[Asterisk-Users] real-time-clock & asterisk/meetme/ztdummy in 2.6.9 UML

[Steve Kann]

You might have better luck with app_conference (see the wiki) under 
UML..  It is probably a little more tolerant of loose timing and scheduling.

-SteveK


nils toedtmann wrote:

>Hi *,
>
>  [this goes to user-mode-linux-user at lists.sourceforge.net and 
>   asterisk-users at lists.digium.com]
>
>i try to setup an VoIP conferencing server within a UML using asterisk 
>and it's 'MeetMe conference bridge'. I have several UMLs running other 
>services, but my asterisk know-how is poor (as you will see ;-).
>
>
>Question #1: did anybody successfully implement an asterisk 
>             MeetMe-conference inside a 2.6-UML?
>
>
>It needs a special "zaptel timer". As there is no special hardware,
>i have to use a ztdummy/2.6 or zaprtc:
>
>  <http://www.voip-info.org/tiki-index.php?page=Asterisk%20timer>
>
>
>Question #2: is there any chance that either "ztdummy" or "zaprtc"
>             will work inside 2.6-UML?
>
>
>I tried "ztdummy". After frickeling the Makefile, it compiled against
>the UML source tree, it loads within the UML on top of zaptel.ko
>
>  [root at katharina asterisk]# lsmod 
>  Module                  Size  Used by
>  ztdummy                 2628  0 
>  zaptel                227940  1 ztdummy
> 
>(no other modules loaded). Asterisk works (e.g. i can hear the "conf-
>onlyperson" message when i enter the conference room). But the audio 
>of the conference itself is extremly snatchy. That _may_ be a config 
>problem, but a very similar configuration on a non-UML works, and un-
>loading the ztdummy.ko on that system results in the same snatchy 
>audio, so i suspect the ztdummy.ko or some device configuration is 
>broken in my UML.
>
>At the same time, i observe this
>
>  <http://seclists.org/lists/linux-kernel/2004/Oct/8108.html>
>
>problem within my UML, too:
>
>  # tail -f /var/log/messages
>  tail: cannot read realtime clock: Unknown error 516
>
>and tail exits with code 1.
>
>
>Question #3: is there a problem with the RTC in 2.6.9?
>
>
>My host is 2.6.8.1 + skas3-2.6.7-v5 without module support:
>  CONFIG_SMP=y                 (host is a P4 with HT)
>  CONFIG_SCHED_SMT=y
>  CONFIG_HPET_TIMER=y
>  CONFIG_HPET_EMULATE_RTC=y
>  CONFIG_RTC=y
>  CONFIG_PREEMPT=y
>
>My guest is 2.6.9, with module support. Besides the zaptel  
>modules no feature is compiles as a module but static.
>  CONFIG_UML_REAL_TIME_CLOCK=y
>    
>
>Question #4: Shall i try different SMP/HT/RTC settings on
>             host or guest?
>
>
>Regards, /nils.
>
>####################################################
>
>host and guest are FC2. I use the asterisk-1.0 from ATrpms
><http://atrpms.net/dist/fc2/asterisk/> and seft-built
>zaptel-1.0.2 tarball
>
>user-mode-linux: 
>  <http://user-mode-linux.sourceforge.net/>
>  <http://www.user-mode-linux.org/~blaisorblade/>
>
>asterisk: 
>  <http://www.voip-info.org/tiki-index.php?page=Asterisk>
>  <http://asterisk.org/>
>
>meetme:   
>  <http://www.voip-info.org/wiki-Asterisk+cmd+MeetMe>
>
>
>  
>