Virtualisation and freeswitch
Hello list, le me introduce myself first, I am Grigoriy Dobrovolskyy currently working as voip administrator and call centeres integrator. I worked a lot with asterisk, i think Fs is a great software but not easy to learn. I have googled my question and did not found a clear answer. With what technology i can virtualise freeswitch without timer problems ? I know that i can use OpenVZ but it's more 'jail' then virtualisation. I heard that Amazon EC with High CPU instance works (confirm?) Can someone give me info of a succesfull installations with Conferences, Moh / mixing ? And a technology used ? Thank you.
I'm using Linode's VPS which is run on xen, and all tests (80 moh channels, playback into a conference) and light usage have been perfect. Some have complained of Amazon's high latency, others say it's been an awesome platform for them. The devs, and many using FreeSWITCH in high usage, will say to stay away from *all* virtualization for the best performance. -Avi On Fri, Jan 28, 2011 at 1:52 PM, Grygoriy Dobrovolskyy <megahohol@gmail.com>wrote:
Hello list, le me introduce myself first, I am Grigoriy Dobrovolskyy currently working as voip administrator and call centeres integrator. I worked a lot with asterisk, i think Fs is a great software but not easy to learn.
I have googled my question and did not found a clear answer.
With what technology i can virtualise freeswitch without timer problems ?
I know that i can use OpenVZ but it's more 'jail' then virtualisation. I heard that Amazon EC with High CPU instance works (confirm?)
Can someone give me info of a succesfull installations with Conferences, Moh / mixing ? And a technology used ?
Thank you.
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Hi On Jan 28, 2011, at 8:33 AM, Avi Marcus wrote:
I'm using Linode's VPS which is run on xen, and all tests (80 moh channels, playback into a conference) and light usage have been perfect. Some have complained of Amazon's high latency, others say it's been an awesome platform for them.
Can second this. Please see my other post just now on timing. I was running fine for a year before some changes to the kernel that I was running made it become a problem. I was able to hunt it down and fix it. --FC
openvz is by far the most reliable thanks to the jail vs virtual that you already pointed out. Other ones are mostly based on what people find out from experimenting. Getting the most accurate timer settings as Frank pointed out is essential. WE don't get much free time to play around with those so we rely on the community to do this type of pioneering. On Fri, Jan 28, 2011 at 1:03 PM, Frank Carmickle <frank@carmickle.com> wrote:
Hi
On Jan 28, 2011, at 8:33 AM, Avi Marcus wrote:
I'm using Linode's VPS which is run on xen, and all tests (80 moh channels, playback into a conference) and light usage have been perfect. Some have complained of Amazon's high latency, others say it's been an awesome platform for them.
Can second this. Please see my other post just now on timing. I was running fine for a year before some changes to the kernel that I was running made it become a problem. I was able to hunt it down and fix it.
--FC
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I have one small installation using Amazon EC with Medium instance ( 32 Bit but with 2 CPU) working without any customer complaints for more than 6 months, but when using default small instance I got a lot of complaints. Hope this helps. Thanks, Chris On Fri, Jan 28, 2011 at 6:52 AM, Grygoriy Dobrovolskyy <megahohol@gmail.com>wrote:
Hello list, le me introduce myself first, I am Grigoriy Dobrovolskyy currently working as voip administrator and call centeres integrator. I worked a lot with asterisk, i think Fs is a great software but not easy to learn.
I have googled my question and did not found a clear answer.
With what technology i can virtualise freeswitch without timer problems ?
I know that i can use OpenVZ but it's more 'jail' then virtualisation. I heard that Amazon EC with High CPU instance works (confirm?)
Can someone give me info of a succesfull installations with Conferences, Moh / mixing ? And a technology used ?
Thank you.
_______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
Chris, can you tell us how many concurrent calls and which applications you do with FreeSWITCH on this medium instance ? David Ponzone Direction Technique email: david.ponzone@ipeva.fr tel: 01 74 03 18 97 gsm: 06 66 98 76 34 Service Client IPeva tel: 0811 46 26 26 www.ipeva.fr - www.ipeva-studio.com Ce message et toutes les pièces jointes sont confidentiels et établis à l'intention exclusive de ses destinataires. Toute utilisation ou diffusion non autorisée est interdite. Tout message électronique est susceptible d'altération. IPeva décline toute responsabilité au titre de ce message s'il a été altéré, déformé ou falsifié. Si vous n'êtes pas destinataire de ce message, merci de le détruire immédiatement et d'avertir l'expéditeur. Le 28/01/2011 à 21:23, Chris Chen a écrit :
I have one small installation using Amazon EC with Medium instance ( 32 Bit but with 2 CPU) working without any customer complaints for more than 6 months, but when using default small instance I got a lot of complaints. Hope this helps.
Thanks, Chris
On Fri, Jan 28, 2011 at 6:52 AM, Grygoriy Dobrovolskyy <megahohol@gmail.com> wrote: Hello list, le me introduce myself first, I am Grigoriy Dobrovolskyy currently working as voip administrator and call centeres integrator. I worked a lot with asterisk, i think Fs is a great software but not easy to learn.
I have googled my question and did not found a clear answer.
With what technology i can virtualise freeswitch without timer problems ?
I know that i can use OpenVZ but it's more 'jail' then virtualisation. I heard that Amazon EC with High CPU instance works (confirm?)
Can someone give me info of a succesfull installations with Conferences, Moh / mixing ? And a technology used ?
Thank you.
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No fancy stuff, just standard applications such as IVR, voice mail, incoming calls and outgoing calls via SIP trunks, conference calls, although light usage but supporting multi-tenant as well. I would say most time cpu idle at 99-100%, while with small instance cpu idle between 50-99% which was not constant at all. And Amazon has very good Internet connectivity, from the instance (at east-US zone) to my home network always less than 30ms, which makes me feel like any decent MAN/WAN connection. I have no complaint at all. Thanks, Chris On Fri, Jan 28, 2011 at 3:25 PM, David Ponzone <david.ponzone@ipeva.fr>wrote:
Chris,
can you tell us how many concurrent calls and which applications you do with FreeSWITCH on this medium instance ?
David Ponzone Direction Technique email: david.ponzone@ipeva.fr tel: 01 74 03 18 97 gsm: 06 66 98 76 34
Service Client IPeva tel: 0811 46 26 26 www.ipeva.fr - www.ipeva-studio.com
*Ce message et toutes les pièces jointes sont confidentiels et établis à l'intention exclusive de ses destinataires. Toute utilisation ou diffusion non autorisée est interdite. Tout message électronique est susceptible d'altération. **IPeva** décline toute responsabilité au titre de ce message s'il a été altéré, déformé ou falsifié. Si vous n'êtes pas destinataire de ce message, merci de le détruire immédiatement et d'avertir l'expéditeur.* * *
Le 28/01/2011 à 21:23, Chris Chen a écrit :
I have one small installation using Amazon EC with Medium instance ( 32 Bit but with 2 CPU) working without any customer complaints for more than 6 months, but when using default small instance I got a lot of complaints. Hope this helps.
Thanks, Chris
On Fri, Jan 28, 2011 at 6:52 AM, Grygoriy Dobrovolskyy < megahohol@gmail.com> wrote:
Hello list, le me introduce myself first, I am Grigoriy Dobrovolskyy currently working as voip administrator and call centeres integrator. I worked a lot with asterisk, i think Fs is a great software but not easy to learn.
I have googled my question and did not found a clear answer.
With what technology i can virtualise freeswitch without timer problems ?
I know that i can use OpenVZ but it's more 'jail' then virtualisation. I heard that Amazon EC with High CPU instance works (confirm?)
Can someone give me info of a succesfull installations with Conferences, Moh / mixing ? And a technology used ?
Thank you.
_______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
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I found the problem with small instances in EC2 not to be CPU usage, but how acceptably bad your timing is allowed to be. If you dont handle media it will be fine. Amazon also seems to have issues matching small instances with higher resolution kernels. If anyone has a tip for that, Id like to hear it. The bottleneck in my system is the bandwidth of g711u channels well before the CPU, but the audio quality is poor even at small loads I assume from low resolution timing. On Fri, Jan 28, 2011 at 3:38 PM, Chris Chen <chris.chen2004@gmail.com>wrote:
No fancy stuff, just standard applications such as IVR, voice mail, incoming calls and outgoing calls via SIP trunks, conference calls, although light usage but supporting multi-tenant as well. I would say most time cpu idle at 99-100%, while with small instance cpu idle between 50-99% which was not constant at all. And Amazon has very good Internet connectivity, from the instance (at east-US zone) to my home network always less than 30ms, which makes me feel like any decent MAN/WAN connection. I have no complaint at all. Thanks, Chris
On Fri, Jan 28, 2011 at 3:25 PM, David Ponzone <david.ponzone@ipeva.fr>wrote:
Chris,
can you tell us how many concurrent calls and which applications you do with FreeSWITCH on this medium instance ?
David Ponzone Direction Technique email: david.ponzone@ipeva.fr tel: 01 74 03 18 97 gsm: 06 66 98 76 34
Service Client IPeva tel: 0811 46 26 26 www.ipeva.fr - www.ipeva-studio.com
*Ce message et toutes les pièces jointes sont confidentiels et établis à l'intention exclusive de ses destinataires. Toute utilisation ou diffusion non autorisée est interdite. Tout message électronique est susceptible d'altération. **IPeva** décline toute responsabilité au titre de ce message s'il a été altéré, déformé ou falsifié. Si vous n'êtes pas destinataire de ce message, merci de le détruire immédiatement et d'avertir l'expéditeur.* * *
Le 28/01/2011 à 21:23, Chris Chen a écrit :
I have one small installation using Amazon EC with Medium instance ( 32 Bit but with 2 CPU) working without any customer complaints for more than 6 months, but when using default small instance I got a lot of complaints. Hope this helps.
Thanks, Chris
On Fri, Jan 28, 2011 at 6:52 AM, Grygoriy Dobrovolskyy < megahohol@gmail.com> wrote:
Hello list, le me introduce myself first, I am Grigoriy Dobrovolskyy currently working as voip administrator and call centeres integrator. I worked a lot with asterisk, i think Fs is a great software but not easy to learn.
I have googled my question and did not found a clear answer.
With what technology i can virtualise freeswitch without timer problems ?
I know that i can use OpenVZ but it's more 'jail' then virtualisation. I heard that Amazon EC with High CPU instance works (confirm?)
Can someone give me info of a succesfull installations with Conferences, Moh / mixing ? And a technology used ?
Thank you.
_______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
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Why would it possibly matter if it's more of a 'jail' than 'virtualisation' ? Isn't the outcome the important thing ? In regards OpenVZ there is an ISO installer called Proxmox which helps you administer the whole system and gives you a pretty decent web interface for management. We use it extensively for voice applications. http://www.proxmox.com/products/proxmox-ve Brent On Fri, Jan 28, 2011 at 9:52 PM, Grygoriy Dobrovolskyy <megahohol@gmail.com>wrote:
Hello list, le me introduce myself first, I am Grigoriy Dobrovolskyy currently working as voip administrator and call centeres integrator. I worked a lot with asterisk, i think Fs is a great software but not easy to learn.
I have googled my question and did not found a clear answer.
With what technology i can virtualise freeswitch without timer problems ?
I know that i can use OpenVZ but it's more 'jail' then virtualisation. I heard that Amazon EC with High CPU instance works (confirm?)
Can someone give me info of a succesfull installations with Conferences, Moh / mixing ? And a technology used ?
Thank you.
_______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
-- -- Brent Paddon Director | Over the Wire Pty Ltd brent.paddon@overthewire.com.au | www.overthewire.com.au Phone: 07 3847 9292 | Fax: 07 3847 9696 | Mobile: 0400 2400 54
We had used OpenVZ for a while, it was good given we never tested on load. Another option besides OpenVZ is lxc , which is similar to OpenVZ. I runs some lxc VMs for other projects but never tried with FS. On Sat, Jan 29, 2011 at 6:03 AM, Brent Paddon <brent@overthewire.com.au> wrote:
Why would it possibly matter if it's more of a 'jail' than 'virtualisation' ? Isn't the outcome the important thing ? In regards OpenVZ there is an ISO installer called Proxmox which helps you administer the whole system and gives you a pretty decent web interface for management. We use it extensively for voice applications. http://www.proxmox.com/products/proxmox-ve Brent
On Fri, Jan 28, 2011 at 9:52 PM, Grygoriy Dobrovolskyy <megahohol@gmail.com> wrote:
Hello list, le me introduce myself first, I am Grigoriy Dobrovolskyy currently working as voip administrator and call centeres integrator. I worked a lot with asterisk, i think Fs is a great software but not easy to learn. I have googled my question and did not found a clear answer. With what technology i can virtualise freeswitch without timer problems ? I know that i can use OpenVZ but it's more 'jail' then virtualisation. I heard that Amazon EC with High CPU instance works (confirm?) Can someone give me info of a succesfull installations with Conferences, Moh / mixing ? And a technology used ? Thank you. _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
-- -- Brent Paddon
Director | Over the Wire Pty Ltd brent.paddon@overthewire.com.au | www.overthewire.com.au Phone: 07 3847 9292 | Fax: 07 3847 9696 | Mobile: 0400 2400 54
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-- About: http://about.me/dujinfang Blog: http://www.dujinfang.com Proj: http://www.freeswitch.org.cn
(from wiki http://wiki.freeswitch.org/wiki/Virtualization) if your FS running with high traffic please use /etc/vz/conf/ve-unlimited.conf-sample for default template Dome C. On Sat, Jan 29, 2011 at 7:23 AM, Seven Du <dujinfang@gmail.com> wrote:
We had used OpenVZ for a while, it was good given we never tested on load.
Another option besides OpenVZ is lxc , which is similar to OpenVZ. I runs some lxc VMs for other projects but never tried with FS.
On Sat, Jan 29, 2011 at 6:03 AM, Brent Paddon <brent@overthewire.com.au> wrote:
Why would it possibly matter if it's more of a 'jail' than 'virtualisation' ? Isn't the outcome the important thing ? In regards OpenVZ there is an ISO installer called Proxmox which helps you administer the whole system and gives you a pretty decent web interface for management. We use it extensively for voice applications. http://www.proxmox.com/products/proxmox-ve Brent
On Fri, Jan 28, 2011 at 9:52 PM, Grygoriy Dobrovolskyy <megahohol@gmail.com> wrote:
Hello list, le me introduce myself first, I am Grigoriy Dobrovolskyy currently working as voip administrator and call centeres integrator. I worked a lot with asterisk, i think Fs is a great software but not easy to learn. I have googled my question and did not found a clear answer. With what technology i can virtualise freeswitch without timer problems ? I know that i can use OpenVZ but it's more 'jail' then virtualisation. I heard that Amazon EC with High CPU instance works (confirm?) Can someone give me info of a succesfull installations with Conferences, Moh / mixing ? And a technology used ? Thank you. _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
-- -- Brent Paddon
Director | Over the Wire Pty Ltd brent.paddon@overthewire.com.au | www.overthewire.com.au Phone: 07 3847 9292 | Fax: 07 3847 9696 | Mobile: 0400 2400 54
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I noticed the wiki telling people not to use Xen, why is that? On Sat, Jan 29, 2011 at 1:30 AM, dome@tel.co.th <dome@tel.co.th> wrote:
(from wiki http://wiki.freeswitch.org/wiki/Virtualization) if your FS running with high traffic please use /etc/vz/conf/ve-unlimited.conf-sample for default template
Dome C.
On Sat, Jan 29, 2011 at 7:23 AM, Seven Du <dujinfang@gmail.com> wrote:
We had used OpenVZ for a while, it was good given we never tested on load.
Another option besides OpenVZ is lxc , which is similar to OpenVZ. I runs some lxc VMs for other projects but never tried with FS.
On Sat, Jan 29, 2011 at 6:03 AM, Brent Paddon <brent@overthewire.com.au> wrote:
Why would it possibly matter if it's more of a 'jail' than 'virtualisation' ? Isn't the outcome the important thing ? In regards OpenVZ there is an ISO installer called Proxmox which helps you administer the whole system and gives you a pretty decent web interface for management. We use it extensively for voice applications. http://www.proxmox.com/products/proxmox-ve Brent
On Fri, Jan 28, 2011 at 9:52 PM, Grygoriy Dobrovolskyy <megahohol@gmail.com> wrote:
Hello list, le me introduce myself first, I am Grigoriy Dobrovolskyy currently working as voip administrator and call centeres integrator. I worked a lot with asterisk, i think Fs is a great software but not easy to learn. I have googled my question and did not found a clear answer. With what technology i can virtualise freeswitch without timer problems ? I know that i can use OpenVZ but it's more 'jail' then virtualisation. I heard that Amazon EC with High CPU instance works (confirm?) Can someone give me info of a succesfull installations with Conferences, Moh / mixing ? And a technology used ? Thank you. _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
-- -- Brent Paddon
Director | Over the Wire Pty Ltd brent.paddon@overthewire.com.au | www.overthewire.com.au Phone: 07 3847 9292 | Fax: 07 3847 9696 | Mobile: 0400 2400 54
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Many Xen kernels are compiled with a lower resolution kernel timer. Most applications will not notice this, but a VoIP application doing async RTP probably will. It can make audio quality poor, especially if something other than FreeSWITCH is trying to get CPU time while you are handling media. That is the main reason that I found. I have had OK results with Xen with the proper configuration. On Sat, Jan 29, 2011 at 11:57 AM, curriegrad2004 <curriegrad2004@gmail.com>wrote:
I noticed the wiki telling people not to use Xen, why is that?
On Sat, Jan 29, 2011 at 1:30 AM, dome@tel.co.th <dome@tel.co.th> wrote:
(from wiki http://wiki.freeswitch.org/wiki/Virtualization) if your FS running with high traffic please use /etc/vz/conf/ve-unlimited.conf-sample for default template
Dome C.
On Sat, Jan 29, 2011 at 7:23 AM, Seven Du <dujinfang@gmail.com> wrote:
We had used OpenVZ for a while, it was good given we never tested on load.
Another option besides OpenVZ is lxc , which is similar to OpenVZ. I runs some lxc VMs for other projects but never tried with FS.
On Sat, Jan 29, 2011 at 6:03 AM, Brent Paddon <brent@overthewire.com.au> wrote:
Why would it possibly matter if it's more of a 'jail' than 'virtualisation' ? Isn't the outcome the important thing ? In regards OpenVZ there is an ISO installer called Proxmox which helps you administer the whole system and gives you a pretty decent web interface for management. We use it extensively for voice applications. http://www.proxmox.com/products/proxmox-ve Brent
On Fri, Jan 28, 2011 at 9:52 PM, Grygoriy Dobrovolskyy < megahohol@gmail.com> wrote:
Hello list, le me introduce myself first, I am Grigoriy Dobrovolskyy currently working as voip administrator and call centeres integrator.
I
worked a lot with asterisk, i think Fs is a great software but not easy to learn. I have googled my question and did not found a clear answer. With what technology i can virtualise freeswitch without timer problems ? I know that i can use OpenVZ but it's more 'jail' then virtualisation. I heard that Amazon EC with High CPU instance works (confirm?) Can someone give me info of a succesfull installations with Conferences, Moh / mixing ? And a technology used ? Thank you. _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE: http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
-- -- Brent Paddon
Director | Over the Wire Pty Ltd brent.paddon@overthewire.com.au | www.overthewire.com.au Phone: 07 3847 9292 | Fax: 07 3847 9696 | Mobile: 0400 2400 54
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-- About: http://about.me/dujinfang Blog: http://www.dujinfang.com Proj: http://www.freeswitch.org.cn
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Thanks for that explanation, Chris. I didn't realize that Xen kernels are compiled with lower timer resolution values. Well, that being said, I'll probably attempt to run FreeSwitch (just for kicks, not in a production envrionment!) under Hyper-V and see what happens. On Sat, Jan 29, 2011 at 12:06 PM, Chris Burns <chris@cloudtel.com> wrote:
Many Xen kernels are compiled with a lower resolution kernel timer. Most applications will not notice this, but a VoIP application doing async RTP probably will. It can make audio quality poor, especially if something other than FreeSWITCH is trying to get CPU time while you are handling media. That is the main reason that I found. I have had OK results with Xen with the proper configuration.
On Sat, Jan 29, 2011 at 11:57 AM, curriegrad2004 <curriegrad2004@gmail.com> wrote:
I noticed the wiki telling people not to use Xen, why is that?
On Sat, Jan 29, 2011 at 1:30 AM, dome@tel.co.th <dome@tel.co.th> wrote:
(from wiki http://wiki.freeswitch.org/wiki/Virtualization) if your FS running with high traffic please use /etc/vz/conf/ve-unlimited.conf-sample for default template
Dome C.
On Sat, Jan 29, 2011 at 7:23 AM, Seven Du <dujinfang@gmail.com> wrote:
We had used OpenVZ for a while, it was good given we never tested on load.
Another option besides OpenVZ is lxc , which is similar to OpenVZ. I runs some lxc VMs for other projects but never tried with FS.
On Sat, Jan 29, 2011 at 6:03 AM, Brent Paddon <brent@overthewire.com.au> wrote:
Why would it possibly matter if it's more of a 'jail' than 'virtualisation' ? Isn't the outcome the important thing ? In regards OpenVZ there is an ISO installer called Proxmox which helps you administer the whole system and gives you a pretty decent web interface for management. We use it extensively for voice applications. http://www.proxmox.com/products/proxmox-ve Brent
On Fri, Jan 28, 2011 at 9:52 PM, Grygoriy Dobrovolskyy <megahohol@gmail.com> wrote:
Hello list, le me introduce myself first, I am Grigoriy Dobrovolskyy currently working as voip administrator and call centeres integrator. I worked a lot with asterisk, i think Fs is a great software but not easy to learn. I have googled my question and did not found a clear answer. With what technology i can virtualise freeswitch without timer problems ? I know that i can use OpenVZ but it's more 'jail' then virtualisation. I heard that Amazon EC with High CPU instance works (confirm?) Can someone give me info of a succesfull installations with Conferences, Moh / mixing ? And a technology used ? Thank you. _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
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-- -- Brent Paddon
Director | Over the Wire Pty Ltd brent.paddon@overthewire.com.au | www.overthewire.com.au Phone: 07 3847 9292 | Fax: 07 3847 9696 | Mobile: 0400 2400 54
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Hi, since I'm running a Debian Squeeze domU in a Citrix Xen dom0 with kernel 2.6.32-4-amd64 and having serious latency issues and audio hick-ups in longer calls, I've to look closer at timing issues. I didn't see any error messages or warnings, but maybe I don't have the right debug options set. # cat /sys/devices/system/clocksource/clocksource0/available_clocksource xen # cat /sys/devices/system/clocksource/clocksource0/current_clocksource xen The box is running chrony to provide accurate date&time. Below you'll find the output of timer_test, but I need some help interpreting this. In comparison to a bare metal box, the last column shows more "jitter" in the virtual box, but how bad are my values? According to a little program I found here: http://www.advenage.com/topics/linux-timer-interrupt-frequency.php : kernel timer interrupt frequency is approx. 4016 Hz or higher But how do I check the kernel timer resolution? All of this leaves me with the following questions: 1) Can I tweak the system to get better results? 2) Would it be better when using CentOS? Would I still have this problem, or would it be completely gone? 3) Is my latency problem (up to 30seconds of latency(!!!)) timer related, or do I have an other serious problem? There aren't any networking issues! Gigabit connections, private interconnect to the upstream provider and no packet loss at all. freeswitch@internal> timer_test Avg: 19.947ms Total Time: 999.762ms 2011-03-08 21:45:42.287865 [CONSOLE] mod_commands.c:461 Timer Test: samplecount after init: 1 freeswitch@internal> 2011-03-08 21:45:42.293298 [CONSOLE] mod_commands.c:466 Timer Test: samplecount after first step: 2 2011-03-08 21:45:42.312859 [CONSOLE] mod_commands.c:475 Timer Test: 1 sleep 20 19520 2011-03-08 21:45:42.333572 [CONSOLE] mod_commands.c:475 Timer Test: 2 sleep 20 20644 2011-03-08 21:45:42.353187 [CONSOLE] mod_commands.c:475 Timer Test: 3 sleep 20 19573 2011-03-08 21:45:42.373144 [CONSOLE] mod_commands.c:475 Timer Test: 4 sleep 20 19994 2011-03-08 21:45:42.393090 [CONSOLE] mod_commands.c:475 Timer Test: 5 sleep 20 19900 2011-03-08 21:45:42.412943 [CONSOLE] mod_commands.c:475 Timer Test: 6 sleep 20 19782 2011-03-08 21:45:42.432720 [CONSOLE] mod_commands.c:475 Timer Test: 7 sleep 20 19731 2011-03-08 21:45:42.452532 [CONSOLE] mod_commands.c:475 Timer Test: 8 sleep 20 19835 2011-03-08 21:45:42.473430 [CONSOLE] mod_commands.c:475 Timer Test: 9 sleep 20 20857 2011-03-08 21:45:42.493169 [CONSOLE] mod_commands.c:475 Timer Test: 10 sleep 20 19706 2011-03-08 21:45:42.512776 [CONSOLE] mod_commands.c:475 Timer Test: 11 sleep 20 19563 2011-03-08 21:45:42.533521 [CONSOLE] mod_commands.c:475 Timer Test: 12 sleep 20 20700 2011-03-08 21:45:42.553103 [CONSOLE] mod_commands.c:475 Timer Test: 13 sleep 20 19531 2011-03-08 21:45:42.572708 [CONSOLE] mod_commands.c:475 Timer Test: 14 sleep 20 19536 2011-03-08 21:45:42.593020 [CONSOLE] mod_commands.c:475 Timer Test: 15 sleep 20 20352 2011-03-08 21:45:42.612628 [CONSOLE] mod_commands.c:475 Timer Test: 16 sleep 20 19525 2011-03-08 21:45:42.633322 [CONSOLE] mod_commands.c:475 Timer Test: 17 sleep 20 20686 2011-03-08 21:45:42.652949 [CONSOLE] mod_commands.c:475 Timer Test: 18 sleep 20 19701 2011-03-08 21:45:42.672995 [CONSOLE] mod_commands.c:475 Timer Test: 19 sleep 20 19891 2011-03-08 21:45:42.693032 [CONSOLE] mod_commands.c:475 Timer Test: 20 sleep 20 19990 2011-03-08 21:45:42.713020 [CONSOLE] mod_commands.c:475 Timer Test: 21 sleep 20 19870 2011-03-08 21:45:42.732986 [CONSOLE] mod_commands.c:475 Timer Test: 22 sleep 20 19896 2011-03-08 21:45:42.752899 [CONSOLE] mod_commands.c:475 Timer Test: 23 sleep 20 19839 2011-03-08 21:45:42.772596 [CONSOLE] mod_commands.c:475 Timer Test: 24 sleep 20 19631 2011-03-08 21:45:42.793190 [CONSOLE] mod_commands.c:475 Timer Test: 25 sleep 20 20596 2011-03-08 21:45:42.812808 [CONSOLE] mod_commands.c:475 Timer Test: 26 sleep 20 19542 2011-03-08 21:45:42.833619 [CONSOLE] mod_commands.c:475 Timer Test: 27 sleep 20 20719 2011-03-08 21:45:42.853174 [CONSOLE] mod_commands.c:475 Timer Test: 28 sleep 20 19651 2011-03-08 21:45:42.872883 [CONSOLE] mod_commands.c:475 Timer Test: 29 sleep 20 19567 2011-03-08 21:45:42.893592 [CONSOLE] mod_commands.c:475 Timer Test: 30 sleep 20 20591 2011-03-08 21:45:42.913173 [CONSOLE] mod_commands.c:475 Timer Test: 31 sleep 20 19613 2011-03-08 21:45:42.932796 [CONSOLE] mod_commands.c:475 Timer Test: 32 sleep 20 19547 2011-03-08 21:45:42.953478 [CONSOLE] mod_commands.c:475 Timer Test: 33 sleep 20 20651 2011-03-08 21:45:42.973076 [CONSOLE] mod_commands.c:475 Timer Test: 34 sleep 20 19537 2011-03-08 21:45:42.992682 [CONSOLE] mod_commands.c:475 Timer Test: 35 sleep 20 19558 2011-03-08 21:45:43.013388 [CONSOLE] mod_commands.c:475 Timer Test: 36 sleep 20 20648 2011-03-08 21:45:43.033012 [CONSOLE] mod_commands.c:475 Timer Test: 37 sleep 20 19558 2011-03-08 21:45:43.052626 [CONSOLE] mod_commands.c:475 Timer Test: 38 sleep 20 19545 2011-03-08 21:45:43.073304 [CONSOLE] mod_commands.c:475 Timer Test: 39 sleep 20 20579 2011-03-08 21:45:43.092915 [CONSOLE] mod_commands.c:475 Timer Test: 40 sleep 20 19631 2011-03-08 21:45:43.112525 [CONSOLE] mod_commands.c:475 Timer Test: 41 sleep 20 19515 2011-03-08 21:45:43.133227 [CONSOLE] mod_commands.c:475 Timer Test: 42 sleep 20 20660 2011-03-08 21:45:43.152862 [CONSOLE] mod_commands.c:475 Timer Test: 43 sleep 20 19646 2011-03-08 21:45:43.173575 [CONSOLE] mod_commands.c:475 Timer Test: 44 sleep 20 20647 2011-03-08 21:45:43.193157 [CONSOLE] mod_commands.c:475 Timer Test: 45 sleep 20 19537 2011-03-08 21:45:43.212762 [CONSOLE] mod_commands.c:475 Timer Test: 46 sleep 20 19535 2011-03-08 21:45:43.233524 [CONSOLE] mod_commands.c:475 Timer Test: 47 sleep 20 20669 2011-03-08 21:45:43.252520 [CONSOLE] mod_commands.c:475 Timer Test: 48 sleep 20 19003 2011-03-08 21:45:43.273352 [CONSOLE] mod_commands.c:475 Timer Test: 49 sleep 20 20722 2011-03-08 21:45:43.293062 [CONSOLE] mod_commands.c:475 Timer Test: 50 sleep 20 19676 freeswitch@internal> timer_test 20 3 Avg: 19.792ms Total Time: 59.610ms 2011-03-08 21:48:34.467320 [CONSOLE] mod_commands.c:461 Timer Test: samplecount after init: 1 freeswitch@internal> 2011-03-08 21:48:34.473424 [CONSOLE] mod_commands.c:466 Timer Test: samplecount after first step: 2 2011-03-08 21:48:34.493299 [CONSOLE] mod_commands.c:475 Timer Test: 1 sleep 20 19738 2011-03-08 21:48:34.513203 [CONSOLE] mod_commands.c:475 Timer Test: 2 sleep 20 19833 2011-03-08 21:48:34.533075 [CONSOLE] mod_commands.c:475 Timer Test: 3 sleep 20 19805 On 29 Jan 2011, at 21:06, Chris Burns wrote:
Many Xen kernels are compiled with a lower resolution kernel timer. Most applications will not notice this, but a VoIP application doing async RTP probably will. It can make audio quality poor, especially if something other than FreeSWITCH is trying to get CPU time while you are handling media. That is the main reason that I found. I have had OK results with Xen with the proper configuration.
I've heard about proxmox, and even tested it a while ago. It's a good solution. The problem of Openvz is the maintenance mess. In clear you always need to keep updated kernels, possible have compatibility issues and other stuff when maintaining your virtual infrastructure up to date / migrating servers back and forth. With a complete hypervisor this problems do not exist. 2011/1/28 Brent Paddon <brent@overthewire.com.au>
Why would it possibly matter if it's more of a 'jail' than 'virtualisation' ? Isn't the outcome the important thing ?
In regards OpenVZ there is an ISO installer called Proxmox which helps you administer the whole system and gives you a pretty decent web interface for management. We use it extensively for voice applications.
http://www.proxmox.com/products/proxmox-ve
Brent
On Fri, Jan 28, 2011 at 9:52 PM, Grygoriy Dobrovolskyy < megahohol@gmail.com> wrote:
Hello list, le me introduce myself first, I am Grigoriy Dobrovolskyy currently working as voip administrator and call centeres integrator. I worked a lot with asterisk, i think Fs is a great software but not easy to learn.
I have googled my question and did not found a clear answer.
With what technology i can virtualise freeswitch without timer problems ?
I know that i can use OpenVZ but it's more 'jail' then virtualisation. I heard that Amazon EC with High CPU instance works (confirm?)
Can someone give me info of a succesfull installations with Conferences, Moh / mixing ? And a technology used ?
Thank you.
_______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
-- -- Brent Paddon
Director | Over the Wire Pty Ltd brent.paddon@overthewire.com.au | www.overthewire.com.au Phone: 07 3847 9292 | Fax: 07 3847 9696 | Mobile: 0400 2400 54
_______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
Another interesting point i have asked in near topic in opensips mailing list about timer and Saúl Ibarra Corretgé told me this: About Asterisk, the timing issues were resolved long ago and works very well with DAHDI if HPET is enabled. Latest releases support other timing sources: TimerFD and pthreads based timing. AppKonference did the timing and on its own, but it also brought another advantage: the possibility of not to use Zaptel/DAHDI (MeetMe uses DAHDI mixing engine, so it's limited to 8KHz...). So this virtualization timer problem is not so complicated to resolve if others done it ? 2011/1/29 Grygoriy Dobrovolskyy <megahohol@gmail.com>
I've heard about proxmox, and even tested it a while ago. It's a good solution. The problem of Openvz is the maintenance mess. In clear you always need to keep updated kernels, possible have compatibility issues and other stuff when maintaining your virtual infrastructure up to date / migrating servers back and forth. With a complete hypervisor this problems do not exist.
2011/1/28 Brent Paddon <brent@overthewire.com.au>
Why would it possibly matter if it's more of a 'jail' than 'virtualisation'
? Isn't the outcome the important thing ?
In regards OpenVZ there is an ISO installer called Proxmox which helps you administer the whole system and gives you a pretty decent web interface for management. We use it extensively for voice applications.
http://www.proxmox.com/products/proxmox-ve
Brent
On Fri, Jan 28, 2011 at 9:52 PM, Grygoriy Dobrovolskyy < megahohol@gmail.com> wrote:
Hello list, le me introduce myself first, I am Grigoriy Dobrovolskyy currently working as voip administrator and call centeres integrator. I worked a lot with asterisk, i think Fs is a great software but not easy to learn.
I have googled my question and did not found a clear answer.
With what technology i can virtualise freeswitch without timer problems ?
I know that i can use OpenVZ but it's more 'jail' then virtualisation. I heard that Amazon EC with High CPU instance works (confirm?)
Can someone give me info of a succesfull installations with Conferences, Moh / mixing ? And a technology used ?
Thank you.
_______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
-- -- Brent Paddon
Director | Over the Wire Pty Ltd brent.paddon@overthewire.com.au | www.overthewire.com.au Phone: 07 3847 9292 | Fax: 07 3847 9696 | Mobile: 0400 2400 54
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Some people claim they have solved it, but it's still all dependant on the hw config, the VM config etc. There is not one generic solution that fixes timer problems in virtualized environments. And there is no "fix" available that makes timing in a VM as accurate as real hw systems. I would say that FS timing works at least as good (or probably better) than Asterisk. But in virtualized systems the timing might be bad enough to produce bad audio. I would never use a virtual host for production, but I know there are people who use it that way, and are happy with the results. The basic tricks I know of in ESXi is to only give the virtual host one CPU (SMP systems makes the clock less accurate in this case), and to make sure that this core is not shared with other hosts. /Peter ________________________________________ Från: freeswitch-users-bounces@lists.freeswitch.org [freeswitch-users-bounces@lists.freeswitch.org] för Grygoriy Dobrovolskyy [megahohol@gmail.com] Skickat: den 29 januari 2011 01:39 Till: FreeSWITCH Users Help Ämne: Re: [Freeswitch-users] Virtualisation and freeswitch Another interesting point i have asked in near topic in opensips mailing list about timer and Saúl Ibarra Corretgé told me this: About Asterisk, the timing issues were resolved long ago and works very well with DAHDI if HPET is enabled. Latest releases support other timing sources: TimerFD and pthreads based timing. AppKonference did the timing and on its own, but it also brought another advantage: the possibility of not to use Zaptel/DAHDI (MeetMe uses DAHDI mixing engine, so it's limited to 8KHz...). So this virtualization timer problem is not so complicated to resolve if others done it ? 2011/1/29 Grygoriy Dobrovolskyy <megahohol@gmail.com<mailto:megahohol@gmail.com>> I've heard about proxmox, and even tested it a while ago. It's a good solution. The problem of Openvz is the maintenance mess. In clear you always need to keep updated kernels, possible have compatibility issues and other stuff when maintaining your virtual infrastructure up to date / migrating servers back and forth. With a complete hypervisor this problems do not exist. 2011/1/28 Brent Paddon <brent@overthewire.com.au<mailto:brent@overthewire.com.au>> Why would it possibly matter if it's more of a 'jail' than 'virtualisation' ? Isn't the outcome the important thing ? In regards OpenVZ there is an ISO installer called Proxmox which helps you administer the whole system and gives you a pretty decent web interface for management. We use it extensively for voice applications. http://www.proxmox.com/products/proxmox-ve Brent On Fri, Jan 28, 2011 at 9:52 PM, Grygoriy Dobrovolskyy <megahohol@gmail.com<mailto:megahohol@gmail.com>> wrote: Hello list, le me introduce myself first, I am Grigoriy Dobrovolskyy currently working as voip administrator and call centeres integrator. I worked a lot with asterisk, i think Fs is a great software but not easy to learn. I have googled my question and did not found a clear answer. With what technology i can virtualise freeswitch without timer problems ? I know that i can use OpenVZ but it's more 'jail' then virtualisation. I heard that Amazon EC with High CPU instance works (confirm?) Can someone give me info of a succesfull installations with Conferences, Moh / mixing ? And a technology used ? Thank you. _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org<mailto:FreeSWITCH-users@lists.freeswitch.org> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org -- -- Brent Paddon Director | Over the Wire Pty Ltd brent.paddon@overthewire.com.au<mailto:brent.paddon@overthewire.com.au> | www.overthewire.com.au<http://www.overthewire.com.au> Phone: 07 3847 9292 | Fax: 07 3847 9696 | Mobile: 0400 2400 54 _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org<mailto:FreeSWITCH-users@lists.freeswitch.org> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org !DSPAM:4d448f0d32766176048984!
participants (13)
-
Anthony Minessale
-
Avi Marcus
-
Brent Paddon
-
Chris Burns
-
Chris Chen
-
curriegrad2004
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David Ponzone
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dome＠tel.co.th
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Frank Carmickle
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Grygoriy Dobrovolskyy
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Johannes Jakob
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Peter Olsson
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Seven Du