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<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Calibri","sans-serif";
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.<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>&nbsp;</o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I should also add &#8211; 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&#8217;t be the issue here.<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>&nbsp;</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 lang=EN-US style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

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<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>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<o:p></o:p></span></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal>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>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal>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>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal>[root@pum2 ~]# grep 1000 /boot/config-2.6.18-164.el5<o:p></o:p></p>

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<p class=MsoNormal>CONFIG_HZ_1000=y<o:p></o:p></p>

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<p class=MsoNormal>CONFIG_HZ=1000<o:p></o:p></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal>i used a basic timer testing utility to confirm what we're
actually getting<o:p></o:p></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal>[root@pum2 ~]# ./timerchk&nbsp;<o:p></o:p></p>

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<p class=MsoNormal>kernel timer interrupt frequency is approx. 1002 Hz<o:p></o:p></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal>however, fs complains ...<o:p></o:p></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal>2010-05-18 06:17:24.711360 [CONSOLE] switch_time.c:1032
Calibrating timer, please wait...<o:p></o:p></p>

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<p class=MsoNormal>2010-05-18 06:17:24.861063 [CONSOLE] switch_time.c:223 Test:
1000 Average: 2992 Step: 50<o:p></o:p></p>

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<p class=MsoNormal>2010-05-18 06:17:24.861097 [WARNING] switch_time.c:227
Abnormally large timer gap 1992 detected!<o:p></o:p></p>

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<p class=MsoNormal>Do you have your kernel timer frequency set to lower than
1,000Hz? You may experience audio problems.<o:p></o:p></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal>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>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal>-- <br>
wasim h. baig | principal consultant | convergence pk | +92 30 0850 8070 |
peace be upon you ...<o:p></o:p></p>

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<p class=MsoNormal>!DSPAM:4bf2176432938985444358! <o:p></o:p></p>

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