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 <[email protected]>: > 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 <[email protected]>: > >> 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 >> >> -- >> _____________________________________________________________________ >> -- 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
