On Tue, Feb 02, 2016 at 12:45:00PM +0100, Dario Faggioli wrote:
> On Thu, 2016-01-28 at 22:27 -0500, Konrad Rzeszutek Wilk wrote:
> > On Thu, Jan 28, 2016 at 03:10:57PM +, Dario Faggioli wrote:
> > >
> > > So, may I ask what piece of (Linux) code are we actually talking
> > > about?
> > >
On Fri, 2016-01-29 at 16:59 -0500, Elena Ufimtseva wrote:
>
> Hey Dario
>
> Please disregard the previous email with topology information.
> It was incorrect and I am attaching the topology that is actually
> result
> of Joao smt patches application.
>
Ok :-)
Well, this:
...
physical id :
On Thu, 2016-01-28 at 22:27 -0500, Konrad Rzeszutek Wilk wrote:
> On Thu, Jan 28, 2016 at 03:10:57PM +, Dario Faggioli wrote:
> >
> > So, may I ask what piece of (Linux) code are we actually talking
> > about?
> > Because I had a quick look, and could not find where what you
> > describe
> >
On Thu, Jan 28, 2016 at 09:46:46AM +, Dario Faggioli wrote:
> On Wed, 2016-01-27 at 11:03 -0500, Elena Ufimtseva wrote:
> > On Wed, Jan 27, 2016 at 10:27:01AM -0500, Konrad Rzeszutek Wilk
> > wrote:
> > > On Wed, Jan 27, 2016 at 03:10:01PM +, George Dunlap wrote:
> > > > On 27/01/16 14:33,
On Thu, Jan 28, 2016 at 09:55:45AM +, Dario Faggioli wrote:
> On Wed, 2016-01-27 at 15:53 +, George Dunlap wrote:
> > On 27/01/16 15:27, Konrad Rzeszutek Wilk wrote:
> > >
> > > So Elena started looking at the CPU bound and seeing how Xen
> > > behaves then
> > > and if we can improve the
On Wed, Jan 27, 2016 at 02:01:35PM +, Dario Faggioli wrote:
> On Fri, 2016-01-22 at 11:54 -0500, Elena Ufimtseva wrote:
> > Hello all!
> >
> Hey, here I am again,
>
> > Konrad came up with a workaround that was setting the flag for domain
> > scheduler in linux
> > As the guest is not aware
On Wed, 2016-01-27 at 11:03 -0500, Elena Ufimtseva wrote:
> On Wed, Jan 27, 2016 at 10:27:01AM -0500, Konrad Rzeszutek Wilk
> wrote:
> > On Wed, Jan 27, 2016 at 03:10:01PM +, George Dunlap wrote:
> > > On 27/01/16 14:33, Konrad Rzeszutek Wilk wrote:
> > > > On Tue, Jan 26, 2016 at 11:21:36AM
On Wed, 2016-01-27 at 15:53 +, George Dunlap wrote:
> On 27/01/16 15:27, Konrad Rzeszutek Wilk wrote:
> >
> > So Elena started looking at the CPU bound and seeing how Xen
> > behaves then
> > and if we can improve the floating situation as she saw some
> > abnormal
> > behavious.
>
> OK --
On Thu, Jan 28, 2016 at 03:10:57PM +, Dario Faggioli wrote:
> On Wed, 2016-01-27 at 10:27 -0500, Konrad Rzeszutek Wilk wrote:
> > On Wed, Jan 27, 2016 at 03:10:01PM +, George Dunlap wrote:
> > >
> > > I'm not sure I understand the situation right, but it sounds a bit
> > > like
> > > what
On Wed, 2016-01-27 at 10:27 -0500, Konrad Rzeszutek Wilk wrote:
> On Wed, Jan 27, 2016 at 03:10:01PM +, George Dunlap wrote:
> >
> > I'm not sure I understand the situation right, but it sounds a bit
> > like
> > what you're seeing is just a quirk of the fact that Linux doesn't
> > always
> >
On Wed, Jan 27, 2016 at 03:53:38PM +, George Dunlap wrote:
> On 27/01/16 15:27, Konrad Rzeszutek Wilk wrote:
> > On Wed, Jan 27, 2016 at 03:10:01PM +, George Dunlap wrote:
> >> On 27/01/16 14:33, Konrad Rzeszutek Wilk wrote:
> >>> On Xen - the schedule() would go HLT.. and then later be
On Wed, Jan 27, 2016 at 03:10:01PM +, George Dunlap wrote:
> On 27/01/16 14:33, Konrad Rzeszutek Wilk wrote:
> > On Tue, Jan 26, 2016 at 11:21:36AM +, George Dunlap wrote:
> >> On 22/01/16 16:54, Elena Ufimtseva wrote:
> >>> Hello all!
> >>>
> >>> Dario, Gerorge or anyone else, your help
On Wed, Jan 27, 2016 at 10:27:01AM -0500, Konrad Rzeszutek Wilk wrote:
> On Wed, Jan 27, 2016 at 03:10:01PM +, George Dunlap wrote:
> > On 27/01/16 14:33, Konrad Rzeszutek Wilk wrote:
> > > On Tue, Jan 26, 2016 at 11:21:36AM +, George Dunlap wrote:
> > >> On 22/01/16 16:54, Elena Ufimtseva
On 27/01/16 15:27, Konrad Rzeszutek Wilk wrote:
> On Wed, Jan 27, 2016 at 03:10:01PM +, George Dunlap wrote:
>> On 27/01/16 14:33, Konrad Rzeszutek Wilk wrote:
>>> On Xen - the schedule() would go HLT.. and then later be woken up by the
>>> VIRQ_TIMER. And since the two applications were on
On Fri, 2016-01-22 at 11:54 -0500, Elena Ufimtseva wrote:
> Hello all!
>
Hey, here I am again,
> Konrad came up with a workaround that was setting the flag for domain
> scheduler in linux
> As the guest is not aware of SMT-related topology, it has a flat
> topology initialized.
> Kernel has
On Tue, 2016-01-26 at 11:21 +, George Dunlap wrote:
> On 22/01/16 16:54, Elena Ufimtseva wrote:
> >
> Regarding placement wrt topology: If two threads are doing a large
> amount of communication, then putting them close in the topology will
> increase perfomance, because they share cache, and
On Tue, Jan 26, 2016 at 11:21:36AM +, George Dunlap wrote:
> On 22/01/16 16:54, Elena Ufimtseva wrote:
> > Hello all!
> >
> > Dario, Gerorge or anyone else, your help will be appreciated.
> >
> > Let me put some intro to our findings. I may forget something or put
> > something
> > not too
On 27/01/16 14:33, Konrad Rzeszutek Wilk wrote:
> On Tue, Jan 26, 2016 at 11:21:36AM +, George Dunlap wrote:
>> On 22/01/16 16:54, Elena Ufimtseva wrote:
>>> Hello all!
>>>
>>> Dario, Gerorge or anyone else, your help will be appreciated.
>>>
>>> Let me put some intro to our findings. I may
On 22/01/16 16:54, Elena Ufimtseva wrote:
> Hello all!
>
> Dario, Gerorge or anyone else, your help will be appreciated.
>
> Let me put some intro to our findings. I may forget something or put something
> not too explicit, please ask me.
>
> Customer filled a bug where some of the
On Fri, Jan 22, 2016 at 06:29:19PM +0100, Dario Faggioli wrote:
> On Fri, 2016-01-22 at 11:54 -0500, Elena Ufimtseva wrote:
> > Hello all!
> >
> Hello,
>
> > Let me put some intro to our findings. I may forget something or put
> > something
> > not too explicit, please ask me.
> >
> > Customer
On Fri, 2016-01-22 at 11:54 -0500, Elena Ufimtseva wrote:
> Hello all!
>
Hello,
> Let me put some intro to our findings. I may forget something or put
> something
> not too explicit, please ask me.
>
> Customer filled a bug where some of the applications were running
> slow in their HVM DomU
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