The key setting in vmware is one regarding passing the timer reqs down to the real hardware. I don't remember the name but if its set to emulate the timer source rather than share the real one, it will break for sure. The other thing was the mode the network is in, there is on that is like a hub with the host box and that one duplicates the RTP traffic over a bridge vs the virtual interface mode that is more performant. That said we don't officially guarantee any results with virtual hosts but the community is encouraged to document their experiences here and on the wiki. On Tue, Sep 3, 2013 at 7:40 AM, Grant Bagdasarian <GB@cm.nl> wrote:
Hello,****
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Thank you all for your comments.****
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I’ve decided to use a separate VM host dedicated to Voice services. Our current physical box running FreeSWITCH will be re-installed with ESXi and will host 3 virtuals where FreeSWITCH will be installed on. Each having dedicated cores.****
I’m planning to do exactly what Michael Jerris suggested, but with SIPp generating load on the virtuals and calling in using X-Lite to measure the audio quality.****
This way I can simulate a (heavy) loaded host.****
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I’ll post the results once I have completed the tests.****
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Grant****
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*From:* freeswitch-users-bounces@lists.freeswitch.org [mailto: freeswitch-users-bounces@lists.freeswitch.org] *On Behalf Of *Michael Jerris *Sent:* Tuesday, September 3, 2013 2:15 PM *To:* FreeSWITCH Users Help *Subject:* Re: [Freeswitch-users] Running FS on a heavy loaded VMWare host ****
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Any voip running on a very heavily loaded VM host runs the risk of having audio issues. The question is, is it so heavily loaded that freeswitch will be starved of clock cycles or not. Testing it is the only way to see. Even if it is to some extent, things that don't need timing like regular bridged calls will be much more tolerant of some load than things that require more timing like playing sound files or conferences. I would test spinning up a bunch of channels and calling in and listening to a milliwatt tone to see if its clean or not.****
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Mike****
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On Sep 2, 2013, at 2:34 AM, Grant Bagdasarian <GB@cm.nl> wrote:****
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Hello,****
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I’ve been going through some threads about virtualization, some say it works for them, others say it doesn’t. Multiple platforms are used like MS Hyper-V, VM Ware, etc.****
We currently run FS on a physical box, which works great.****
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We have our own virtual environment, VMWare vSphere 5.0. Our 5.0 environment is running under heavy load and I was wondering would FS (configured properly for correct timing) still function properly and able to handle hundreds of concurrent calls on a heavy loaded VMWare host? The FS virtual will also process RTP in default mode. I was hoping if someone had any experience using this setup and could give me some insights on this matter. The FS virtuals will function only as SBC’s, so no complex dial plans, no call recording, no conferencing. Just bridging the incoming call leg with an outgoing one.****
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VMWare has a tech paper about running VoIP on their virtual machine, and they claim it works. ( http://www.vmware.com/files/pdf/techpaper/voip-perf-vsphere5.pdf). In the paper they used Mitel vMCD, but I’m not sure if the software has been optimized to run on VMWare so the tests would come out better than running any other telephony software like FreeSwitch or Asterisk.****
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Grant****
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_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
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