[OmniOS-discuss] [smartos-discuss] kvm network performance survey

[John Barfield]

I can confirm that I’ve seen the same behaviors. 

I’ll try to pull some numbers but the truth is that debian based guest 
versions perform WAY better than CentOS guests. 

From all of my testing IMHO it is the host (illumos) virtio 
implementation. 

I only say this because I see such drastic performance results between 
different guest virtio driver version on illumos hosts that I do not see 
on Linux hosts. 

I can also confirm that I did not see this issue on SmartOS and I did 
test, Widows, Centos, And Ubuntu and was able to achieve near wire speed 
guest-2-guest on different SmartOS hosts.

Here is my original thread posted about this in march:
http://lists.omniti.com/pipermail/omnios-discuss/2015-March/004539.html




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On 4/11/15, 12:24 AM, "Tobias Oetiker" <tobi at oetiker.ch> wrote:

>Hi Nigel,
>
>Yesterday Nigel W wrote:
>
>> On Fri, Apr 10, 2015 at 7:52 AM, Tobias Oetiker <tobi at oetiker.ch> wrote:
>>
>> > Hi,
>> >
>> > For the past few months I have been struggling with bad KVM nework
>> > performance on omnios R12 and R14.  Especially under
>> > bidirectional load things are looking terrible (factor 1000).
>> >
>> > Every now and then there is a report on the mailinglist about such
>> > problems, but we have not yet seen anything really helpful.
>> >
>> > In my tests I have been using iperf to collect streaming tcp
>> > network performance on verious configurations.
>> >
>> > I realy want to see this solved. As an initial effort, I have setup
>> > a google spreadsheet to collect performance data. The sheet
>> > includes instructions on how to test and lets you record your test
>> > results:
>> >
>> >   http://goo.gl/Vr1tC6
>> >
>> > Please add your test results, or even better, figure out what is going
>> > wrong!
>> >
>> > cheers
>> > tobi
>> >
>> Is this measurement between the kvm guest and the host or the kvm guest
>> and another (presumably native) host on the network?
>
>
>the measurement is between the  kvm guest and the host where kvm is
>running on.
>
>cheers
>tobi
>
>>
>> Thanks,
>>
>>
>>
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>
>-- 
>Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
>www.oetiker.ch tobi at oetiker.ch +41 62 775 9902
>
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