Honest: if you are not very, very, very into knowledge about kernels, how kernels keep timing, xen, FreeSWITCH, etc (but very into knowledge) *don't* put a production system in the cloud. Ask some consultant to do it for you (if you want to be in the cloud), or rent a real hardware server from some good server provider. -giovanni On 7/5/11, Avi Marcus <avi@avimarcus.net> wrote:
I keep hearing that amazon has unpredictable timing - I've been using Linode - xen - without any issues for FS for low volume. I tested 200 MOH channels on the lowest plan with only a few dropped packets. If you're running that volume, you can afford more than $20/month for their cheapest box with up to 39 other people on the same machine.
Linode says their CPU is the most under-utilized resource. The clock tests in FS have always been good, but you can experiment with the 1000hz centos or new tickless + timerfd or something. But I've had very good experience with Linode for my virtualization. (just don't go California datacenter, HE has been having trouble...)
-Avi Marcus
On Tue, Jul 5, 2011 at 3:23 PM, Steven Ayre <steveayre@gmail.com> wrote:
I haven't personally, but I have seen some people on the list using EC2 for FS. AFAIK it will work, essentially, for some value of work.
However, when running a realtime server such as FS on a virtual machine you have to bear in mind that the guest OS has little control of timing. The host can take away processing time unpredictibly for other tasks, especially if the server is quite loaded. That means that keeping a constant timer running can be tricky for FS to do, which is why you saw many people have had clock and audio quality problems. Jitter buffers will cover it up, but can only do so much.
How well it performs is probably best determined by setting it up yourself and doing some testing.
-Steve
On 5 July 2011 12:00, Sanjay Arora <sanjay.k.arora@gmail.com> wrote:
Hello all
I am looking to find out from users about voip on cloud, especially FS on Amazon EC2. Google gave very few results. There were very few positive posts/articles, among them Eric Wickstrom's post on this list around 2009 but many seemed to be having clock/echo related problems.
I would like to ask if any of you are successfully using Amazon as a voip hosting provider & what are the issues involved/stumbling blocks.
I am looking to install a sme multi-tenant production system and will be selling voip minutes to a small focus target segment. I am mostly a marketing man & a small-time hobby sys-admin, so I'd also like to know how difficult it is.
On a side note, I would like to solicit your opinion of Sipwise free & pro edition especially with respect to deployment on Amazon cloud.
With best regards & thanks. Sanjay.
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