[Asterisk-Users] Problem with call drops

[Waldo Rubinstein]

I have followed the recommendations. After some further tweaking,  
this is the most I've been able to get:

[root at gateway zaptel-1.2.0]# ./zttest -v
Opened pseudo zap interface, measuring accuracy...

8192 samples in 8190 sample intervals 99.975586%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8190 sample intervals 99.975586%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8190 sample intervals 99.975586%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8190 sample intervals 99.975586%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8190 sample intervals 99.975586%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8190 sample intervals 99.975586%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8190 sample intervals 99.975586%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8190 sample intervals 99.975586%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8190 sample intervals 99.975586%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8190 sample intervals 99.975586%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8190 sample intervals 99.975586%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8190 sample intervals 99.975586%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8192 sample intervals 100.000000%
8192 samples in 8190 sample intervals 99.975586%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8190 sample intervals 99.975586%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8190 sample intervals 99.975586%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8190 sample intervals 99.975586%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8191 sample intervals 99.987793%
8192 samples in 8190 sample intervals 99.975586%
--- Results after 41 passes ---
Best: 100.000000 -- Worst: 99.975586 -- Average: 99.983029

This is on the Asterisk server which has the TE410P board (Xeon  
2.4GHz, 2GB RAM, IDE HD, FC4, Asterisk 1.2.0)

Now, it could just be that this machine is fine. When I run zttest on  
one of the other Asterisk servers, I get:

[root at chivas zaptel-1.2.0]# ./zttest -v
Opened pseudo zap interface, measuring accuracy...

8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8187 sample intervals 99.938965%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8188 sample intervals 99.951172%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8187 sample intervals 99.938965%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8187 sample intervals 99.938965%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8187 sample intervals 99.938965%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8187 sample intervals 99.938965%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8187 sample intervals 99.938965%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8187 sample intervals 99.938965%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8187 sample intervals 99.938965%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8187 sample intervals 99.938965%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8187 sample intervals 99.938965%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8187 sample intervals 99.938965%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8187 sample intervals 99.938965%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8187 sample intervals 99.938965%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8187 sample intervals 99.938965%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8187 sample intervals 99.938965%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8187 sample intervals 99.938965%
8192 samples in 8195 sample intervals 99.963379%
8192 samples in 8187 sample intervals 99.938965%
8192 samples in 8195 sample intervals 99.963379%
--- Results after 43 passes ---
Best: 99.963379 -- Worst: 99.938965 -- Average: 99.953443

This machine has not zapata interface. It's using ztdummy on a Dual  
Xeon 2.4GHz, 2GB RAM, SATA, FC4, Asterisk 1.2.0. Could it be that  
ztdummy is not good enough?

Thanks,
Waldo

On Nov 15, 2005, at 5:38 PM, Mojo with Horan & Company, LLC wrote:

> The zttest results should be 100% ideally, but everything should  
> work ok with >= 99.98%.  here's a great discussion:
>
> http://www.voip-info.org/wiki/view/Asterisk+PCI+bus+Troubleshooting
>
> Maybe try what they recommend with hdparm, specifically unmasking  
> interrupts and setting udma2 mode.  It would appear that your  
> system is just too busy to deal with the many, many interrupts/ 
> second required by the TE410P. (Is it 1,000/sec on these boards too?)
>
> Moj

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