[Freeswitch-users] AWS Instance Recommendations

[acheraime at gmail.com]

I'm about run a couple of tests on google cloud environment. I will post the results as soon as I'm done.

--
Adolphe 

Sent from my iPhone

> On Feb 16, 2017, at 5:12 PM, Colin Morelli <colin.morelli at gmail.com> wrote:
> 
> Stanislav,
> 
> Sorry about that - I hadn't seen your reply! Understood on your suggestions. I guess my ultimate question is - is virtualization still a huge problem aside from noisy neighbors? AWS of course allows you to get dedicated instances (albeit expensive), but you're still running in a VM. 
> 
> The complexity of including another data center in the infrastructure is a bit too much for this use case, but as mentioned - it'll definitely move this way over time.
> 
> Joel,
> 
> Nothing other than what's on this thread. However, I will say that I moved from Ubuntu to an Amazon Linux AMI, moved logging from direct to disk out to syslog (with async writes to disk), and increased the instance size to a c4.xlarge, and users are reporting considerable improvements.
> 
> Best,
> Colin
>> On Thu, Feb 16, 2017 at 5:01 PM Joel Serrano <joel at gogii.net> wrote:
>> Hi Colin, 
>> 
>> Did you get any more info on FS on AWS? I'm interested on this also.
>> 
>> Thanks, 
>> Joel.
>> On Mon, Feb 13, 2017 at 6:43 AM, Colin Morelli <colin.morelli at gmail.com> wrote:
>> Hey list,
>> 
>> I'll start by saying I have read the warnings and recommendations to not run FS on virtualized hardware. For right now, though, it's really the only option for me. I don't anticipate nor will I expect the behavior to be the same as what I would get on physical hosts, but would just like it to be as consistent (and good) as possible given the constraints.
>> 
>> My question is - does anyone have particular kernel and instance type recommendations for AWS? I'm getting relatively frequent jitter and what seem like timing-related issues on calls, even in simple device <-> device calls within FS (no external gateway involved). I'm currently running FS in a Debian 8 docker container (with no memory or CPU limits) on a c4.large Ubuntu 16.04 host (kernel 4.4.0-45, default 250hz timer). The particular behavior I'm seeing feels and sounds like a few frames of silence, followed up by the audio being sped up slightly for a second or two (almost like it's trying to catch up), happening occasionally throughout calls. Note that this is with one call, and ~5% CPU usage on the host. Thus I'm pointing a finger most likely at kernel timer resolution. Running time_test 100 on FS returns an average of 200, which seems pretty bad.
>> 
>> I've heard people have better success with the Amazon Linux AMIs for their packaged kernels. Is this true? Would recompiling the kernel with a 1000hz timer help a lot here?
>> 
>> If you're having success on AWS, would be great to know what AMI you're based off of, what kernel version (and timer), and instance size. Thanks in advance.
>> 
>> Best,
>> Colin
>> 
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