[asterisk-users] asterisk and Hyper-V

Mon Dec 18 04:22:33 CST 2017

To be honest we are a bit afraid to set 100% )), but we have tried to set
90% - no luck. I have also tested with 4.8 and 4.11 kernels - same results.
I will try with Centos 6 and kernel 3.10 to check if something changes.
VSwitch shows 1-2% load on the interfaces, and this host is not overloaded
at all, so I don't think the VM has some lack of resources.

пн, 18 дек. 2017 г. в 13:07, Dmitriy Ermakov <demonihin at gmail.com>:

> I am using CentOS 6, kernel 3.10 from elrepo.org kernels
> (3.10.102-1.el6.elrepo.x86_64).
> Asterisk version is 11.21.2 and Asterisk 13.X.X (I can't get it's version
> now).
>
> Is it possible that your network switches' interfaces which are connected
> to Hyper-V Server are 100% busy?
> It is possible that my installation works well because my Hyper-V server
> is not high-load server so it has plenty free CPU, Disk, Memory, Network
> resources to give them to Asterisk VM.
>
> Kseniya, could you try to reserve 100% of virtual CPUs for Asterisk VM
> (just to test this configuration)?
>
>
> I am sorry I don't have free hardware and time to test your Ubuntu 16,
> asterisk 13.1, kernel 4.4.0-104 configuration(
>
> On 18 Dec 2017 12:09 p.m., "Kseniya Blashchuk" <ksyblast at gmail.com> wrote:
>
>> Dmitry, are you using CentOS? What kernel version are you using? I will
>> try with the same to see if it can be also a kernel-related issue.
>>
>> пн, 18 дек. 2017 г. в 11:35, Kseniya Blashchuk <ksyblast at gmail.com>:
>>
>>> Thank you for a quick answer, Dmitry!
>>>
>>> We have tried the settings you suggested but nothing helped. The machine
>>> is running 4.4.0-104 kernel, 4 cores, Intel(R) Xeon(R) CPU E5-2620 v3 @
>>> 2.40GHz, clocksource is hyperv_clocksource_tsc_page, timing module is
>>> res_timing_timerfd.so. We have also tried to set 50% Reserve - no luck :(.
>>>
>>> пн, 18 дек. 2017 г. в 10:49, Dmitriy Ermakov <demonihin at gmail.com>:
>>>
>>>> Hi, Kseniya!
>>>>
>>>> I have three installations of Asterisk (as FreePBX but I think it is
>>>> not important). They work fine.
>>>>
>>>> I have made some settings in Asterisk and Hyper-V:
>>>>
>>>> Asterisk: timing interface - timerfd.
>>>>
>>>> Hyper-V:
>>>>
>>>>    1. Virtual Machine => Network Adapter => Hardware Acceleration =>
>>>>    Virtual Machine Queue - Disable it;
>>>>    2. Virtual Machine => Processor => Virtual Machine Reserve
>>>>    (percentage) - set at least 25% (if you have 4 virtual cores for your
>>>>    Asterisk). You can try to set reserve more or less then 25% - test it and,
>>>>    please, send email here;
>>>>    3. Virtual Machine => Integration Services => Time synchronisation
>>>>    - enable it.
>>>>
>>>> This settings helped me.
>>>>
>>>> Also check your Linux Kernel version - it must be 3.10 or newer. I saw
>>>> very bad "timing test" results on kernel 2.6.32.
>>>>
>>>> On 12/18/2017 10:26 AM, Kseniya Blashchuk wrote:
>>>>
>>>> Hi all!
>>>> Does anybody have experience with asterisk on Hyper-V? My test setup
>>>> with Ubuntu 16 and asterisk 13.1 (ubuntu repo) shows sound distortion. I
>>>> have analyzed the RTP flow with wireshark and I see high skew and delta
>>>> values when the traffic leaves the hypervisor, however everything is okay
>>>> when a capture is taken from a VM itself. I have read that there can be
>>>> timing problems with Hyper-V. I have tried to disable time sync with the
>>>> machine and tried different clocksources. I have also tried to change
>>>> asterisk timing interface to dahdi (dummy) - nothing helped so far. Hyper-V
>>>> version is 12p2.
>>>> Does anybody have a working setup with Hyper-V?
>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> С уважением, Дмитрий Ермаков
>>>>
>>>> --
>>>> _____________________________________________________________________
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>>>>
>>>> Check out the new Asterisk community forum at:
>>>> https://community.asterisk.org/
>>>>
>>>> New to Asterisk? Start here:
>>>>       https://wiki.asterisk.org/wiki/display/AST/Getting+Started
>>>>
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>>>>    http://lists.digium.com/mailman/listinfo/asterisk-users
>>>
>>>
>> --
>> _____________________________________________________________________
>> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
>>
>> Check out the new Asterisk community forum at:
>> https://community.asterisk.org/
>>
>> New to Asterisk? Start here:
>>       https://wiki.asterisk.org/wiki/display/AST/Getting+Started
>>
>> asterisk-users mailing list
>> To UNSUBSCRIBE or update options visit:
>>    http://lists.digium.com/mailman/listinfo/asterisk-users
>>
> --
> _____________________________________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
>
> Check out the new Asterisk community forum at:
> https://community.asterisk.org/
>
> New to Asterisk? Start here:
>       https://wiki.asterisk.org/wiki/display/AST/Getting+Started
>
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-users
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