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 <demoni...@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 > > -- > _____________________________________________________________________ > -- 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