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<div class=Section1>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Anthony,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Just so you didn’t get me wrong (feels like I got stuck in the
middle here...). I Just wanted to point out that I do have the same “problem”
as Wasim. I’m well aware I’m running this on old hardware, I just use it for
lab purposes, so it really doesn’t matter. I don’t have any audio problems,
since I just use it for 1-2 silutaneous calls. But I do get the warning when I
start up FS, the same on both CentOS 5.4 and 5.5 (didn’t try 5.3 on this box, I
started with 5.4 and upgraded yesterday), so I just wanted to try helping out
if anyone needed a 5.5 box to try on.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I’m running “production” (only for internal use, but still)
servers on both CentOS 5.3 and Windows 2003, which work perfectly fine (no
timer gap warnings) – but they have good hardware though :)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Regards,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Peter<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Från:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
freeswitch-users-bounces@lists.freeswitch.org
[mailto:freeswitch-users-bounces@lists.freeswitch.org] <b>För </b>Anthony
Minessale<br>
<b>Skickat:</b> den 18 maj 2010 17:35<br>
<b>Till:</b> freeswitch-users@lists.freeswitch.org<br>
<b>Ämne:</b> Re: [Freeswitch-users] centos 5.4 timer issue 1000hz, choppy voice
at times<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal>Please heed as this is our official policy.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<p class=MsoNormal>There is not an issue with CentOS 5.3. <o:p></o:p></p>
<div>
<p class=MsoNormal>In fact CentOS 5.3 is the preferred platform (not 5.4 or 5.5
until we do proper testing and QA).<o:p></o:p></p>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>What you are describing is the result of poor hardware,
(most likely the motherboard)<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>FreeSWITCH is Free, your box is not, use the money you save
not buying FreeSWITCH to buy a decent box. Even a $500 box can work
perfectly fine. Its not my intent to cater to inferior hardware when
my goal is to push telephony into the future not get caught up in legacy drama
with older boxes. <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>If you have altered the kernel to run at something besides
1000hz, change it back to the default of 1000hz. If you get the error
instantly it means the kernel is actually configured at the wrong freq.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>If the test runs for a long time and concludes it, it most
likely means the box is not good enough to run FS.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>If you are not careful you may have installed the xen build
of the kernel (check with uname -a)<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>This can also cause timing issues.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>If you see that timing gap warning (especially on centos if
you have it set to 1000hz) it means the motherboard cannot give the OS a good
enough timing source to provide 1ms resolution which is mandatory and not very
demanding.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>I have been on dozens of perfectly happy boxes running
CentOS 5.3 and I have been on a small handful of boxes that do what you
describe and have seen that, once they are where they belong, (in the trash)
the new inexpensive replacement does just fine.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal>On Tue, May 18, 2010 at 2:58 AM, Peter Olsson <<a
href="mailto:peter.olsson@visionutveckling.se">peter.olsson@visionutveckling.se</a>>
wrote:<o:p></o:p></p>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:10.0pt;color:#1F497D'>I also have this behaviour
(timer gap around 2000). Upgraded yesterday to CentOS 5.5 (from 5.4), but the
issue still remains. The system is just used for lab purposes, so I could
easily fix SSH access if someone wanted to have a closer look.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:10.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:10.0pt;color:#1F497D'>I should also add – this is a
3-4 year old machine (workstation), but it seems this problem is related to
newer CentOS-kernels, so I guess it shouldn’t be the issue here.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:10.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:10.0pt;color:#1F497D'>/Peter</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:10.0pt;color:#1F497D'> </span><o:p></o:p></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:10.0pt'>Från:</span></b><span style='font-size:10.0pt'> <a
href="mailto:freeswitch-users-bounces@lists.freeswitch.org" target="_blank">freeswitch-users-bounces@lists.freeswitch.org</a>
[mailto:<a href="mailto:freeswitch-users-bounces@lists.freeswitch.org"
target="_blank">freeswitch-users-bounces@lists.freeswitch.org</a>] <b>För </b>Wasim
Baig<br>
<b>Skickat:</b> den 18 maj 2010 06:20<br>
<b>Till:</b> FreeSWITCH Users<br>
<b>Ämne:</b> [Freeswitch-users] centos 5.4 timer issue 1000hz, choppy voice at
times</span><o:p></o:p></p>
</div>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I
know its been discussed previously on list, but has there been any progress to
the timer issue on centos 5.4 32 bit<o:p></o:p></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
</div>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Linux
pum2 2.6.18-164.el5 #1 SMP Thu Sep 3 03:33:56 EDT 2009 i686 i686 i386 GNU/Linux<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
</div>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>[root@pum2
~]# grep 1000 /boot/config-2.6.18-164.el5<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>CONFIG_HZ_1000=y<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>CONFIG_HZ=1000<o:p></o:p></p>
</div>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>i
used a basic timer testing utility to confirm what we're actually getting<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>[root@pum2
~]# ./timerchk <o:p></o:p></p>
</div>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>kernel
timer interrupt frequency is approx. 1002 Hz<o:p></o:p></p>
</div>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>however,
fs complains ...<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
</div>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>2010-05-18
06:17:24.711360 [CONSOLE] switch_time.c:1032 Calibrating timer, please wait...<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>2010-05-18
06:17:24.861063 [CONSOLE] switch_time.c:223 Test: 1000 Average: 2992 Step: 50<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>2010-05-18
06:17:24.861097 [WARNING] switch_time.c:227 Abnormally large timer gap 1992
detected!<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Do
you have your kernel timer frequency set to lower than 1,000Hz? You may
experience audio problems.<o:p></o:p></p>
</div>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>any
recommendations, other than drop to 5.3? which is not doable as the box is a 5k
km away ...<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
</div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>--
<br>
wasim h. baig | principal consultant | convergence pk | +92 30 0850 8070 |
peace be upon you ...<o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
_______________________________________________<br>
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</div>
<p class=MsoNormal><br>
<br clear=all>
<br>
-- <br>
Anthony Minessale II<br>
<br>
FreeSWITCH <a href="http://www.freeswitch.org/">http://www.freeswitch.org/</a><br>
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<br>
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pstn:+19193869900<o:p></o:p></p>
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<p class=MsoNormal>!DSPAM:4bf2b5fb32931992811684! <o:p></o:p></p>
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