Stanislav,<br><br>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. <br><br>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.<br><br>Joel,<br><br>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.<br><br>Best,<br>Colin<br><div class="gmail_quote"><div dir="ltr">On Thu, Feb 16, 2017 at 5:01 PM Joel Serrano <<a href="mailto:joel@gogii.net">joel@gogii.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr" class="gmail_msg">Hi Colin, <div class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg">Did you get any more info on FS on AWS? I'm interested on this also.</div><div class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg">Thanks, </div></div><div dir="ltr" class="gmail_msg"><div class="gmail_msg">Joel.</div></div><div class="gmail_extra gmail_msg"><div class="gmail_quote gmail_msg">On Mon, Feb 13, 2017 at 6:43 AM, Colin Morelli <span dir="ltr" class="gmail_msg"><<a href="mailto:colin.morelli@gmail.com" class="gmail_msg" target="_blank">colin.morelli@gmail.com</a>></span> wrote:<br class="gmail_msg"></div></div><div class="gmail_extra gmail_msg"><div class="gmail_quote gmail_msg"><blockquote class="gmail_quote gmail_msg" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr" class="gmail_msg">Hey list,<div class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg">I'll start by saying I have read the warnings and recommendations to <i class="gmail_msg">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 class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg">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 class="gmail_msg">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 class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg">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 class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg">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 class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg">Best,</div><div class="gmail_msg">Colin</div></div>
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