Open Stack

I just ran iperf and here is the results, bi-directional

[ ID] Interval       Transfer     Bandwidth
[  5]  0.0-10.0 sec  1.04 GBytes   895 Mbits/sec
[  4]  0.0-10.0 sec  1.09 GBytes   935 Mbits/sec

Look like when guest is under load, it can't handle traffic and start
dropping packets.



On Thu, Dec 17, 2015 at 11:36 AM, Vahric Muhtaryan <vahric at doruk.net.tr> wrote:
> Maybe this also could be reference
>
> http://42.62.73.30/wordpress/wp-content/uploads/2013/10/Neutron-performance
> -testing.pdf
>
>
> On 17/12/15 18:32, "Satish Patel" <satish.txt at gmail.com> wrote:
>
>>We have our own custom application running on guest VM. i am just
>>checking performance of VM. but i found if load go little up machine
>>start breaking ping.
>>
>>I didn't run iperf test yet. which i am going to run in a min.
>>
>>On Thu, Dec 17, 2015 at 11:28 AM, Vahric Muhtaryan <vahric at doruk.net.tr>
>>wrote:
>>> Okay Satish ,
>>>
>>> Im not expert and do not want to divert you wrong direction.
>>> I want to make your test on my server to cross check , can you pls
>>>explain
>>> how and with what tool and to where you are making this test.
>>>
>>> Regards
>>> VM
>>>
>>> On 17/12/15 18:11, "Satish Patel" <satish.txt at gmail.com> wrote:
>>>
>>>>Thanks for reply,
>>>>
>>>>Following is my guest xml file.
>>>>
>>>>I am using Openstack JUNO and it use  OVS.
>>>>
>>>><interface type='bridge'>
>>>>      <mac address='fa:16:3e:cd:2a:a4'/>
>>>>      <source bridge='qbrdd55b834-f8'/>
>>>>      <target dev='tapdd55b834-f8'/>
>>>>      <model type='virtio'/>
>>>>      <alias name='net0'/>
>>>>      <address type='pci' domain='0x0000' bus='0x00' slot='0x03'
>>>>function='0x0'/>
>>>>    </interface>
>>>>
>>>>
>>>>Following is TOP command on guest machine, at this point i am getting
>>>>ping breaks
>>>>
>>>>top - 16:10:30 up 20:46,  1 user,  load average: 4.63, 4.41, 3.60
>>>>Tasks: 165 total,   6 running, 159 sleeping,   0 stopped,   0 zombie
>>>>%Cpu0  : 15.1 us, 12.3 sy,  0.0 ni, 60.9 id,  0.0 wa,  0.0 hi,  0.3 si,
>>>>11.4 st
>>>>%Cpu1  : 22.9 us, 17.2 sy,  0.0 ni, 51.4 id,  0.0 wa,  0.0 hi,  0.3 si,
>>>>8.2 st
>>>>%Cpu2  : 28.8 us, 22.4 sy,  0.0 ni, 47.5 id,  0.0 wa,  0.0 hi,  1.0 si,
>>>>0.3 st
>>>>%Cpu3  : 16.6 us, 15.0 sy,  0.0 ni, 66.4 id,  0.0 wa,  0.0 hi,  0.3 si,
>>>>1.7 st
>>>>%Cpu4  :  9.8 us, 11.8 sy,  0.0 ni,  0.0 id, 75.4 wa,  0.0 hi,  0.3 si,
>>>>2.6 st
>>>>%Cpu5  :  7.6 us,  6.1 sy,  0.0 ni, 81.4 id,  0.0 wa,  0.0 hi,  4.2 si,
>>>>0.8 st
>>>>%Cpu6  :  8.1 us,  7.4 sy,  0.0 ni, 83.0 id,  0.0 wa,  0.0 hi,  1.4 si,
>>>>0.0 st
>>>>%Cpu7  : 17.8 us, 17.8 sy,  0.0 ni, 64.1 id,  0.0 wa,  0.0 hi,  0.3 si,
>>>>0.0 st
>>>>KiB Mem :  8175332 total,  4630124 free,   653284 used,  2891924
>>>>buff/cache
>>>>KiB Swap:        0 total,        0 free,        0 used.  7131540 avail
>>>>Mem
>>>>
>>>>
>>>>On Thu, Dec 17, 2015 at 11:06 AM, Vahric Muhtaryan <vahric at doruk.net.tr>
>>>>wrote:
>>>>> Hello ,
>>>>>
>>>>> Cool !  Todays I am testing to but not such way just only KVM.
>>>>>
>>>>> Wonder 2/3 things ;
>>>>>
>>>>> 1) Are you using virtio?
>>>>> <model type='virtio¹/>
>>>>>
>>>>>
>>>>> 2) is your vm saturating %100 of cpu inside guest ?
>>>>>
>>>>> 3) Using OVS or bridge ?
>>>>>
>>>>> Regards
>>>>> Vahric Muhtaryan
>>>>>
>>>>> On 17/12/15 17:41, "Satish Patel" <satish.txt at gmail.com> wrote:
>>>>>
>>>>>>I am doing some testing on Openstack VM network performance. following
>>>>>>i am doing
>>>>>>
>>>>>>Comute node: 8 CPU / 32GB mem
>>>>>>VM instance: 8vCPU / 8GB mem
>>>>>>
>>>>>>when i am running heavy load application, immediate my ping started
>>>>>>breaking for VM.. but at same time if i ping Compute Host, its working
>>>>>>fine without any packet loss.
>>>>>>
>>>>>>I have disabled GSO/TSO setting on eth0 but still same result.  i have
>>>>>>notice when it reach 250mbps my ping start breaking...
>>>>>>
>>>>>>_______________________________________________
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>>>>>>Post to     : openstack at lists.openstack.org
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>>>>>
>>>>>
>>>
>>>
>
>