On Wed, Jul 25, 2012 at 12:12:55PM +0200, Paolo Bonzini wrote:
> Il 25/07/2012 11:56, Luigi Rizzo ha scritto:
> > On Wed, Jul 25, 2012 at 11:53:29AM +0300, Avi Kivity wrote:
> >> On 07/24/2012 07:58 PM, Luigi Rizzo wrote:
> >>> I noticed that the various NIC modules in qemu/kvm do not implement
> >
Il 25/07/2012 11:56, Luigi Rizzo ha scritto:
> On Wed, Jul 25, 2012 at 11:53:29AM +0300, Avi Kivity wrote:
>> On 07/24/2012 07:58 PM, Luigi Rizzo wrote:
>>> I noticed that the various NIC modules in qemu/kvm do not implement
>>> interrupt mitigation, which is very beneficial as it dramatically
>>>
On 07/25/2012 12:56 PM, Luigi Rizzo wrote:
>> Indeed. But please drop the #ifdef MITIGATIONs.
>
> Thanks for the comments. The #ifdef block MITIGATION was only temporary to
> point out the differences and run the performance comparisons.
Ok. In a patch, the '+' in front of a line serves that,
On Wed, Jul 25, 2012 at 11:53:29AM +0300, Avi Kivity wrote:
> On 07/24/2012 07:58 PM, Luigi Rizzo wrote:
> > I noticed that the various NIC modules in qemu/kvm do not implement
> > interrupt mitigation, which is very beneficial as it dramatically
> > reduces exits from the hypervisor.
> >
> > As a
On 07/24/2012 07:58 PM, Luigi Rizzo wrote:
> I noticed that the various NIC modules in qemu/kvm do not implement
> interrupt mitigation, which is very beneficial as it dramatically
> reduces exits from the hypervisor.
>
> As a proof of concept i tried to implement it for the e1000 driver
> (patch
On Tue, Jul 24, 2012 at 5:58 PM, Luigi Rizzo wrote:
> I noticed that the various NIC modules in qemu/kvm do not implement
> interrupt mitigation, which is very beneficial as it dramatically
> reduces exits from the hypervisor.
>
> As a proof of concept i tried to implement it for the e1000 driver
I noticed that the various NIC modules in qemu/kvm do not implement
interrupt mitigation, which is very beneficial as it dramatically
reduces exits from the hypervisor.
As a proof of concept i tried to implement it for the e1000 driver
(patch below), and it brings tx performance from 9 to 56Kpps o
