd
> have to know:
> * when are the threads created
> * which thread ids corresponds to each cpu
>
> A
On Tue, Mar 04, 2008 at 03:11:27PM -0300, Glauber Costa wrote:
> Joerg Roedel wrote:
> >On Tue, Mar 04, 2008 at 01:21:53PM -0300, Glauber Costa wrote:
> >>Hi guys,
> >>
> >>Here's a first series of patch aiming at vcpu pinning support in qemu.
> >>Ideally, as vcpu as just normal threads, the usual
Joerg Roedel wrote:
> On Tue, Mar 04, 2008 at 01:21:53PM -0300, Glauber Costa wrote:
>> Hi guys,
>>
>> Here's a first series of patch aiming at vcpu pinning support in qemu.
>> Ideally, as vcpu as just normal threads, the usual userspace tools can be
>> used
>> to set cpu affinities mask.
>>
>> Ho
Anthony Liguori wrote:
> Glauber Costa wrote:
>> Hi guys,
>>
>> Here's a first series of patch aiming at vcpu pinning support in qemu.
>> Ideally, as vcpu as just normal threads, the usual userspace tools can
>> be used
>> to set cpu affinities mask.
>>
>> However, It makes it very difficult to _s
Glauber Costa wrote:
> Hi guys,
>
> Here's a first series of patch aiming at vcpu pinning support in qemu.
> Ideally, as vcpu as just normal threads, the usual userspace tools can be used
> to set cpu affinities mask.
>
> However, It makes it very difficult to _start_ a vm with vcpus pinned, since
On Tue, Mar 04, 2008 at 01:21:53PM -0300, Glauber Costa wrote:
> Hi guys,
>
> Here's a first series of patch aiming at vcpu pinning support in qemu.
> Ideally, as vcpu as just normal threads, the usual userspace tools can be used
> to set cpu affinities mask.
>
> However, It makes it very difficu
Hi guys,
Here's a first series of patch aiming at vcpu pinning support in qemu.
Ideally, as vcpu as just normal threads, the usual userspace tools can be used
to set cpu affinities mask.
However, It makes it very difficult to _start_ a vm with vcpus pinned, since
we don't know the thread ids from
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