<div dir="ltr">Hi Colin, <div><br></div><div>Did you get any more info on FS on AWS? I'm interested on this also.</div><div><br></div><div>Thanks, </div><div>Joel.</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Feb 13, 2017 at 6:43 AM, Colin Morelli <span dir="ltr"><<a href="mailto:colin.morelli@gmail.com" target="_blank">colin.morelli@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hey list,<div><br></div><div>I'll start by saying I have read the warnings and recommendations to <i>not</i> 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.</div><div><br></div><div>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 <i>feels and sounds</i> 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.</div><div><br></div><div>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?</div><div><br></div><div>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.</div><div><br></div><div>Best,</div><div>Colin</div></div>
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