Hi Michael and Paolo,
I read your patch[1] about better MWAIT emulation in the QEMU/KVM
Guest. As shown in [1], you mentioned that you were testing and would
post the idle
driver calling MWAIT in the QEMU/KVM Guest to avoid VM exits. However,
I could not find that idle driver. I appreciate if you
On Mon, Jan 16, 2017 at 10:00 AM, Karl Rister wrote:
> On 01/16/2017 07:15 AM, Stefan Hajnoczi wrote:
>> On Tue, Jan 03, 2017 at 12:02:14PM -0500, Weiwei Jia wrote:
>>>> The expensive part is the virtqueue kick. Recently we tried polling the
>>>> virtqueue ins
On Mon, Jan 16, 2017 at 8:15 AM, Stefan Hajnoczi wrote:
> On Tue, Jan 03, 2017 at 12:02:14PM -0500, Weiwei Jia wrote:
>> > The expensive part is the virtqueue kick. Recently we tried polling the
>> > virtqueue instead of waiting for the ioeventfd file descriptor and
Hi Stefan,
Thanks for your reply.
On Tue, Jan 3, 2017 at 10:50 AM, Stefan Hajnoczi wrote:
> On Thu, Dec 22, 2016 at 01:34:47AM -0500, Weiwei Jia wrote:
>> With QEMU x-data-plane, I find the performance has not been improved
>> very much. Please see following two settings.
>
in advance.
BTW, I have checked several times about my hardware configuration and
I think the throughput difference as above should be related to QEMU.
Maybe, I miss any configuration about QEMU.
Best,
Weiwei Jia
On Thu, Dec 22, 2016 at 5:01 PM, John Ferlan wrote:
>
>
> On 12/21/2016 12:11 PM, Weiwei Jia wrote:
>> Hi,
>>
>> I cannot add iothreads
>> (https://libvirt.org/formatdomain.html#elementsIOThreadsAllocation) in
>> the libvirt xml configuration file. Once I
On Thu, Dec 22, 2016 at 4:33 AM, Daniel P. Berrange wrote:
> On Wed, Dec 21, 2016 at 12:11:51PM -0500, Weiwei Jia wrote:
>> Hi,
>>
>> I cannot add iothreads
>> (https://libvirt.org/formatdomain.html#elementsIOThreadsAllocation) in
>> the libvirt xml configuration
On Thu, Dec 22, 2016 at 4:30 AM, Daniel P. Berrange wrote:
> On Thu, Dec 22, 2016 at 01:34:47AM -0500, Weiwei Jia wrote:
>> Hi,
>>
>> With QEMU x-data-plane, I find the performance has not been improved
>> very much. Please see following two settings.
>>
>>
you,
Weiwei Jia
Sorry to add my libvirt and qemu version.
Libvirt version: 2.4.0
QEMU version: 2.3.0
Thanks,
Weiwei Jia
On Wed, Dec 21, 2016 at 12:11 PM, Weiwei Jia wrote:
> Hi,
>
> I cannot add iothreads
> (https://libvirt.org/formatdomain.html#elementsIOThreadsAllocation) in
> the libvirt xm
I config 4 dedicated IOthreads for
one drive. Just like above, I want to start 4 IOthreads for
virtio-disk0. If true, is my config like above correct? Thank you.
Best,
Weiwei Jia
Got it. Thank you very much.
Best,
Weiwei Jia
On Mon, Dec 19, 2016 at 5:58 AM, Stefan Hajnoczi wrote:
> On Fri, Dec 16, 2016 at 04:42:54PM -0500, Weiwei Jia wrote:
>> Has x-data-plane been used (or accepted) widely in systems. I have
>> this concern since if it hasn't been
data-plane feature in systems?
Thanks,
Weiwei Jia
On Fri, Dec 16, 2016 at 9:32 AM, Weiwei Jia wrote:
> On Fri, Dec 16, 2016 at 4:48 AM, Stefan Hajnoczi wrote:
>> On Thu, Dec 15, 2016 at 11:04:23AM -0500, Weiwei Jia wrote:
>>> On Thu, Dec 15, 2016 at 3:06 AM, Stefan Hajnoczi
On Fri, Dec 16, 2016 at 4:48 AM, Stefan Hajnoczi wrote:
> On Thu, Dec 15, 2016 at 11:04:23AM -0500, Weiwei Jia wrote:
>> On Thu, Dec 15, 2016 at 3:06 AM, Stefan Hajnoczi wrote:
>> > On Thu, Dec 15, 2016 at 12:17:09AM -0500, Weiwei Jia wrote:
>> >> BTW, do we have a
I will try it later on. Thank you.
Best,
Weiwei Jia
On Thu, Dec 15, 2016 at 7:13 AM, Paolo Bonzini wrote:
>
>
> On 15/12/2016 09:04, Stefan Hajnoczi wrote:
>>> Does this feature only work for VirtIO? Does it work for SCSI or IDE?
>> This only works for virtio-blk and
On Thu, Dec 15, 2016 at 3:06 AM, Stefan Hajnoczi wrote:
> On Thu, Dec 15, 2016 at 12:17:09AM -0500, Weiwei Jia wrote:
>> BTW, do we have an example to show users how to config following
>> virtio-blk dataplane commands into XML configuration file?
>>
>> qemu -o
On Thu, Dec 15, 2016 at 3:04 AM, Stefan Hajnoczi wrote:
> On Wed, Dec 14, 2016 at 08:06:10PM -0500, Weiwei Jia wrote:
>> Hi Stefan,
>>
>> Thanks for your reply. Please see the inline replies.
>>
>> On Wed, Dec 14, 2016 at 2:31 PM, Stefan Hajnoczi wrote:
>&g
Thank you,
Weiwei Jia
Hi Stefan,
Thanks for your reply. Please see the inline replies.
On Wed, Dec 14, 2016 at 2:31 PM, Stefan Hajnoczi wrote:
> On Wed, Dec 14, 2016 at 12:58:11AM -0500, Weiwei Jia wrote:
>> I find the timeslice of vCPU thread in QEMU/KVM is unstable when there
>> are lots of rea
even though there are lots of I/O Read requests on it.
Thank you.
Best,
Weiwei Jia
Hi Pankaj Gupta,
Thanks for your reply. I have found the problem after debug Linux
Kernel. The problem is once there is I/O thread upon vCPU2 thread of
VM1, there will be some mutex (synchronization) produced so that it
will be preempted by vCPU2 thread of VM2. After I set
"/proc/sys/kernel/sched_
Hi everyone,
I am testing the timeslice of vCPU thread in QEMU/KVM. In principle,
the timeslice should be stable under following workload but it is
unstable after I do experiments with following workload. I appreciate
it if you can give me some suggestions. Thanks in advance.
Workload settings:
I
22 matches
Mail list logo
