<div dir="ltr"><div><span style="color:rgb(0,0,0);font-size:12.8px">Sorry, sent accidentally.</span></div><div><span style="color:rgb(0,0,0);font-size:12.8px"><br></span></div><div><span style="color:rgb(0,0,0);font-size:12.8px">I don't see why c4 should not work as well but if you are transcoding, OPUS takes 2-3 times the CPU of other codecs. Here is a test I did and sent to this list a while back in case it helps.</span><div class="gmail-yj6qo gmail-ajU" style="color:rgb(0,0,0);font-size:12.8px"></div></div><span style="color:rgb(0,0,0);font-size:12.8px"><div><span style="color:rgb(0,0,0);font-size:12.8px"><br></span></div></span><span style="color:rgb(0,0,0);font-size:12.8px">AWS M3.2xl instance with 8 CPUs for a 10 person conference with all clients connecting from Chrome via WebRTC. </span><div style="color:rgb(0,0,0);font-size:12.8px">FS CPU usage was jumping more or less within these ranges throughout the conference:</div><div style="color:rgb(0,0,0);font-size:12.8px"><br></div><div style="color:rgb(0,0,0);font-size:12.8px"><div>PCMU: 4.3% - 5.0%</div><div>722: 7.6% - 8.3%</div><div><span class="gmail-il">OPUS</span>: 25% - 50%</div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Feb 16, 2017 at 4:43 PM, Oleg Stolyar <span dir="ltr"><<a href="mailto:olegstolyar@gmail.com" target="_blank">olegstolyar@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">I don't see why c4 should not work as well but if you are transcoding, OPUS takes 2-3 times the CPU of <div><br></div></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Feb 16, 2017 at 3:01 PM, 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">Thanks for the info, Oleg.<div><br></div><div>Do you know what AMI you're running? Kernel version? Etc. We opted for the c4s out of an assumption that our configuration would lend itself to being more CPU hungry than memory hungry (we're using opus)</div><span class="m_8516837571081027899HOEnZb"><font color="#888888"><div><br></div><div>Colin</div></font></span></div><div class="m_8516837571081027899HOEnZb"><div class="m_8516837571081027899h5"><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Feb 16, 2017 at 5:52 PM, Oleg Stolyar <span dir="ltr"><<a href="mailto:olegstolyar@gmail.com" target="_blank">olegstolyar@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">I have been running FS on <span style="color:rgb(51,51,51);font-family:"source sans pro",sans-serif;font-size:14px">m3.2xlarge instances for a long time without issues. </span><div><span style="color:rgb(51,51,51);font-family:"source sans pro",sans-serif;font-size:14px"><br></span></div><div><span style="color:rgb(51,51,51);font-family:"source sans pro",sans-serif;font-size:14px">With a mix of G.722 and G.711 it handles up to 250-300 concurrent calls/conferences with transcoding although we try to not let it go above 200.</span></div></div><div class="m_8516837571081027899m_1895858323231352968HOEnZb"><div class="m_8516837571081027899m_1895858323231352968h5"><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Feb 16, 2017 at 2:12 PM, 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">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" target="_blank">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="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg">Hi Colin, <div class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"><br class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"></div><div class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg">Did you get any more info on FS on AWS? I'm interested on this also.</div><div class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"><br class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"></div><div class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg">Thanks, </div></div><div dir="ltr" class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"><div class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg">Joel.</div></div><div class="gmail_extra m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"><div class="gmail_quote m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg">On Mon, Feb 13, 2017 at 6:43 AM, Colin Morelli <span dir="ltr" class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"><<a href="mailto:colin.morelli@gmail.com" class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg" target="_blank">colin.morelli@gmail.com</a>></span> wrote:<br class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"></div></div><div class="gmail_extra m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"><div class="gmail_quote m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"><blockquote class="gmail_quote m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr" class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg">Hey list,<div class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"><br class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"></div><div class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg">I'll start by saying I have read the warnings and recommendations to <i class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_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="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"><br class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"></div><div class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_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="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_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="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"><br class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"></div><div class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_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="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"><br class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"></div><div class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_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="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"><br class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg"></div><div class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg">Best,</div><div class="m_8516837571081027899m_1895858323231352968m_-1215983196426351085m_-78662355845082690gmail_msg">Colin</div></div>
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Official FreeSWITCH Sites<br>
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