<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Superstition comment was in regards to tc malloc, not you.<div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Apr 18, 2017, at 7:35 AM, David Ponzone <<a href="mailto:david.ponzone@gmail.com" class="">david.ponzone@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Anthony,</div><div class=""><br class=""></div>Could you elaborate a little bit more on why I am being superstitious ?<div class="">Is timer_test command obsolete ?</div><div class="">Or is it a way to emphase the fact that you won’t support FS on VM, anyway ?</div><div class=""><br class=""></div><div class=""><br class=""><div class=""><br class="Apple-interchange-newline">
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<br class=""><div class=""><blockquote type="cite" class=""><div class="">Le 17 avr. 2017 à 23:27, Anthony Minessale <<a href="mailto:anthony.minessale@gmail.com" class="">anthony.minessale@gmail.com</a>> a écrit :</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">I believe we may be stumbling into superstition at this point.<div class=""><br class=""></div></div><div class="gmail_extra"><br class=""><div class="gmail_quote">On Fri, Apr 14, 2017 at 6:03 PM, David Ponzone <span dir="ltr" class=""><<a href="mailto:david.ponzone@gmail.com" target="_blank" class="">david.ponzone@gmail.com</a>></span> wrote:<br class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word" class="">Did you run the timer_test command ?<div class=""><br class=""><div class="">
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<br class=""><div class=""><blockquote type="cite" class=""><div class="">Le 14 avr. 2017 à 23:04, Bilal Dar <<a href="mailto:bilal@rgate-systems.com" target="_blank" class="">bilal@rgate-systems.com</a>> a écrit :</div><br class="m_7398230337600912797Apple-interchange-newline"><div class=""><div dir="ltr" class="">The issue triggered when I ran out of inodes on the server, even after freeing inodes things never went back to normal. I was running earlier m3.large and now moved to m3.2xlarge servers, CPU/memory utilization is negligible. <div class=""><div class=""><br class=""></div><div class=""><div class="">Model vCPU Mem (GiB) SSD Storage (GB) </div><div class="">m3.large 2 7.5 1 x 32 </div><div class="">m3.2xlarge 8 30 2 x 80 </div></div><div class=""><br class=""></div><div class=""><br class=""></div><div class="gmail_extra"><br class=""><div class="gmail_quote">On Fri, Apr 14, 2017 at 1:53 PM, Colin Morelli <span dir="ltr" class=""><<a href="mailto:colin.morelli@gmail.com" target="_blank" class="">colin.morelli@gmail.com</a>></span> wrote:<br class=""><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div dir="ltr" class="">Robert,<div class=""><br class=""></div><div class="">While I'd love to see VMs provide more stable ground for FS, it's simply not the best task for a VM. Virtual machines scale well specifically because you can overprovision them. It would not be nearly as cost-effective to run VMs if each instance had a guaranteed dedicated slice of hardware to operate on. While hypervisors are <i class="">very</i> good at task prioritization, they're not perfect. If the hypervisor can't schedule processor time when FS needs it because the CPU cores are momentarily taken on other tasks, there's not a whole lot FS can do. This is not an issue with just FS, but with all real-time applications. In most apps, even large clock skews and bad hypervisors schedulers can go completely unnoticed. If there's consistent 5-10ms every time you click to load a web page, you'd probably have no idea. If there's 5-10ms jitter every time you try to read 20ms of audio, you have <i class="">really bad</i> audio. Granted most skews are not that bad, but the effects are pronounced when you're dealing with data that's real-time in nature.</div><div class=""><br class=""></div><div class="">Bilal,</div><div class=""><br class=""></div><div class="">I have no idea what AMI you're running, but a very rough "ear test" has made me fairly confident that I can get better performance running AmazonLinux AMIs over Ubuntu (and probably many others). It wouldn't surprise me if AmazonLinux builds a custom kernel that has been tuned to run better on AWS hardware. I'd say it's at least worth a quick experiment.</div><div class=""><br class=""></div><div class="">Best,</div><div class="">Colin</div></div><div class="gmail_extra"><br class=""><div class="gmail_quote"><div class=""><div class="m_7398230337600912797gmail-h5">On Fri, Apr 14, 2017 at 4:34 PM, Mundkowsky, Robert <span dir="ltr" class=""><<a href="mailto:rmundkowsky@ets.org" target="_blank" class="">rmundkowsky@ets.org</a>></span> wrote:<br class=""></div></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div class=""><div class="m_7398230337600912797gmail-h5">
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<div class="m_7398230337600912797gmail-m_-470338840461164024m_-5335504817902696112WordSection1"><p class="MsoNormal"><a name="m_7398230337600912797_m_-470338840461164024_m_-5335504817902696112__MailEndCompose" class=""><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)" class="">Michael<u class=""></u><u class=""></u></span></a></p><p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)" class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal" style="text-indent:0.5in"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)" class="">Just curious, why so many problems with VMs?<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)" class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal" style="text-indent:0.5in"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)" class="">I would think most applications need real time clocks that provide consistent valid data?<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)" class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)" class="">Bilal,<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)" class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal" style="text-indent:0.5in"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)" class="">you might try a larger AWS instance to make sure your are getting 100% of the box; might help some.<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)" class=""><u class=""></u> <u class=""></u></span></p>
<div class=""><p class="MsoNormal"><span style="font-size:11pt;font-family:calibri,sans-serif;color:rgb(31,73,125)" class="">Robert
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<div style="border-style:solid none none;border-top-width:1pt;border-top-color:rgb(225,225,225);padding:3pt 0in 0in" class=""><p class="MsoNormal"><b class=""><span style="font-size:11pt;font-family:calibri,sans-serif" class="">From:</span></b><span style="font-size:11pt;font-family:calibri,sans-serif" class=""> <a href="mailto:freeswitch-users-bounces@lists.freeswitch.org" target="_blank" class="">freeswitch-users-bounces@lists<wbr class="">.freeswitch.org</a> [mailto:<a href="mailto:freeswitch-users-bounces@lists.freeswitch.org" target="_blank" class="">freeswitch-users-bounc<wbr class="">es@lists.freeswitch.org</a>]
<b class="">On Behalf Of </b>Michael Jerris<br class="">
<b class="">Sent:</b> Friday, April 14, 2017 4:25 PM<br class="">
<b class="">To:</b> FreeSWITCH Users Help <<a href="mailto:freeswitch-users@lists.freeswitch.org" target="_blank" class="">freeswitch-users@lists.freesw<wbr class="">itch.org</a>><br class="">
<b class="">Subject:</b> Re: [Freeswitch-users] Choppy audio when conferencing 4+ participants<u class=""></u><u class=""></u></span></p>
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</div><div class=""><div class="m_7398230337600912797gmail-m_-470338840461164024h5"><p class="MsoNormal"><u class=""></u> <u class=""></u></p><p class="MsoNormal">can you reproduce the same issue on real hardware? We’ve seen all kinds of weird timing issues that could account for this running on aws.<u class=""></u><u class=""></u></p>
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<div class=""><p class="MsoNormal">On Apr 14, 2017, at 4:16 PM, Bilal Dar <<a href="mailto:bilal@rgate-systems.com" target="_blank" class="">bilal@rgate-systems.com</a>> wrote:<u class=""></u><u class=""></u></p>
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<div class=""><p class="MsoNormal">Its an AWS <span style="font-size:10.5pt;font-family:arial,sans-serif;color:rgb(51,51,51)" class="">m3.2xlarge instance.</span><u class=""></u><u class=""></u></p>
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<div class=""><p class="MsoNormal">On Fri, Apr 14, 2017 at 9:57 AM, Michael Jerris <<a href="mailto:mike@jerris.com" target="_blank" class="">mike@jerris.com</a>> wrote:<u class=""></u><u class=""></u></p>
<blockquote style="border-style:none none none solid;border-left-width:1pt;border-left-color:rgb(204,204,204);padding:0in 0in 0in 6pt;margin-left:4.8pt;margin-right:0in" class=""><p class="MsoNormal" style="margin-bottom:12pt">Real hardware or VM?<br class="">
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> On Apr 14, 2017, at 12:48 PM, Bilal Dar <<a href="mailto:bilal@rgate-systems.com" target="_blank" class="">bilal@rgate-systems.com</a>> wrote:<br class="">
><br class="">
> I have been struggling with an issue for almost 2 weeks.<br class="">
><br class="">
> Our regular calls have no quality issue and looking RTCP statistics network conditions are perfect. We have normally on peak hr 60 calls and around 10 conferences.<br class="">
><br class="">
> We have noticed that when we have 2 conferences of 4 or 5 participants, audio starts breaking for the users who are on conference. Regular calls do not experience any quality degradation.<br class="">
><br class="">
> I upgraded the server to specs of 30Gig memory and 8 vCPU but still the issue exists. Common thing I have noticed even during off-peak hrs is that two 4+ participant call can cause the issue.<br class="">
><br class="">
> I have ruled out network & hardware. Last change I made was moved all users to G.711 from G.722. Now I am not sure what other steps I can take. Appreciate any suggestions.<u class=""></u><u class=""></u></p>
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