[Freeswitch-users] Clock Skew

Yossi Neiman freeswitch at cartissolutions.com
Tue May 6 19:04:43 PDT 2008


Is your system by any chance an Athlon XP system?  Do you have 
spread-spectrum enabled in the bios?  These are problems I had 
historically with clock instability, might be worth a check.

-Yossi

Peder @ NetworkOblivion wrote:
> Yeah, ntpd.  So it sounds like ntpd is changing the clock by a little 
> bit and FS is noticing it as a big skew.  So I guess I need to disable ntpd.
>
> Anthony Minessale wrote:
>   
>> do you have something that sets your clock for you running? like a 
>> network sync.
>> It's possible monotonic is already disabled because its not supported so 
>> you are falling prey to the system clock changing.
>>
>> On Tue, May 6, 2008 at 12:56 PM, Peder @ NetworkOblivion 
>> <peder at networkoblivion.com <mailto:peder at networkoblivion.com>> wrote:
>>
>>     I added that line and it still occurs:
>>
>>     2008-05-06 11:13:13 [CRIT] switch_time.c:351 softtimer_runtime() Forward
>>     Clock Skew Detected!
>>     2008-05-06 12:06:00 [CRIT] switch_time.c:351 softtimer_runtime() Forward
>>     Clock Skew Detected!
>>
>>
>>     Here is my switch.conf.xml:
>>
>>     <configuration name="switch.conf" description="Core Configuration">
>>
>>       <cli-keybindings>
>>         <key name="1" value="help"/>
>>         <key name="2" value="status"/>
>>         <key name="3" value="show channels"/>
>>         <key name="4" value="show calls"/>
>>         <key name="5" value="sofia status"/>
>>         <key name="6" value="reloadxml"/>
>>         <key name="7" value="console loglevel 0"/>
>>         <key name="8" value="console loglevel 7"/>
>>         <key name="9" value="sofia status profile default"/>
>>         <key name="10" value="fsctl pause"/>
>>         <key name="11" value="fsctl resume"/>
>>         <key name="12" value="version"/>
>>       </cli-keybindings>
>>
>>       <settings>
>>         <!--Most channels to allow at once -->
>>         <param name="max-sessions" value="1000"/>
>>         <!--Most channels to create per second -->
>>         <param name="sessions-per-second" value="30"/>
>>         <!-- Default Global Log Level - value is one of
>>     debug,info,notice,warning,err,crit,alert -->
>>         <param name="loglevel" value="debug"/>
>>         <!--Try to catch any crashes that can be recoverable (in the
>>     context of a call)-->
>>         <param name="crash-protection" value="false"/>
>>         <param name="mailer-app" value="sendmail"/>
>>         <param name="mailer-app-args" value="-t"/>
>>         <param name="dump-cores" value="yes"/>
>>         <param name="disable-monotonic-timing" value="true"/>
>>         <!--<param name="rtp-start-port" value="16384"/>-->
>>         <!--<param name="rtp-end-port" value="32768"/>-->
>>       </settings>
>>       <!--Any variables defined here will be available in every channel, in
>>     the dialplan etc -->
>>       <variables>
>>         <variable name="uk-ring"
>>     value="%(400,200,400,450);%(400,2200,400,450)"/>
>>         <variable name="us-ring" value="%(2000, 4000, 440.0, 480.0)"/>
>>         <variable name="bong-ring"
>>     value="v=-7;%(100,0,941.0,1477.0);v=-7;>=2;+=.1;%(1400,0,350,440)"/>
>>       </variables>
>>     </configuration>
>>
>>
>>
>>     And I did a "shutdown" and then restarted FS to make the changes active.
>>
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>>
>>
>>
>> -- 
>> Anthony Minessale II
>>
>> FreeSWITCH http://www.freeswitch.org/
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>>
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>>
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>>
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>
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-- 
Yossi Neiman
President
Cartis Solutions, Inc.
P) 630-259-8100
http://www.cartissolutions.com





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