org/page/Virtio/Block/Latency#Performance_data)
>> but it seems to be out of date. Does it
>> (http://repo.or.cz/qemu-kvm/stefanha.git/shortlog/refs/heads/tracing-dev-0.12.4)
>> still work on QEMU 2.4.1?
>
> The details are out of date but the general approach to tracing the
certainly throw in a few more
scenarios. Do we want to stick with powers of 2 or some other strategy?
--
Karl Rister <kris...@redhat.com>
rt it [Paolo]
> * Added run_poll_handlers_begin/end trace events for perf analysis
> * Sorry, Christian, no virtqueue kick suppression yet
>
> Recent performance investigation work done by Karl Rister shows that the
> guest->host notification takes around 20 us. This is more than t
On 11/15/2016 04:32 AM, Stefan Hajnoczi wrote:
> On Mon, Nov 14, 2016 at 09:52:00PM +0100, Paolo Bonzini wrote:
>> On 14/11/2016 21:12, Karl Rister wrote:
>>> 25646,929
>>> 51235,627
>>>1,02446,47
On 11/14/2016 09:26 AM, Stefan Hajnoczi wrote:
> On Fri, Nov 11, 2016 at 01:59:25PM -0600, Karl Rister wrote:
>> On 11/09/2016 11:13 AM, Stefan Hajnoczi wrote:
>>> Recent performance investigation work done by Karl Rister shows that the
>>> guest->host n
On 11/14/2016 09:26 AM, Stefan Hajnoczi wrote:
> On Fri, Nov 11, 2016 at 01:59:25PM -0600, Karl Rister wrote:
>> On 11/09/2016 11:13 AM, Stefan Hajnoczi wrote:
>>> Recent performance investigation work done by Karl Rister shows that the
>>> guest->host n
On 11/14/2016 07:53 AM, Fam Zheng wrote:
> On Fri, 11/11 13:59, Karl Rister wrote:
>>
>> Stefan
>>
>> I ran some quick tests with your patches and got some pretty good gains,
>> but also some seemingly odd behavior.
>>
>> These results are for a 5 m
On 11/09/2016 11:13 AM, Stefan Hajnoczi wrote:
> Recent performance investigation work done by Karl Rister shows that the
> guest->host notification takes around 20 us. This is more than the "overhead"
> of QEMU itself (e.g. block layer).
>
> One way to avoid the c
On 06/09/2014 08:40 PM, Fam Zheng wrote:
On Mon, 06/09 15:43, Karl Rister wrote:
Hi All
I was asked by our development team to do a performance sniff test of the
latest dataplane code on s390 and compare it against qemu.git. Here is a
brief description of the configuration, the testing done
is an efficiency calculation of usage per MB of
throughput.
--
Karl Rister k...@us.ibm.com
IBM Linux/KVM Development Optimization
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